Kyosho GS21R - User Manual

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Before commencing assembly, please read these instructions thoroughly.
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INSTRUCTION SHEE T
No.74721
THROTILE VALVE ADJUSTMENT SCREW
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STARTER KNOB
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AI AJFUEL MIXTURE ADJUSTMENT SCREW
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(BP7~ - ~~ t:-?1~?- KYOSHO No.73401)
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7'CJ ;I."< ·1 ? 7 ~ - 1~ v- :,.. / ?" No .7 3801 )
(7' CJ ;I."<·>?7.:z. -J~ J("f - No.73802)
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(·~;t-J~!S>' --1:! ·1 ~ KYOSHO No.F0-30)
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96421 196422)
1
eE OUIPME NT NE CE SS ARY FOR S TARTIN G
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1. Fuel for RIC models:
Use glow
fuel (available in all RIC hobby shops).
(Handy Fuel from
KYOSHO No. 6412)
(KYOSHO PRO Spec Fuel RACING No. 73801)
(KYOSHO PRO Spec
Fuel BUGGY No. 73802)
2. Glow Plug:
Use a high performance gl
ow plug.
(O.S. I AS, AS ; ENYA I No.4, No.5)
&
Warning
Never use gasoline, kerosene or
alcohol instead of glo w fuel!
This may cause flresl
3. Booster Cord or One-touch Gl ow Plug Heater, and
Batteries:
Used lor heating and
elec1rtlying the glow plug.
(Battery
Holder Set from-KYOSHO No. FD-30)
4. Plug Wrench:
For removals when examining or exchanging the glow plug.
(locking Jig
& Wrench Set from KYOSHO No. 80312)
5. Fuel Filter:
(Fuel Filter I rom KYOSHO No. 1876)
A fuel
bonle comes in very handy for quick and neat
·refillings of the tank.
(Quick-Fill Fuel
BoHle 250cc ISOOcc from KYOSHO
No. 96421196422)

Summary

Engine Parts Identification

Equipment for Engine Starting

Model Fuel Selection

Use glow fuel suitable for R/C models; specific KYOSHO fuels listed.

Glow Plug Requirements

Use a high-performance glow plug for proper engine operation.

Starting Aids

Used to heat and electrify the glow plug for starting.

Plug Wrench Tool

Tool for examining or exchanging the glow plug.

Fuel Filter Installation

Essential filter for the engine's fuel system.

Engine Mounting Instructions

Engine Starting and Break-in Procedure

Initial Carburetor Adjustments

Adjust needle valve and air/fuel mixture to standard positions.

Fueling and Priming

Fill fuel tank, prime engine, set throttle to slow.

Glow Plug Electrification

Attach booster cord/heater to electrify glow plug.

Recoil Starter Operation

Pull recoil starter rope several times to start engine.

Detaching Booster Cord

Wait 5-10 seconds after starting, then detach booster cord.

Initial Break-in Runs

Run for 2-3 tanks, avoid full throttle, adjust needle gently.

Idle RPM Adjustment

Adjust idle RPM using throttle valve adjustment screw.

Needle Valve Optimization

Optimize needle valve for best speed at high throttle.

Air;Fuel Mixture Adjustment

Adjust mixture for acceleration, richen or lean as needed.

After Use Maintenance

Exploded View and Parts List

Kyosho GS21R Specifications

General

Brand	Kyosho
Model	GS21R
Category	Engine
Language	English