Ryobi Power Hammer HT230 User Guide

OPERATOR’S MANUAL  
ROTARY TOOL KIT  
HT230  
Your rotary tool kit has been engineered and manufactured to our high standard for dependability, ease of operation, and  
operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.  
WARNING: To reduce the risk of injury, the user must read and understand the operator’s manual before using  
this product.  
Thank you for your purchase.  
SAVE THIS MANUAL FOR FUTURE REFERENCE  
 
GENERAL SAFETY RULES  
Avoid accidental starting. Be sure switch is off  
WARNING:  
before plugging in. Carrying tools with your finger on  
the switch or plugging in tools that have the switch on  
invites accidents.  
Read and understand all instructions. Failure to follow  
all instructions listed below, may result in electric shock,  
fire and/or serious personal injury.  
Remove adjusting keys or wrenches before turning  
the tool on. A wrench or a key that is left attached to a  
rotating part of the tool may result in personal injury.  
SAVE THESE INSTRUCTIONS  
WORK AREA  
Do not overreach. Keep proper footing and balance  
at all times. Proper footing and balance enables better  
control of the tool in unexpected situations.  
Use safety equipment. Always wear eye protection.  
Dust mask, nonskid safety shoes, hard hat, or hearing  
protection must be used for appropriate conditions.  
Keep your work area clean and well lit. Cluttered  
benches and dark areas invite accidents.  
Do not operate power tools in explosive atmospheres,  
such as in the presence of flammable liquids, gases, Do not wear loose clothing or jewelry. Contain long  
or dust. Power tools create sparks which may ignite the  
dust or fumes.  
hair. Loose clothes, jewelry, or long hair can be drawn  
into air vents.  
Do not use on a ladder or unstable support. Stable  
footing on a solid surface enables better control of the  
tool in unexpected situations.  
Keep bystanders, children, and visitors away while  
operating a power tool. Distractions can cause you to  
lose control.  
TOOL USE AND CARE  
ELECTRICAL SAFETY  
Use clamps or other practical way to secure and  
support the workpiece to a stable platform. Holding  
the work by hand or against your body is unstable and  
may lead to loss of control.  
Do not force tool. Use the correct tool for your  
application. The correct tool will do the job better and  
safer at the rate for which it is designed.  
Double insulated tools are equipped with a polarized  
plug (one blade is wider than the other). This plug will  
fit in a polarized outlet only one way. If the plug does  
not fit fully in the outlet, reverse the plug. If it still  
does not fit, contact a qualified electrician to install a  
polarized outlet. Do not change the plug in any way.  
Double insulation  
eliminates the need for the three-  
wire grounded power cord and grounded power supply  
system.  
Do not use tool if switch does not turn it on or off. Any  
tool that cannot be controlled with the switch is dangerous  
and must be repaired.  
Disconnect the plug from power source before making  
any adjustments, changing accessories, or storing the  
tool. Such preventive safety measures reduce the risk of  
starting the tool accidentally.  
Store idle tools out of the reach of children and other  
untrained persons. Tools are dangerous in the hands of  
untrained users.  
Maintain tools with care. Keep cutting tools sharp  
and clean. Properly maintained tools with sharp cutting  
edges are less likely to bind and are easier to control.  
Avoid body contact with grounded surfaces such as  
pipes, radiators, ranges, and refrigerators. There is an  
increased risk of electric shock if your body is grounded.  
Don’t expose power tools to rain or wet conditions.  
Water entering a power tool will increase the risk of electric  
shock.  
Do not abuse the cord. Never use the cord to carry the  
tools or pull the plug from an outlet. Keep cord away  
from heat, oil, sharp edges, or moving parts. Replace  
damaged cords immediately. Damaged cords increase  
the risk of electric shock.  
Check for misalignment or binding of moving parts,  
breakage of parts, and any other condition that may  
affect the tool’s operation. If damaged, have the tool  
serviced before using. Many accidents are caused by  
poorly maintained tools.  
When operating a power tool outside, use an outdoor  
extension cord marked “W-A” or “W”. These cords  
are rated for outdoor use and reduce the risk of electric  
shock.  
PERSONAL SAFETY  
Use only accessories that are recommended by the  
manufacturer for your model. Accessories that may be  
suitable for one tool, may become hazardous when used  
on another tool.  
Keep the tool and its handle dry, clean and free from  
oil and grease. Always use a clean cloth when cleaning.  
Never use brake fluids, gasoline, petroleum-based  
products, or any strong solvents to clean your tool.  
Following this rule will reduce the risk of loss of control  
and deterioration of the enclosure plastic.  
Stay alert, watch what you are doing and use common  
sense when operating a power tool. Do not use tool  
while tired or under the influence of drugs, alcohol,  
or medication. A moment of inattention while operating  
power tools may result in serious personal injury.  
Dress properly. Do not wear loose clothing or jewelry.  
Contain long hair. Keep your hair, clothing, and gloves  
away from moving parts. Loose clothes, jewelry, or long  
hair can be caught in moving parts.  
3
 
