GS21R エンジン ENGINE
Contents
1. 7 During the break in adjustthe idle rpm with the throttle valve adjustment screw If rotating it clockwis e righ0 idle rpm increase Idle rpm are halfway between rpm when the clutch engages and rpm when the engine stalls Setidle rpm towards the lower end if possible Unscrew the throttle valve adjustment screw to decrease rpm Tighten the throttle valve adjustment screw to increase rpm py Wide opening y Narrow opening Throttle Valve Adjustment Screw Now adjustthe needle valve Its optimum setting is when the engine performs bestand the throttle control is in the high position If tightening it further engine RPM will drop leading to engine damage Once you have found the needle valve s optimum setting unscrewit10 20 for normal operation 9 Once the setting for normal operation is done set the air fuel mixture adjustment screw Stop the car and move the throttle control from the idle position to high position2. 30 lt 40 30 gt 40 2 1 2
3. Before commencing assembly please read these instructions thoroughly UU ENGINE GS 21 HE AD NEEDLE VALVE FUEL INLET THROTTLE VALVE ADJUSTMENT SCREW STARTER KNOB THROTTLE LEVER AIR FUEL MIXTURE ADJUSTMENT SCREW No 74721 RECOIL STARTER No 74721 1 BP KYOSHO NO 73001 BP KYOSHO No 73401 No 73801 No 73802 GS No 74902 N OS A5
4. pp CO 10 20 30 gt 40
5. 6520 17 Recoil Starter Assembly 3500 QO Crankshaft 200 SsP 6520 17 1 Oneway amp shaft Set 1200 6520 42 sp Cylinder Head 3090 7mm 6520 17 2 Back Plate 600 LU Carburetor Assembly 7mm 2900 I ws Nai 6520 17 3 800 Oo 13 6 1 oO 6520 174 o ring amp shim 100 R C 243 0034 153 TEL 046 229 4115 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE lt 10 00 17 00 2001 KYOS HO 63010106 1 PRINTED IN JAPAN
6. If fumes exiting the muffler are white and rpm increase slowly fuel is too abundant during the idle To lean the mixture rotate the air fuel mixture adjustment screw clockwise right each time 30 40 Inthe opposite case if the engine stalls fumes are notvisible and rpm increase slowly fuel is not abundant enough This time richen the mixture and rotate the screw anticlockwise lef0 each tme 30 40 Note The optimum setting may vary according to the kind of glow plug and glow fuel used Note The optimum setting may vary due to chang ing weather conditions The best position of Needle Valve must be opened the Needle Valve more than 2 and 1 2 turns from the fully closed position Warning Closing the Needle Valve too much carries the risk of seriously damaging the engine Caution Do these adjustments from step 8 only while running your car The engine wil be damaged if the wheels are aloof from MAINTENANCE After running the engine draw out any leftover fuel from the fuel tank Draw out fuel from inside the engine as well Fuel that remains inside the engine may clog the engine and make tt difficult to start Remove any dirt from the outside of the engine using methanol and a brush Do not allow fire or any excessive heat source to come into contact with methanol which is highly inflammable This may cause fires Never use gasoline or thinner when cleaning Warning his may cause Fires EX
7. plug Battery Holder Setfrom KYOSHO No FD 30 Plug Wrench For removals when examining or exchanging the glow plug Locking Jig amp Wrench Setfrom KYOSHO No 80312 Fuel Filter Fuel Filter from KYOSHO No 1876 A fuel bottle comes in very handy for quick and neat refillings of the tank Quick Fil Fuel Bottle 250cc 500ccfrom KYOSHO No 96421 96422 GS21R ENGINE MOUNTING The position for mounting the engine depends largely on the modelitself Follow the instruction manual supplied with the model to mount the engine properly ENGINE STARTING amp BREAK IN Adjustthe needle valve and air fuel mixture adjustment screw to their standard position as follows 3 te I DNeedle Valve Unscrew 3 turns unscrewed from closed position Air F uel Mixture Adjustment Air F uel Mixture Adjustment S crew Hold tight so it 9 Tigh
8. 30cm 50cm 5 5 lt 10 6 2 lt 3 17 8 1 Adjustments lt may slighty vary according to the type of glow plug and glow fuel As long as the engine is hot avoid touching anything except the needle Warning Valve If disregarding this warning ENGINE STARTING amp BREAK IN Proceed as follows when starting and breaking the engine in 1 Make sure the needle valve is unscrewed 3 turns from closed position 2 Fill fuel into the tank Move the throttle lever to the high position prime the engine push the choke button 2 3
9. PLODED VIEW 6520 18 6520 34 0 6520 13 0 es2o32 6520 17 6520 34 6520 12 6520 39 43 6520 17 2 6520 17 4 6520 18 8365 SN 6520 40 6520 17 1 6520 17 3 N 0 6520 18 6520 41 6520 10 6520 30BB 6520 14 For Japanese market only uN 8 uN 200 200 6510 27 Needle Valve Set 00 6520 18 srew set 2 GS 21R 3200 6520 10 shim 200 6520 30BB crankcase Gs 21R GS 21X amp GS 21R 6520 12 piston pm 300 6520 32 Head Gasket GS 21X amp GS 21R 200 GS 21R 6520 13 Connecting Rod 600 6520 34 piston amp Cylinder Set GS 21R 3200 6520 14 carburetor S topper 200 6520 38 Back Cover 9 8mm 6520 15 DustCover 250 6520 39 Carburetor Assembly 8mm 2500 6520 16 Carburetor Seal 100 54040 Flywheel S pacer 90
10. R5 ENYA No 4 No 5 KYOSHO No FD 30 KYOSHO No 96411 4 amp KYOSHO No 80312 5 KYOSHO No 1876 250cc 500cc KYOSHO No 96421 96422 THE FINEST RADIO CONTROL MODELS INSTRUCTION SHEET No 74022 EOUIPMENT NECESSARY FOR STARTING THE ENGINE NOT INCLUDED Fuel for R C models Use glow fuel available in all R C hobby shops BP Handy Fuel from KYOSHO No 73001 KYOSHO PRO Spec Fuel RACING No 73801 KYOSHO PRO Spec Fuel BUGGY No 73802 Glow Plug Use a high performance glow plug 0 S A5 R5 ENYA No 4 No 5 Never use gasoline kerosene or alcohol instead of glow fuel Warning his may cause fires BoosterCord or One touch Glow Plug Heater and Batteries Used for heating and electrifying the glow
11. ten until the will not rotate groove disappears w Groove A 1 3 2 2 3 2 3 3 4 20
12. times or put 2 3 drops of fuel directly into the carburetor and move the throttle lever back to the slow throttle position CAUTION carefully check if no dirt or deposits clog the tank 3 Attach the booster cord or one touch glow plug heater to the engine in order to electrify the glow plug 4 Quickly pull the recoil starter rope starter knob several times Only pull out 20 30cm of cord Caution Be careful not to pull out more than 50cm of cord because you may tear it and the spring inside the recoil starter 5 Once the engine is started wait5 10 seconds before de taching the booster cord or one touch glow plug heater 6 Run the engine another 2 3 tanks and make sure you do not apply full throtlle Also afterwards do not increase RPM abruptly Tighten the needle valve by 1 8 turns and continue to run the engine handling it gently Caution After each tank allow the engine to cool off naturally 7
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