Ryobi CRT150K Operation manual

OWNER'S OPERATING MANUAL
100 WATT ROTARY HOBBY TOOL
MODEL CRT150K
SPECIFICATIONS:
Power Input............................100 watts
No Load Speed......................7500-26,500 rpm
Collet Chuck ..........................3.0mm
Weight ....................................0.5kg (tool only)
THANK YOU FOR BUYING A RYOBI ROTARY HOBBY TOOL
Your new rotary hobby tool has been engineered and manufactured to Ryobi's high standard
for dependability, ease of operation, and operator safety. Properly cared for, it will give
you years of rugged, trouble free performance.
CAUTION: Carefully read through this entire owner's manual before using
your rotary hobby tool.
Pay close attention to the Rules for Safe Operation, Warnings, and Cautions.
If you use your rotary hobby tool properly and only for what it is intended, you will enjoy years
of safe, reliable service.
Thank You again for buying Ryobi tools.
SAVE THIS MANUAL FOR FUTURE REFERENCE.
DOUBLE
INSULATED
IMPORTANT NOTICE:
This HOBBY TOOL is designed for light consumer use. It is NOT designed for trade or
industrial use and is not covered by warranty for use in these applications.

RULES FOR SAFE OPERATION
The purpose of safety rules is to attract your
attention to possible dangers. The safety symbols
and the explanations with them, require your care-
ful attention and understanding.
The safety warnings do not by themselves
eliminate any danger. The instruction or warnings
they give are not substitutes for proper accident pre-
vention measures.
SAFETY ALERT SYMBOL.
Indicates caution or warning. May be
used in conjunction with other sym-
bols or pictures.
WARNING: Failure to obey a safety warning can
result in serious injury to yourself or to others.
Always follow the safety precautions to reduce the
risk of fire, electric shock and personal injury.
DOUBLE INSULATION
Double insulation is a concept in safety in electric
power tools, which eliminates the need for earth
grounding. Whenever there is electric current in
the tool there are two complete sets of insulation
to protect the user. All exposed metal parts are
isolated from the internal metal motor compo-
nents with protecting insulation.
WARNING: The double insulated system is intended
to protect the user from shock resulting from a break
in the tools internal wiring. Observe all normal safety
precautions related to avoiding electrical shock.
IMPORTANT: Servicing of a tool with double insulation
requires extreme care and knowledge of the system
and should be performed only by a qualified service
technician. For service we suggest you return the tool
to your nearest Ryobi Authorised Service Centre for
repair. When servicing, use only identical Ryobi
replacement parts.
WARNING: Do not attempt to operate this tool
until you have read thoroughly and understood
completely, safety rules, etc. contained in this man-
ual. Failure to comply can result in accidents involv-
ing fire, electric shock or serious personal injury.
Save owners manual and review frequently for con-
tinuing safe operation and instructing others who
may use this tool.
The operation of any tool can result
in foreign objects being thrown into
your eyes, which can result in
severe eye damage. Before begin-
ning power tool operation, always wear safety
goggles or safety glasses with side shields and a
full face shield when needed. We recommend
Wide Vision Safety Mask for use over eyeglass-
es or standard safety glasses with side shields.
1. KNOW YOUR POWER TOOL. Read owners
manual carefully. Learn its applications and limi-
tations as well as the specific potential hazards
related to this tool.
2. GUARD AGAINST ELECTRICAL SHOCK BY
PREVENTING BODY CONTACT WITH
GROUNDED SURFACES. For example, pipes,
radiators, ranges, refrigerator enclosures.
3. KEEP WORK AREA CLEAN. Cluttered areas and
benches invite accidents.
4. AVOID DANGEROUS ENVIRONMENT. Don't
use power tools in damp or wet locations or
expose to rain. Keep work area well lit.
5. KEEP CHILDREN AND VISITORS AWAY. Visitors
should wear safety glasses and be kept a safe dis-
tance from work area. Do not let visitors contact
tool or extension cord.
6. STORE IDLE TOOLS. When not in use, tools
should be stored in a dry and high or locked-up
place, out of reach of children.
7. DON'T FORCE TOOL. It will do the job better
and safer at the rate at which it was designed.