GENERAL SAFETY RULES  
When servicing a tool, use only identical replacement  
SERVICE  
parts. Follow instructions in the Maintenance section  
of this manual. Use of unauthorized parts or failure to  
follow Maintenance Instructions may create a risk of  
shock or injury.  
Tool service must be performed only by qualified  
repair personnel. Service or maintenance performed by  
unqualified personnel may result in a risk of injury.  
SPECIFIC SAFETY RULES  
Hold tool by insulated gripping surfaces when  
performing an operation where the cutting tool may  
contact hidden wiring or its own cord. Contact with a  
“live” wire will make exposed metal parts of the cutting  
tool “live” and shock the operator.  
heavy enough to carry the current your product will  
draw. A wire gauge size (A.W.G.) of at least 16 is  
recommended for an extension cord 50 feet or less in  
length. Acordexceeding100feetisnotrecommended.  
If in doubt, use the next heavier gauge. The smaller  
the gauge number, the heavier the cord. An undersized  
cord will cause a drop in line voltage resulting in loss of  
power and overheating.  
Accessories must be rated for at least the speed  
recommended on the tool warning label. Wheels and  
other accessories running over rated speed can fly apart  
and cause injury.  
Inspect for and remove all nails from lumber before  
using this tool. Following this rule will reduce the risk of  
serious personal injury.  
Know your power tool. Read operator’s manual  
carefully. Learn its applications and limitations, as well  
as the specific potential hazards related to this tool. Do not operate the flexible shaft with a sharp bend.  
Following this rule will reduce the risk of electric shock,  
fire, or serious injury.  
Over bending the shaft can generate excessive heat on  
the jacket or hand piece. The recommended minimum  
bend radius is 6 in.  
Always wear safety glasses. Everyday eyeglasses  
have only impact-resistant lenses; they are NOT safety After changing bits or making any adjustments, make  
glasses. Following this rule will reduce the risk of serious  
personal injury.  
sure the collet nut and any other adjustment devices  
are securely tightened. A loose adjustment device can  
unexpectedly shift, causing loss of control. Loose rotating  
components will be violently thrown.  
Protect your lungs. Wear a face or dust mask if the  
operation is dusty. Following this rule will reduce the risk  
of serious personal injury.  
Do not reach in the area of the spinning bit. The  
proximity of the spinning bit to your hand may not always  
be obvious.  
Protect your hearing. Wear hearing protection during  
extended periods of operation. Following this rule will  
reduce the risk of serious personal injury.  
Do not grind or sand heat flammable materials. Sparks  
from the wheel could ignite these materials.  
Inspect tool cords periodically and, if damaged, have  
repaired at your nearest Authorized Service Center. This product is not intended for use as a dental drill or  
Constantly stay aware of cord location. Following this  
in human or veterinary medical applications. Serious  
rule will reduce the risk of electric shock or fire.  
injury may result.  
Check damaged parts. Before further use of the When using steel screws, cut-off wheels, high speed  
tool, a guard or other part that is damaged should  
be carefully checked to determine that it will operate  
properly and perform its intended function. Check for  
alignment of moving parts, binding of moving parts,  
breakage of parts, mounting, and any other conditions  
that may affect its operation. A guard or other part that  
is damaged should be properly repaired or replaced  
by an authorized service center. Following this rule will  
reduce the risk of shock, fire, or serious injury.  
cutters, or tungsten carbide cutters, always have  
the work securely clamped. Never attempt to hold  
the work with one hand while using any of these  
accessories.  
Ifthepowersupplycordisdamaged,itmustbereplaced  
only by the manufacturer or by an authorized service  
center to avoid risk.  
Save these instructions. Refer to them frequently and  
use them to instruct others who may use this tool. If you  
loan someone this tool, loan them these instructions  
also.  
Make sure your extension cord is in good condition.  
When using an extension cord, be sure to use one  
4
 
SYMBOLS  
Some of the following symbols may be used on this product . Please study them and learn their meaning. Proper  
interpretation of these symbols will allow you to operate the product better and safer.  
SYMBOL  
NAME  
DESIGNATION/EXPLANATION  
V
Volts  
Voltage  
Current  
A
Hz  
W
Amperes  
Hertz  
Frequency (cycles per second)  
Power  
Watt  
min  
Minutes  
Time  
Alternating Current  
Direct Current  
Type of current  
Type or a characteristic of current  
Rotational speed, at no load  
Double-insulated construction  
Revolutions, strokes, surface speed, orbits etc., per minute  
n
o
No Load Speed  
Class II Construction  
Per Minute  
.../min  
Wet Conditions Alert  
Do not expose to rain or use in damp locations.  
To reduce the risk of injury, user must read and understand  
operator’s manual before using this product.  
Read The Operator’s Manual  
Always wear safety goggles or safety glasses with side shields and,  
as necessary, a full face shield when operating this product.  
Eye Protection  
Safety Alert  
Precautions that involve your safety.  
Failure to keep your hands away from the blade will result in serious  
personal injury.  
No Hands Symbol  
Failure to keep your hands away from the blade will result in serious  
personal injury.  
No Hands Symbol  
No Hands Symbol  
No Hands Symbol  
Failure to keep your hands away from the blade will result in serious  
personal injury.  
Failure to keep your hands away from the blade will result in serious  
personal injury.  
To reduce the risk of injury or damage, avoid contact with any hot  
surface.  
Hot Surface  
5
 
