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G230RC/G260RC

OWNER’S SERVICE MANUAL

T2070-93111 (307)

• This engine is designed

for the radio controlled
car use. Komatsu Zenoah
assumes that no
responsibility for this
engine that is modified or
used for any other
applications.
Purchaser has all
responsibility against any
laws and regulations
existing in the country,
Komatsu Zenoah is
exempt from such law
and regulations.

• Read this OWNER’S

SERVICE MANUAL before
operating this engine. 

WARNING

Summary of Contents for Komatsu G260RC

Page 1: ...enoah assumes that no responsibility for this engine that is modified or used for any other applications Purchaser has all responsibility against any laws and regulations existing in the country Komat...

Page 2: ......

Page 3: ...ne is very flammable Avoid smoking bringing any fires near fuel 3 To prevent all possible problem on fueling system make sure to use the fuel filter and fuel pipe packed as accessories WARNING Engine...

Page 4: ...ition choking may not be necessary Over choking may cause starting difficulty due to wet spark plug In this case change spark plug or dry it and remove fuel rest in the cylinder by pulling starter IMP...

Page 5: ...0RC G260RC Remarks Bore x Stroke mm 32 x 28 34 x 28 Displacement cm3 22 5 25 4 Effective Compression Ratio 9 2 8 8 Type Walbro WT Carburetor Venture mm 12 7 Starting Recoil Starter Type TCI Ignition T...

Page 6: ...1 8 05 Cylinder Gauge Clearance between Piston and 0 03 0 06 0 15 0 03 0 06 0 15 Cylinder mm Clearance between Groove and 0 02 0 04 0 1 0 02 0 04 0 1 Thickness Gauge Piston Ring mm End Gap mm 0 05 0 2...

Page 7: ...tween sparking cord end and iron core 6 TIGHTENING TORQUE Items Screw Size Standard kg cm Limit kg cm Remarks Carburetor M5 P 0 8 35 30 40 Insulator M5 P 0 8 35 30 40 with Locktight glue Clutch M6 P 1...

Page 8: ...tor 2 Piston Stopper 4810 96220 3 Rod Assy 1101 96220 To remove install piston pin 4 Air Gap Gauge 3330 97310 To set ignition coil 5 Hex Wrench 3304 97611 6 Snap Ring Pliers 5500 96110 To remove snap...

Page 9: ...ROTOR FAN 4 Remove the rotor nut 12mm Hex 5 Remove the rotor using the puller assy 2890 96100 Apply 8mm puller bolts 3 ASSEMBLING ROTOR Insert the gauge 3330 97310 in between the rotor magnet metal an...

Page 10: ...on to the exhaust side 2 Fit the circlip in the groove so as to face the end gap below Deformed circlip may come off during engine operation and damage the engine 6 CARBURETOR ADJUSTMENT The carbureto...

Page 11: ...out cylinder piston or piston ring Exchange poor compression 2 Gas leakage from cylinder and crank case gasket Apply liquid gasket and reassemble No fuel supply 1 Choked breather air hole Cleaning 2...

Page 12: ...10 Parts list G230RC 12 G230RC...

Page 13: ...1 CRANKSHAFT C 1 27 1650 43230 NUT 1 M8x1 0 28 1000 43240 KEY 1 29 1140 43250 SIM 1 30 1140 51111 SHOE 2 31 T2070 51220 SPRING 1 6000rpm IN 32 1140 51250 SCREW 2 M6x22L 33 1140 51230 WASHER 2 34 1140...

Page 14: ...10 Parts list G230RC 14 G230RC...

Page 15: ...REEN 1 95 3304 81441 RING 1 96 3360 81440 PLUG 1 98 T2070 82410 LEVER 1 99 T2070 82510 SPACER 1 100 0263 90560 SCREW 2 M5x60L 101 0263 90550 SCREW 2 M5x50L 102 T2070 82000 CLEANER A 1 103 5731 82011 H...

Page 16: ...10 Parts list G260RC 16 G260RC...

Page 17: ...1 CRANKSHAFT C 1 27 1650 43230 NUT 1 M8x1 0 28 1000 43240 KEY 1 29 1140 43250 SIM 1 30 1140 51111 SHOE 2 31 T2070 51220 SPRING 1 6000rpm IN 32 1140 51250 SCREW 2 M6x22L 33 1140 51230 WASHER 2 34 1140...

Page 18: ...10 Parts list G260RC 18 G260RC...

Page 19: ...REEN 1 95 3304 81441 RING 1 96 3360 81440 PLUG 1 98 T2070 82410 LEVER 1 99 T2070 82510 SPACER 1 100 0263 90560 SCREW 2 M5x60L 101 0263 90550 SCREW 2 M5x50L 102 T2070 82000 CLEANER A 1 103 5731 82011 H...

Page 20: ...OF COMPENSATION 1 KZ compensates such quality material and production faults by repairing or replacing 2 KZ shall not compensate any other accompanied or benefit losses caused to user and distributor...

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