8. USE RIGHT TOOL. Don't force small tool or
attachment to do the job of a heavy duty tool.
Don't use tool for purpose not intended.
9. DRESS PROPERLY. Do not wear loose clothing
or jewellery. They can be caught in moving parts.
Rubber gloves and non-skid footwear are rec-
ommended when working outdoors. Also wear
protective hair covering to contain long hair.
10. ALWAYS WEAR SAFETY GLASSES. Everyday
eyeglasses have only impact resistant lenses,
they are not safety glasses.
11. PROTECT YOUR LUNGS. Wear a dust mask if
operation is dusty.
12. PROTECT YOUR HEARING. Wear hearing pro-
tection during extended periods of operation.
13. DON'T OVERREACH. Keep proper footing and
balance at all times. Do not use tool on a ladder
or unstable support. Secure tools when working
at elevated levels.
14. MAINTAIN TOOLS WITH CARE. Keep tools
sharp and clean for better and safer perfor-
mance. Follow instructions for lubricating and
changing accessories.
15. DISCONNECT TOOLS. When not in use,
before servicing, or when changing attach-
ments, blades, bits, cutters, etc. all tools
should be disconnected.
16. REMOVE ADJUSTING KEYS AND WRENCHES.
Form a habit of checking to see that keys and
adjusting wrenches are removed from tool
before turning it on.
Page 2

17. NEVER USE IN AN EXPLOSIVE
ATMOSPHERE. Normal sparking of the motor
could ignite fumes.
18. KEEP HANDLES 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.
19. STAY ALERT AND EXERCISE CONTROL.
Watch what you are doing and use common
sense. Do not operate tool when you are tired.
Do not rush.
20. CHECK DAMAGED PARTS. Before further use
of the tool, a guard or any other part that is
damaged should be carefully checked to deter-
mine 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 con-
ditions that may affect its operation. A guard or
any other part that is damaged should be prop-
erly repaired or replaced by an authorised ser-
vice centre.
21. DO NOT USE TOOL IF SWITCH DOES NOT
TURN IT ON AND OFF. Have defective switch-
es replaced by authorised service centre.
22. DO NOT OPERATE THIS TOOL WHILE
UNDER THE INFLUENCE OF DRUGS, ALCO-
HOL OR ANY MEDICATION.
23. SUPPLY CORD. If the supply cord is damaged,
it must be replaced by the manufacturer or its
service agent or similarly qualified person in
order to avoid a hazard.
SAVE THESE INSTRUCTIONS
Spindle Lock
Button
Collet Nut
Variable Speed
Switch (1 - 6)
Page 3
Precise DrillingSharpen ToolsShaping Wood
GrindingDeburr MetalCutting Metal
Driver Cap
On/Off Switch

INSTALLING ACCESSORIES
WARNING:
Your Hobby Tool should never be connected to the
power source when you are assembling parts,
making adjustments, assembling or replacing
accessories, cleaning, or when not in use.
Disconnecting the Hobby Tool will prevent acciden-
tal starting that could cause serious personal injury.
1. Unplug your Hobby Tool.
WARNING:
Failure to unplug your Hobby Tool could result in
accidental starting, causing serious personal injury.
2. To loosen, press the lock button, and rotate the
shaft by hand until the shaft lock engages the
shaft, preventing further rotation. (Fig 1)
WARNING:
Do not engage the lock while the Hobby Tool is
running.
3. With the shaft lock engaged, use the collet
wrench to loosen the collet nut, if necessary.
4. Insert the shank of the cutter into the bottom of
the collet, then pull it out 1.6mm to allow for
expansion when the accessory gets hot.
5. With the lock button engaged, tighten the collet
nut with the wrench until the accessory shank
is gripped by the collet. Avoid excess tightening
of the collet nut. (Fig 2)
WARNING:
Before connecting your Hobby Tool to the power
sorce make sure switch is in "OFF" position. Failure
to do so could result in accidental starting resulting
in serious personal injury.
■COLLET CHANGES
To install a new collet, remove the collet nut and
remove the old collet. Insert the collet in the hole.
Replace the collet nut on the shaft. 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 wrench provided.