SYMBOLS  
The following signal words and meanings are intended to explain the levels of risk associated with this product.  
SYMBOL  
SIGNAL  
MEANING  
Indicates an imminently hazardous situation, which, if not avoided, will result  
in death or serious injury.  
DANGER:  
Indicates a potentially hazardous situation, which, if not avoided, could result  
in death or serious injury.  
WARNING:  
CAUTION:  
CAUTION:  
Indicates a potentially hazardous situation, which, if not avoided, may result in  
minor or moderate injury.  
(Without Safety Alert Symbol) Indicates a situation that may result in property  
damage.  
SERVICE  
WARNING:  
Servicing requires extreme care and knowledge and should  
be performed only by a qualified service technician. For  
service we suggest you return the product to the nearest  
AUTHORIZED SERVICE CENTER for repair. When  
servicing, use only identical replacement parts.  
To avoid serious personal injury, do not attempt  
to use this product until you read thoroughly and  
understand completely the operator’s manual. If you  
do not understand the warnings and instructions in the  
operator’s manual, do not use this product. Call Ryobi  
customer service for assistance.  
WARNING:  
The operation of any power tool can result in foreign objects being thrown into your eyes, which can  
result in severe eye damage. Before beginning power tool operation, always wear safety goggles or  
safety glasses with side shields and, when needed, a full face shield. We recommend Wide Vision  
Safety Mask for use over eyeglasses or standard safety glasses with side shields. Always use eye  
protection which is marked to comply with ANSI Z87.1.  
SAVE THESE INSTRUCTIONS  
6
 
ELECTRICAL  
DOUBLE INSULATION  
EXTENSION CORDS  
Double insulation is a concept in safety in electric power  
tools, which eliminates the need for the usual three-  
wire grounded power cord. All exposed metal parts are  
isolated from the internal metal motor components with  
protecting insulation. Double insulated tools do not need  
to be grounded.  
When using a power tool at a considerable distance from  
a power source, be sure to use an extension cord that has  
the capacity to handle the current the product will draw. An  
undersized cord will cause a drop in line voltage, resulting in  
overheating and loss of power. Use the chart to determine  
the minimum wire size required in an extension cord. Only  
round jacketed cords listed by Underwriter’s Laboratories  
(UL) should be used.  
WARNING:  
When working outdoors with a product , use an extension  
cord that is designed for outside use. This type of cord is  
designated with “WA” on the cord’s jacket.  
The double insulated system is intended to protect  
the user from shock resulting from a break in the tool’s  
internal insulation. Observe all normal safety precautions  
to avoid electrical shock.  
Before using any extension cord, inspect it for loose or  
exposed wires and cut or worn insulation.  
NOTE:Servicingofaproductwithdoubleinsulationrequires  
extreme care and knowledge of the system and should  
be performed only by a qualified service technician. For  
service, we suggest you return the product to your nearest  
authorized service center for repair. Always use original  
factory replacement parts when servicing.  
**Ampere rating (on product data plate)  
0-2.0  
2.1-3.4 3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0  
Cord Length  
Wire Size (A.W.G.)  
25'  
50'  
16  
16  
16  
16  
16  
16  
16  
16  
14  
16  
14  
12  
14  
14  
10  
14  
12  
ELECTRICAL CONNECTION  
100'  
This product has a precision-built electric motor. It should  
be connected to a power supply that is 120 volts, 60 Hz,  
AC only (normal household current). Do not operate this  
product on direct current (DC). A substantial voltage drop  
will cause a loss of power and the motor will overheat. If  
the product does not operate when plugged into an outlet,  
double-check the power supply.  
**Used on 12 gauge - 20 amp circuit.  
NOTE: AWG = American Wire Gauge  
WARNING:  
Keep the extension cord clear of the working area.  
Position the cord so that it will not get caught on  
lumber, tools, or other obstructions while you are working  
with a power tool. Failure to do so can result in serious  
personal injury.  
WARNING:  
Check extension cords before each use. If damaged  
replace immediately. Never use the product with a  
damaged cord since touching the damaged area could  
cause electrical shock resulting in serious injury.  
7
 
FEATURES  
PRODUCT SPECIFICATIONS  
Collet ........................................................................1/8 in.  
No Load Speed ......................10,000-35,000 r/min. (RPM)  
Input ............................... 120 V, 60 Hz, AC only, 1.2 Amps  
Switch.........................................................Variable Speed  
ON ( I )/OFF ( O )  
SWITCH  
CLEANING  
BRUSH  
TELESCOPING  
TOOL HANGER  
DIGITAL  
DISPLAY  
SPEED CONTROL  
BUTTONS  
SPINDLE  
LOCK  
CLAMP-ON  
BASE  
PLUNGE CUTTING  
ACCESSORY  
FLEX SHAFT  
Fig. 1  
8
 
