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T2070-93110 (205) OWNER’S SERVICE MANUAL G230RC WARNING • 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...
1. Specifications Overall Size (L x W x H) 167 x 204 x 195mm Weight 2.07kg Engine Type G230RC Displacement 22.5cm Clutch Engagement 6000rpm (STD Spring) Carburetor Type WT-603 Spark Plug NGK CMR7H Spark Plug Gap 0.65mm Rotating Direction Counter-Clockwise (View From PTO) 2.
3. Engine Starting • Push the primer pump several times until Fig.1 overflown fuel flows out. (Fig.1) • Close the choke lever(Fig.2), and move the throttle lever 1/4~1/3 open position. • Pull the starter(knob) quickly until first firing noise. (Fig.3) •...
5. Maintenance 3) MAINTENANCE SPECIFICATIONS Items Standard Limit Measuring Device Remarks Compression (kg/cm Compression Gage Bore (mm) ø32 Plating damaged Eye Checking At the skirt end and the right angle to Diameter (mm) ø31.97 ø31.87 Micro Meter the piston pin. Piston Ring 1.01 1.11...
5. Maintenance 5) IGNITION SYSTEM Items Standard Limit Measuring Device Remarks Spark Plug Air Gap (mm) 0.6~0.7 Thickness Gauge Ignition Coil/Flywheel Air Gap (mm) Thickness Gauge Reading between Primary — Volt Meter primary terminal and Coil iron core. Resistance Reading between (Ω) sparking cord end and Secondary...
6. Special Tools 7) SPECIAL TOOLS Part Name Part No. External Appearance Usage Puller Assy 2890-96100 To remove rotor. To hold crankshaft when Piston Stopper 4810-96220 disassembling/assembling clutch and rotor. Rod Assy 1101-96220 To remove/install piston pin. Air Gap Gauge 3330-97310 To set ignition coil.
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7. Service Guide 1) REMOVING CLUTCH SHOE 1. Remove the housing and plug cap. 2. Remove the spark plug and fit the stopper(4810-96220) into the plug hole. Clutch Bolt 3. Remove clutch bolts(14mm Hex.). (14mm Hex.) Rotor Nut 2) REMOVING ROTOR (FAN) 4.
7. Service Guide 4) REMOVING PISTON PIN Rod Assy 1. Remove snap rings from both sides of the Piston piston pin. 2. Engage the rod assy(1101-96220) to the Plastic Hammer piston pin and gently tap with a plastic hammer to push out the pin while holding piston firmly. NOTE Hard hammering may damage the big end of the connecting rod.
9. Trouble Shooting 1) ENGINE DOES NOT START Description Cause Countermeasure No spark in the spark plug Spark Plug 1. Wet spark plug electrodes Make them dry 2. Carbon deposited on the electrodes Cleaning 3. Insulation failure by insulator damage Exchange 4.
11. Warranty 1) SCOPE OF APPLICATION This engine manufactured by Komatsu Zenoah Co. (hereinafter referred as KZ) and sold to the user directly or through distributor/manufacturer, shall entitle to be covered by this warranty. 2) LIMIT OF WARRANTY KZ warrants that ; 1.
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Head Office : 1-9 Minamidai, Kawagoe-city, Saitama, 350-1192 Japan Phone: (+81)492-43-1117 Fax: (+81)492-43-7197...
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