■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 6mm turn. You should be
able to tell by the sound and feel if your accessory
is running in balance. Continue adjusting in this
fashion until the best balance is achieved. Replace
accessories which become damaged or
unbalanced. USE ONLY RECOMMENDED ACCES-
SORIES.
WARNING:
Do not use grinding wheels over 25mm in diameter.
The Hobby Tool's high speed can cause larger
wheels to fall apart causing serious injury.
■USING THE HOBBY TOOL
WARNING:
Be careful not to let your hands cover the air vents.
(Fig 4).
The first step in learning to use the Hobby Tool is to
get the "feel" of it. Hold it in your hand and feel its
weight and balance. Feel the taper of the housing.
Collet Nut 3.2mm or 2.4mm Collet
Air Vents
OPERATION
Fig 1
Fig 3
Fig 4
Fig 2

OPERATION (Cont.)
This taper permits the Hobby Tool to be grasped
much like a pen or pencil.
When you turn on the tool, hold it away from your
face. Examine your 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.
When applicable, clamp or otherwise secure the
work to prevent it from moving under your rotary
tool.
WARNING:
Always make certain that the area where you are
going to use the Hobby Tool is free of nails or any
other obstructions.
Practice on scrap materials first to see how the
Hobby 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
in to the work.
Lower the spinning accessory lightly to the work and
allow it to touch the point at which you want cutting,
sanding, etc to begin. Concentrate on guiding the
tool over the work, using very little pressure from
your hand allow the accessory to do the work.
It is best to make a series of passes with the tool
rather than attempt to do all of 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, the deft, gentle
touch is best. You will have the best control, be
less likely to make errors, and get the most
efficient work out of the accessory.
For best control in close work, grip the Hobby Tool
like a pencil between your thumb and forefinger.
(Fig 5)
A "handgrip" method of holding the tool is used for
operations such as grinding a flat surface or using
cut-off discs. (Fig 6)
WARNING:
When using the engraving cutter, cut-off discs and
sanding discs, always have the work securely
clamped. Never attempt to hold the work with one
hand while using any of the accessories. The discs
could grab if they become slightly angled in the
groove, and kickback can result, which means loss
of control. Your second hand should be used to
steady and guide the hand holding the tool.
Set the speed dial to fit the job; to achieve the best
results when working with differnt material, the
speed of the Hobby Tool should be regulated.
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.
Your Hobby Tool is a variable speed model. The
speed dial has the numbers 1 through 6 to indicate
the speed of the tool. Turn the dial to selct the
desired operating speed from 5000 -23000/min.
Refer to the table in this section to determine the
proper speed, based on the material being worked
and the type of cutter or other accessory being
used. This table will enable you to select both the
correct accessory and the optimum speed at a
glance.
■NEED OF SLOWER SPEEDS
Certain materials, such as some plastics for exam-
ple, require a relatively slow speed because the
friction of the high speed.
Slow speeds (15000r.p.m. or less) usually are the
best for polishing operations employing the polish-
ing accessories. They may also be the best for
working on delicate projects, delicate wood carving
and fragile model parts. You should always do pol-
ishing with wire brush accessories at slower
speeds and never higher than 15000r.p.m.
Higher speeds are better for carving, cutting and
shaping wood.
Hardwoods, metals and glass require high speed
operation. Drilling shouls also be done at high
speed.
Gripping the
Hobby Tool
like a pen.
Fig 5
Handgrip
method of
holding the
Hobby Tool.
Fig 6
OPERATING SPEEDS
& ACCESSORIES

OPERATING SPEEDS
& ACCESSORIES (Cont.)
The speed of the Hobby Tool is controlled by
adjusting the variable speed dial (Fig 7). The refer-
ence speed range is as the chart below.
Variable Speed Speed Range
Dial Setting (Reference Value)
1 7500 - 8000 r.p.m
2 8000 - 12000 r.p.m
3 12000 - 15000 r.p.m
4 15000 - 18000 r.p.m
5 18000 - 21000 r.p.m
6 21000 - 26500 r.p.m
■GENERAL
Avoid using solvents when cleaning plastic parts.
Most plastics are susceptible to various types of
commercial solvents and may be damaged by their
use. Use clean cloths to remove dirt, dust, etc.