FEATURES  
KNOW YOUR ROTARY TOOL KIT  
FLEX SHAFT  
A flexible shaft can be connected to the rotary tool for  
working in hard to reach areas and for better control during  
delicate work.  
See Figure 1.  
The safe use of this product requires an understanding of the  
information on the product and in this operator’s manual as  
well as a knowledge of the project you are attempting. Before  
use of this product, familiarize yourself with all operating  
features and safety rules.  
PLUNGE CUTTING ACCESSORY  
The plunge cutting accessory attaches to the end of the  
rotarytool. Depthofcutcanbeadjustedin1/8in. increments  
up to 1 in.  
CLEANING BRUSH  
Usethecleaningbrushtoquicklycleantheworkpiece,rotary  
tool, and accessories.  
SPEED CONTROL BUTTONS  
The speed control buttons allow you to easily select tool  
speed.  
DIGITAL DISPLAY  
The speed of the tool is conveniently shown on the digital  
display.  
TELESCOPING TOOL HANGER  
The telescoping tool hanger provides a convenient place to  
hang the rotary tool while the flex shaft is in use.  
ASSEMBLY  
UNPACKING  
This product has been shipped completely assembled.  
WARNING:  
If any parts are damaged or missing do not operate  
this product until the parts are replaced. Failure to heed  
this warning could result in serious personal injury.  
Carefully remove the product and any accessories from  
the box. Make sure that all items listed in the packing list  
are included.  
Inspect the product carefully to make sure no breakage  
or damage occurred during shipping.  
WARNING:  
Do not discard the packing material until you have carefully  
Do not attempt to modify this product or create  
accessories not recommended for use with this product.  
Any such alteration or modification is misuse and could  
result in a hazardous condition leading to possible serious  
personal injury.  
inspected and satisfactorily operated the product.  
If any parts are damaged or missing, please call  
1-800-525-2579 for assistance.  
PACKING LIST  
Rotary Tool  
Accessories (See Accessory Chart)  
Case  
WARNING:  
Do not connect to power supply until assembly is  
complete. Failure to comply could result in accidental  
starting and possible serious personal injury.  
Locking Key  
Wrench  
Cleaning Brush  
Plunge Cutting Accessory  
Collet (4)  
Telescoping Tool Hanger  
Flex Shaft  
Tool Hanger Clamp-on Base  
Operator’s Manual  
9
 
OPERATION  
WARNING:  
Do not allow familiarity with products to make you  
careless. Remember that a careless fraction of a second is  
sufficient to inflict serious injury.  
WARNING:  
Always wear safety goggles or safety glasses with side  
shields when operating power tools. Failure to do so  
could result in objects being thrown into your eyes  
resulting in possible serious injury.  
ON ( I )/OFF ( O )  
SWITCH  
WARNING:  
Do not use any attachments or accessories not  
recommended by the manufacturer of this product. The  
use of attachments or accessories not recommended  
can result in serious personal injury.  
Fig. 2  
WRENCH  
SPINDLE LOCK  
APPLICATIONS  
You may use this product for the purposes listed below:  
Cutting  
Sanding  
Polishing and buffing  
Engraving  
Drilling  
COLLET  
NUT  
COLLET  
TURNING THE ROTARY TOOL ON/OFF  
See Figure 2.  
To turn the tool ON: push the ON ( I )/OFF ( O ) switch to  
the ON ( I ) position.  
Fig. 3  
To turn the tool OFF: push the ON ( I )/OFF ( O ) switch  
to the OFF ( O ) position.  
With the spindle lock engaged, use the collet wrench to  
CAUTION:  
loosen the collet nut, if necessary.  
Remove the collet nut and old collet using provided collet  
To prevent damage to the spindle or spindle lock, always  
allow motor to come to a complete stop before engaging  
the spindle lock.  
wrench, if necessary.  
Insert the unslotted end of the collet in the hole in the end  
of the tool shaft.  
Replace the collet nut on the shaft.  
CHANGING COLLETS  
See Figure 3.  
WARNING:  
Two 1/8 in. collets, one 1/16 in. collet, and one 3/32 in. collet  
are included with the rotary tool to accommodate different  
shank sizes.  
Always use the collet which matches the shank size of the  
accessory you plan to use. Never force a large diameter  
shank into a collet. The accessory should fit smoothly into  
the collet, but you should be able to tighten the accessory  
firmly and securely with the provided wrench.  
To change the collet:  
Unplug the rotary tool.  
Press and hold the spindle lock, and rotate the shaft by  
hand until the spindle lock engages the shaft, preventing  
further rotation.  
10  
 