Do not use electric tools on fibrglass and other
abrasive materials as the abrasive material tends to
cause accelerated wear and possible premature
failure of bearings, brushes, commutator and other
parts. Consequently, this tool should not be used
for work on fibreglass or other abrasive materials.
■LUBRICATION
All of the bearings in this tool are lubricated with a
sufficient amount of high grade lubricant for the life
of the unit under normal operating conditions.
Therefore, no further lubrication is required.
WARNING:
Do not at ant time let brake fluids, gasoline,
petroleum based products, penetrating oils, etc
come into contact with plastic parts. They contain
chemicals that can damage, weaken or even
destroy plastic.
■OPTIONAL ACCESSORY
A flexible drive shaft is available as an optional
accessory. It is ideal for hard to reach and confined
areas. Part No. 6200892004.
■ATTACHING THE OPTIONAL FLEXIBLE SHAFT
TO HOBBY TOOL
1. To attach the flexible shaft to the Hobby Tool
remove the housing cap from the tool as shown in
figure 8. Then press the shaft lock button and rotate
the collet nut by hand until the shaft lock engages.
Unscrew collet nut and remove the collet.
2. Insert driver cable into collet (Fig.9) and secure
by tightening collet (fig.10). Slide driver cap over
collet and screw on to motor housing.
4. Insert the collet which is suitable for the shank
size you need and the collet nut to another end
of the flexible shaft. To change bits use the
wrench and bit.
5. Do not use the flexible shaft over 30000 rpm.
■INSTALLING CUT-OFF WHEEL (A)
1. Loosen the screw in a anti-clockwise direction.
2. Put the cutting wheel on mandrel.
3. Tighten the screw in a clockwise direction with
wrench.
■INSTALLING SANDER ROLLER (B)
1. Loosen the nut of sanding band.
2. Put the sanding roller on.
3. Tighten the nut in a clockwise direction.
■INSTALLING POLISH WHEEL (C)
Screw the mandrel into the polish wheel.
Variable
Speed Switch
(1 - 6)
Fig 7
Fig 8 Fig 9
Fig 10
A B C
Screw
Cap Collet Driver Cap
Fig 11

ACCESSORY KIT
DRAWING QUANTITY DESCRIPTION SPECIFICATION APPLICABLE FUNCTION
REVOLUTION
30 Cut-Off Wheel ø15/16" x 1/32",#120 4 - 6 Slice & cut off metal,
20 ø15/16" x 3/64",#120 screw head, wire
1 Aluminium oxide ø3/8" x 1/2", #60 2 - 5 Clean small bits,
grinding clean rust, grind
edge, sharp axe,
maintain shape.
1 Aluminium oxide ø5/8" x 3/8", #60 2 - 5 Clean small bits,
grinding clean rust, grind
edge, sharp axe,
maintain shape.
1 Aluminium oxide ø3/8" x 23/32", #60 2 - 5 Clean small bits,
grinding clean rust, grind
edge, sharp axe,
maintain shape.
1 Silicon Carbide ø25/32" x 5/32", #60 1 - 3 Clean small bits,
grinding clean rust, grind
edge, sharp axe,
maintain shape.
1 Silicon Carbide ø5/8" x 5/32", #60 1 - 5 Clean small bits,
grinding clean rust, grind
edge, sharp axe,
maintain shape.
1 Sanding Bands ø1/2" x 2-1/16" - Fix sanding roller.
6 Sanding Roller ø19/32" x 1/2" #80 2 - 3 Clean rust, sanding,
ø19/32" x 1/2" #120 maintain shape.
10 Sanding Discs ø3/4", #240 1 - 4 Clean rust, sanding,
maintain shape.
4 Felt ø1 x 15/64" 1 - 3 Polish all metals
6 ø1/2 x 9/32"
1 Mandrel ø3/16 x 1-27/64" - Fix Cut-Off Wheel
(Cut-Off Wheel)
1 Mandrel ø1/4 x 1-1/2" - Fix Felt
(Felt)
1 H.S.S. Drill Bit 3/8" 1 - 5 Drill metal, wood,
aluminium
1 Cutter Bit ø1/4" x 15/64" 1 - 5
1 Cutter Bit ø15/64" x 3/8" 1 - 5
1 Cutter Bit ø1/4" x 3/8" 1 - 5
10 Engraving ø3/32 x 3/8" ø3/32 x 3/8" 1 - 6 Fine detail work, cut
Cutters ø1/8 x 13/64" ø3/32 x 19/64" ting, engraving, carv
ø5/32 x 17/64" ø19/32 x 9/8" ing,touch-up & finish.