OPERATION  
ACCESSORY CHART  
Quantity  
Accessory  
Application  
Ferrous materials: casting, welds, rivets,  
rust  
6
Orange 120-Grit Aluminum Oxide Grinding Wheel Bits  
Green 120-Grit Silicon Carbide Grinding Wheel Bits  
Non-ferrous materials: stone, ceramics,  
porcelain, glass  
4
3
Nylon brush: removing dirt and dust  
Brass and steel brush: removing rust  
Nylon brush: removing dirt and dust  
Brass and steel brush: removing rust  
Attaching sanding drums  
3/4 in. Wire Circle Brushes (nylon, brass, stainless  
steel)  
Wire Cup Brushes ( 3/16 in. nylon, 3/16 in. and 5/8 in.  
brass, 5/8 in. stainless steel)  
4
1
1
1/4 in. Drum Sander Mandrel  
1/2 in. Drum Sander Mandrel  
Attaching sanding drums  
Ferrous materials: removing small burrs  
and scratch marks  
4
Green Rubber Polishing Bits  
36  
1
15/16 in. X 1/64 in. Cut-off Discs  
Polishing Compound Vial  
Cutting ferrous materials  
Polishing  
72  
15/16 in. X 1/32 in. Cut-off Discs  
Cutting ferrous materials  
Ferrous materials: casting, welds, rivets,  
rust  
6
4
1
3/4 in. Pink 220-Grit Aluminum Oxide Grinding Wheels  
1/2 in. Felt Polishing Wheels  
Buffing to a bright finish with polishing  
compound  
Buffing to a bright finish with polishing  
compound  
7/8 in. X 5/32 in. Rubber Emery Wheel  
17  
17  
1/4 in. X 1/2 in. Sanding Drums (60-Grit and 120-Grit)  
1/2 in. X 1/2 in. Sanding Drums (60-Grit and 120-Grit)  
Sanding  
Sanding  
3/4 in. Green 180-Grit Aluminum Oxide Grinding  
Wheels  
Ferrous materials: removing small burrs  
and scratch marks  
6
Bringing shape back to parabolic shaped  
grinding attachments  
1
1
1
Silicon Carbide Dressing Stone  
Cloth Polishing Wheels  
Polishing and buffing  
Cutting marble, concrete, brick, porcelain,  
ceramic, epoxy, and hard woods  
Diamond Cut-off Wheel  
1
1
5
1
1 in. Felt Polishing Wheel  
Felt Polishing Drum  
Polishing and buffing  
Polishing and buffing  
1-1/4 in. Fiberglass Cut-off Wheels  
1/8 in. Screw Mandrel  
Cutting ferrous materials  
Attaching felt attachments  
Mandrels (1/8 in. shank X 1/16 in. and 1/8 in. shank X  
3/32 in.)  
Attaching cut-off discs, cut-off wheels,  
grinding wheels, and emery wheel  
3
1
1-1/4 in. X 3/8 in. 80-Grit Sanding Flap Wheel  
Removing rust and mold  
Drilling  
14  
High Speed Steel Drill Bits (1/16 in., 3/32 in., 1/8 in.)  
Cutting, engraving, carving, and fine  
detailing work  
5
1
Diamond Wheel Points  
Wood, jade, ceramic, glass, hardened  
steel, and semi-precious stones  
1/8 in. Drywall Cutting Bit  
11  
Cutting drywall  
 
OPERATION  
WARNING:  
SPINDLE LOCK  
If you are changing an accessory immediately after  
use, be careful not to touch the collet, collet nut, or the  
accessory with your hands or fingers. You will get burned  
because of the heat buildup from cutting. Always use the  
wrench provided.  
COLLET  
CAUTION:  
To prevent damage to the spindle or spindle lock, always  
allow motor to come to a complete stop before engaging  
the spindle lock.  
COLLET NUT  
Fig. 4  
INSTALLING ACCESSORIES  
See Figures 4 - 5.  
Unplug the rotary tool.  
Press and hold the spindle lock, and rotate the shaft by  
hand until the spindle lock engages the shaft, preventing  
further rotation.  
GRINDING WHEEL  
BITS  
With the spindle lock engaged, use the collet wrench to  
loosen the collet nut, if necessary.  
Insert the shank of the accessory into the collet until the  
shank bottoms out, then pull it out 1/16 in. to allow for  
expansion when the accessory gets hot.  
With the spindle lock engaged, tighten the collet nut with  
the provided wrench until the accessory shank is gripped  
by the collet. Avoid excess tightening of the collet nut.  
REMOVING ACCESSORIES  
See Figures 4 - 5.  
Unplug the rotary tool.  
With the spindle lock engaged, loosen the collet nut with  
RUBBER  
POLISHING BITS  
the provided wrench.  
Remove the accessory.  
SANDING FLAP  
WHEEL  
WIRE BRUSHES  
Fig. 5  
12  
 
OPERATION  
CAUTION:  
MANDREL SCREW  
CUT-OFF DISC  
WASHER  
To prevent damage to the spindle or spindle lock, always  
allow motor to come to a complete stop before engaging  
the spindle lock.  
MANDREL  
COLLAR  
USING THE MANDRELS  
See Figures 6 - 8.  
Three types of mandrels have been included for use with  
this kit. The standard mandrel is used with the cut-off discs,  
grindingwheels,emerywheel,andcut-offwheels.Thescrew  
mandrelisusedwiththepolishingwheelsandpolishingdrum.  
The drum mandrel is used with the sanding drums.  
To install:  
Unplug the rotary tool.  
Install the mandrel.  
COLLET  
If using the standard mandrel:  
Press and hold the spindle lock.  
Fig. 6  
Insert the slot end of the provided wrench into the slot  
TIGHTEN  
on top of the mandrel and unscrew.  
SPINDLE LOCK  
Remove mandrel screw and washer.  
Place desired accessory over mandrel shaft and align  
accessory hole with mandrel hole.  
Insert mandrel screw with washer through the accessory  
and mandrel shaft holes.  
NOTE: The mandrel washer should be placed between  
the mandrel screw and the accessory.  
Tighten using provided wrench.  
If using the screw mandrel:  
Align desired accessory hole with mandrel screw head.  
Screw accessory onto mandrel by twisting clockwise until  
secure.  
If using the drum mandrel:  
Align appropriate sized sanding drum over mandrel and  
push down to completely cover drum end of mandrel.  
Fig. 7  
NOTE: If necessary, tighten the screw on the drum  
mandrel head to expand the drum and securely hold the  
sanding drum in place.  
13  
 
OPERATION  
BALANCING ACCESSORIES  
For precision work, it is important that all accessories be  
properly balanced. To balance an accessory, slightly loosen  
the collet nut and give the accessory or collet a 1/4 in. turn.  
Youshouldbeabletotellbythesoundandfeeliftheaccessory  
is running in balance. Continue adjusting in this fashion until  
the best balance is achieved. Replace accessories if they  
become damaged or unbalanced.  
FIBERGLASS  
CUT-OFF WHEEL  
SELECTING THE RIGHT SPEED  
See Figure 9.  
The rotary tool has a speed range of 10,000 to 35,000 RPM.  
To select the right speed for each job, use a practice piece of  
material. Vary speed to find the best speed for the accessory  
you are using and the job to be done.  
DIAMOND  
CUT-OFF WHEEL  
The digital display shows the speed setting of the tool using  
the numbers 10-35. Press the + speed control button to  
increase the speed, and press the speed control button  
to decrease the speed. Speed settings are approximately  
one thousandth of the RPM. For example, a speed setting  
of 10 is approximately 10,000 RPM, and a speed setting of  
35 is approximately 35,000 RPM.  
RefertotheSpeedDialSettingstabletodeterminetheproper  
speed, based on the material being worked and the type of  
accessory being used.  
SLOWER SPEEDS  
Certain materials, some plastics for example, require a  
relativelyslowspeedbecausethefrictionofthetoolgenerates  
heat and causes the plastic to melt at high speed.  
SANDING DRUMS  
Fig. 8  
Slow speeds (15,000 RPM or less) are usually best for  
polishing operations using the polishing accessories. They  
may also be best for working on delicate projects, delicate  
wood carving and fragile model parts.  
WARNING:  
Wire brushes must never be operated at speeds higher  
than 15,000 RPM. Wire brushes must run at least one  
minute before use. During this period, no one should  
stand in front of or in line with the rotating brush. Failure  
to heed this warning could result in serious personal  
injury.  
DIGITAL  
DISPLAY  
Higher speeds are better for carving, cutting, and shaping  
wood.  
Hardwoods, metals, andglassrequirehighspeedoperation.  
Drilling should also be done at high speeds.  
SPEED CONTROL  
BUTTONS  
Fig. 9  
14  
 
OPERATION  
To determine the optimum operational speed for different  
NOTE:  
materials and accessories, refer to the Speed Dial Settings  
table. Look this table over and become familiar with it.  
Plastic and materials that melt at low temperatures should  
be cut at low speeds.  
The best way to determine the correct speed for work on  
any material is to practice for a few minutes on a piece of  
scrap, even after referring to the table. You can quickly  
learn that a slower or faster speed is more effective just by  
observing what happens when you make a pass or two at  
different speeds.  
Soft wood should be cut at high speed.  
Aluminum, tin, and copper, lead, and zinc alloys may be  
cut at any speed, depending on the type of cutting being  
done. Use paraffin or other suitable lubricant on the cutter  
to prevent the cut material from adhering to the cutter  
teeth.  
When working with a scrap piece of plastic, start at a slow  
rate of speed and increase the speed until you observe  
whether the plastic is melting at the point of contact; reduce  
the speed slightly to get optimum working speed without  
melting the workpiece.  
WARNING:  
Wire brushes must never be operated at speeds higher  
than 15,000 RPM. Wire brushes must run at least one  
minute before use. During this period, no one should  
stand in front of or in line with the rotating brush. Failure  
to heed this warning could result in serious personal  
injury.  
SPEED DIAL SETTINGS  
Type of  
Accessory  
Soft  
Wood  
Hard  
Wood  
Laminates  
Aluminum,  
Shell/  
Stone  
Steel  
10-18  
25-30  
Ceramic  
Glass  
Plastics  
Brass, Etc.  
Cut-off  
Discs  
25-30  
25-30  
18-30  
25-30  
10-18  
10-30  
Engraving  
Cutter  
15-25  
10-18  
10-15  
Rubber  
Polishing  
Points  
10-15  
Aluminum  
Oxide  
Grinding  
Stones  
10-15  
10-18  
10-18  
Silicon  
Carbide  
Grinding  
Stone  
10-15  
10-15  
10-15  
10-15  
12-15  
10-15  
Wire  
Wheels  
10-15  
10-15  
10-15  
15  
 