ø1/8 x 16/64" ø6/64 x 5/64"
ø1/8 x 19/64" ø5/32 x 1/8"
1 Dressing Stone 1" x 23/64" - Renew original shape
of all wheel points
and grinding wheel.
1 Collet 3/32" -
Carving, shaping,
grooving, & hollowing
most woods, soft
metals & plastics.
WARNING: Do not run accessories in excess of 35,000 r.p.m.
ADVICE: Users can adjust the switch to an ideal speed for every application. But, the speed must not
exceed the rated r.p.m. of accessories.

RYOBI
HOME USE WARRANTY
12 Months Home Use Warranty
Subject to the warranty conditions below, this RYOBI
tool, (hereinafter called "the product"), is warranted for
home use only by Ryobi Australia Pty. Ltd. (hereinafter
called "The Company") to be free from defects in
material or workmanship for a period of 12 months from
the date of original purchase covering both parts and
labour. Under the terms of this warranty, the repair or
replacement of any part shall be the opinion of the
Company or its authorised agent. Should service
become necessary during the warranty period, the
owner should return the product to their nearest
authorised RYOBI Service Centre. In order to obtain
warranty service, the owner must include the Sales
Docket and Warranty Certificate to confirm date of
purchase. This Product is sold by the dealer or agent as
principal and the dealer has no authority from the
Company to give any additional warranty or guarantee
on the Company's behalf except as herein contained or
herein referred to.
Warranty Conditions
This warranty only applies provided that the Product has
been used in accordance with the manufacturer's
recommendations under normal use and reasonable
care (in the opinion of the Company) and such warranty
does not cover consumable components, damage,
malfunction or failure resulting from misuse, neglect,
abuse, or used for a purpose for which it was not
designed or is not suited and no repairs, alterations or
modifications have been attempted by other than an
Authorised Service Agent. This guarantee will not apply
if the tool is damaged by accident or if repairs arise from
normal wear and tear. The Company accepts no
additional liability pursuant to this warranty for the costs
of travelling or transportation of the Product or parts to
and from the service dealer or agent - which costs are
not included in this warranty. Certain legislation,
including the Trade Practices Act, 1974 (as amended)
and other state and territorial laws give rights to the
buyer and impose liability on the seller in certain
circumstances. Nothing herein shall have the effect of
excluding, restricting or modifying any condition,
warranty, right or liability imposed, to the extent only
that such exclusion, restriction or modification would
render any term herein void.
RYOBI AUSTRALIA PTY. LTD.
A.B.N. 98 002 277 509
SYDNEY: 359-361 Horsley Road, Milperra, N.S.W. 2214.
Contact during normal business hours.
Tel: [phone] - Fax: [phone] - Email: [email protected]
RYOBI NEW ZEALAND PTY. LTD.
AUCKLAND: 503 Mt Wellington Highway, Mt Wellington, N.Z.
Tel: [phone] - Free Call: 0800 279 624 - Fax: [phone] - Email: [email protected]
Contact during normal business hours.
BRISBANE: All enquiries Tel : [phone]
TOWNSVILLE: All enquires Tel : [phone]
MELBOURNE: 960 Stud Road, Rowville.Vic. 3178
Tel : [phone]
HOBART: All enquiries Tel : [phone]
ADELAIDE: All enquiries Tel : [phone]
PERTH: 33-35 Sorbonne Cres.,Canning Vale. W.A. 6155.
Tel : [phone]
THIS WARRANTY FORM SHOULD BE RETAINED BY THE CUSTOMER AT ALL TIMES.
For your record and to assist in establishing date of purchase (necessary for in-warranty service),
please keep your purchase docket and this form completed with the following particulars.
PURCHASED FROM :........................................................................................................................................................
ADDRESS OF DEALER : ..................................................................................................................................................
DATE: ................................MODEL NO.: ....................................................SERIAL NO.: ................................................
Present this form with your Purchase Docket when Warranty Service is required.