OPERATION  
OPERATING THE ROTARY TOOL  
See Figure 10.  
Learning to use the rotary tool:  
Hold the tool in your hand and get used to its weight,  
balance, and the taper of the housing. This taper permits  
the tool to be grasped like a pencil.  
PENCIL HOLDING  
METHOD  
Examine the rotary tool accessories carefully. Damaged  
accessories can fly apart as they come up to speed and  
should not be used. The use of damaged accessories  
can result in serious personal injury.  
Practice on scrap materials first to see how the tool  
operates. Keep in mind that the work is done by the speed  
of the tool and by the accessory in the collet. You should  
not lean on or push the tool into the work.  
It is best to make a series of passes with the tool rather than  
attempt to do all the work in one pass. To make a cut, pass  
the tool back and forth over the work like you would a small  
paint brush. Cut a little material on each pass until you reach  
the desired depth. For most work, a gentle touch is best;  
you will have greater control, make fewer errors, and get the  
most efficient work out of the accessory.  
Fig. 10  
For the best control in close work, grip the tool like a pencil  
between your thumb and forefinger.  
Ahandgripmethodofholdingthetoolisusedforoperations  
such as grinding a flat surface or using cut-off discs.  
To operate the rotary tool:  
Secure all work in a vise or clamp to a workbench to  
prevent it from moving under the tool.  
Hold the tool in front and away from you, keeping the tool  
accessory clear of the workpiece.  
Turn on the tool and let the motor and accessory build  
up to full speed.  
Lower the tool gradually until the accessory contacts the  
workpiece.  
Move the tool continuously at a steady, consistent  
pace.  
Use just enough pressure to keep the tool from chattering  
or bouncing.  
NOTE: Heavy pressure will decrease the tool’s speed and  
put a strain on the motor. The weight of the tool alone is  
adequate for most jobs.  
Lift the tool away from the workpiece before turning off  
the tool.  
16  
 
OPERATION  
TELESCOPING TOOL HANGER WITH CLAMP  
ON BASE  
See Figure 11.  
TOOL HANGER  
HOOK  
ROTARY TOOL  
HOOK  
The telescoping tool hanger provides a convenient place to  
hang the rotary tool while the flex shaft is in use.  
To clamp the base to a worktable:  
Turn the clamp screw counterclockwise to open the  
clamping area.  
Place clamp over edge of worktable.  
Turn the clamp screw clockwise until the clamp is  
secure.  
TOOL HANGER  
To attach the tool hanger to the base:  
FLEX SHAFT  
Turn the lower part of the tool hanger clockwise to  
unlock.  
Pull the tool hanger up to lengthen or push the tool hanger  
down to shorten its height.  
Turn the lower part of the tool hanger counterclockwise  
to lock into place.  
Screw the tool hanger into the top of the clamp.  
NOTE: When using the flex shaft, hang the rotary tool from  
the tool hanger hook using the hook located on the back of  
the rotary tool.  
CLAMP-ON BASE  
CLAMP SCREW  
CAUTION:  
Fig. 11  
To prevent damage to the spindle or spindle lock, always  
allow motor to come to a complete stop before engaging  
the spindle lock.  
COLLET SLEEVE  
DRIVE  
SHAFT  
COLLAR  
1/8 in.  
COLLET  
OPERATING THE FLEX SHAFT  
See Figures 12 - 14.  
The 1/8 in. collet must be inserted into the rotary tool before  
the flex shaft can be installed.  
To install the flex shaft:  
Unplug the rotary tool.  
ROTARY  
TOOL HEAD  
COLLET  
NUT  
Loosen collet sleeve by turning counterclockwise and  
remove.  
CUP END OF  
FLEX SHAFT  
Press and hold the spindle lock, and rotate the shaft by  
hand until the spindle lock engages the shaft, preventing  
further rotation.  
Fig. 12  
Insert drive shaft into collet nut until the collar meets the  
With the spindle lock engaged, use the collet wrench to  
collet nut.  
loosen the collet nut, if necessary.  
Tighten the collet nut completely, keeping collar in contact  
Remove collet nut and collet.  
Insert the 1/8 in. collet.  
with collet nut.  
Insert cup end of flex shaft onto rotary tool head. Turn  
Replace the collet nut and tighten loosely.  
clockwise to tighten.  
17  
 
OPERATION  
To install accessories into the flex shaft:  
Unplug the rotary tool.  
LOCKING KEY  
HOLE  
Locate the hole behind the collet nut in the flex shaft  
COLLET  
NUT  
body.  
Turn the collet nut until the hole in the flex shaft body  
aligns with the hole visible inside the flex shaft.  
Insert provided locking key into the aligned holes to lock  
collet nut into place.  
Insert the shank of the accessory into the collet nut until  
the shank bottoms out, then pull it out 1/16 in. to allow  
for expansion when the accessory gets hot.  
WRENCH  
With the key still in place, tighten the collet nut with the  
provided wrench until the accessory shank is gripped by  
the collet. Avoid excess tightening of the collet nut.  
Fig. 13  
Remove the key.  
To remove accessories from the flex shaft:  
Unplug the rotary tool.  
GROOVED  
GRIPPING SECTION  
Locate hole behind the collet nut in the flex shaft body.  
Turn collet nut until the hole in the flex shaft body aligns  
with the hole visible inside the flex shaft.  
Insert provided locking key into the aligned holes to lock  
collet nut into place.  
With the hex still in place, loosen the collet nut with the  
provided wrench.  
Remove the accessory.  
To operate the rotary tool using the flex shaft:  
Secure all work in a vise or clamp to a workbench to  
prevent it from moving under the tool.  
Grip the flex shaft along the grooved gripping section.  
Hold the tool in front and away from you, keeping the tool  
accessory clear of the workpiece.  
Turn on the tool and let the motor and accessory build  
Fig. 14  
up to full speed.  
Lower the tool gradually until the accessory contacts the  
workpiece.  
Move the tool continuously at a steady, consistent  
pace.  
Use just enough pressure to keep the tool from chattering  
or bouncing.  
NOTE: Heavy pressure will decrease the tool’s speed and  
put a strain on the motor. The weight of the tool alone is  
adequate for most jobs.  
Lift the tool away from the workpiece before turning off  
the tool.  
18  
 
OPERATION  
USING THE PLUNGE CUTTING ACCESSORY  
See Figures 15 - 16.  
The plunge cutting accessory attaches to the end of the  
rotarytool. Depthofcutcanbeadjustedin1/8in. increments  
up to 1 in.  
COLLET  
SLEEVE  
To assemble the plunge cutting accessory:  
Hold the cup-shaped accessory piece with the cup side  
facing down.  
Insert the cylinder-shaped accessory piece up through  
the cup-shaped piece. The legs of the cylinder-shaped  
piece should be facing down.  
CYLINDER  
PIECE  
GROOVE  
SCREW  
Align the groove in the cylinder-shaped piece with the  
screw in the cup-shaped piece.  
CUP  
Tighten the screw to secure the cylinder-shaped piece in  
PIECE  
place.  
To install the plunge cutting accessory on the rotary  
tool:  
Fig. 15  
Unplug the rotary tool.  
Install desired drill bit into rotary tool.  
Loosen collet sleeve by turning counterclockwise and  
remove.  
SCALE  
Insert rotary tool into cylinder-shaped piece of the  
accessory.  
SCREW  
Turn accessory clockwise until it is securely screwed onto  
the rotary tool.  
To use the plunge cutting accessory:  
Loosen the plunge cutting accessory screw until the  
cup-shaped piece can be easily moved.  
Align cup-shaped piece with the desired measurement  
depth on the accessory scale.  
Tighten screw until the accessory is secured.  
Connect rotary tool to power supply.  
Hold the tool in front and away from you, keeping the tool  
bit clear of the workpiece.  
Turn on the tool and let the motor and bit build up to full  
speed.  
Fig. 16  
Lower the tool gradually until the bit contacts the  
workpiece.  
Move the tool continuously at a steady, consistent  
pace.  
NOTE: The bit has reached the desired depth when  
the plunge cutting accessory makes contact with the  
workpiece.  
Use just enough pressure to keep the tool from chattering  
or bouncing.  
NOTE: Heavy pressure will decrease the tool’s speed and  
put a strain on the motor. Normally the weight of the tool  
alone is adequate for most jobs.  
Lift the tool away from the workpiece before turning off  
the tool.  
19  
 
MAINTENANCE  
Electrictoolsusedonfiberglassmaterial,wallboard,spackling  
WARNING:  
compounds, or plaster are subject to accelerated wear and  
possible premature failure because the fiberglass chips  
and grindings are highly abrasive to bearings, brushes,  
commutators, etc. Consequently, we do not recommended  
using this product for extended work on these types  
of materials. However, if you do work with any of these  
materials, it is extremely important to clean the product  
using compressed air.  
When servicing, use only identical replacement parts.  
Use of any other parts may create a hazard or cause  
product damage.  
WARNING:  
Always wear safety goggles or safety glasses with side  
shields during power tool operation or when blowing  
dust. If operation is dusty, also wear a dust mask.  
LUBRICATION  
All of the bearings in this product are lubricated with a  
sufficient amount of high grade lubricant for the life of the  
unitundernormaloperatingconditions.Therefore,nofurther  
lubrication is required.  
GENERAL MAINTENANCE  
Avoid using solvents when cleaning plastic parts. Most  
plastics are susceptible to damage from various types of  
commercial solvents and may be damaged by their use. Use  
clean cloths to remove dirt, dust, oil, grease, etc.  
WARNING:  
Do not at any time let brake fluids, gasoline, petroleum-  
based products, penetrating oils, etc., come in contact  
with plastic parts. Chemicals can damage, weaken or  
destroy plastic which may result in serious personal  
injury.  
20  
 
NOTES  
21  
 
OPERATOR’S MANUAL  
ROTARY TOOL KIT  
HT230  
WARNING:  
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains  
chemicals known to cause cancer, birth defects or other reproductive harm. Some examples of these  
chemicals are:  
•lead from lead-based paints,  
•crystalline silica from bricks and cement and other masonry products, and  
•arsenic and chromium from chemically-treated lumber.  
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your  
exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment,  
such as those dust masks that are specially designed to filter out microscopic particles.  
• SERVICE  
Now that you have purchased your product, should a need ever exist for repair parts  
or service, simply contact your nearest Authorized Service Center. Be sure to provide  
all pertinent facts when you call or visit. Please call 1-800-525-2579 for your nearest  
complete list of Authorized Service Centers.  
• MODEL NO. AND SERIAL NO.  
The model number of this product will be found on a plate attached to the motor housing.  
Please record the model number and serial number in the space provided below.  
• HOW TO ORDER REPAIR PARTS  
When ordering repair parts, always give the following information:  
HT230  
• MODEL NUMBER  
• SERIAL NUMBER  
Ryobi® is a registered trademark of Ryobi Limited used under license.  
ONE WORLD TECHNOLOGIES, INC.  
1428 Pearman Dairy Road, Anderson, SC 29625  
Phone 1-800-525-2579  
987000-010  
9-15-06 (REV:01)  
 

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