5. Maintenance
1) MAINTENANCE CHART
Before Every Every
Items Action Use 25 hours 100 hours Note
Leakage,
Check ✔
Damage/Crack
Idling Speed Check/Adjust ✔✔✔
Air-cleaner Check/Cleaning ✔✔ Replace if necessary
Spark Plug(gap) Check/Adjust ✔✔ ↑
Cylinder(barrel) Check/Cleaning ✔✔ ↑
Piston, Ring Check/Cleaning ✔✔ ↑
Muffler & Bolt Check/Cleaning ✔✔✔ ↑
Bearings Check/Cleaning ✔✔ ↑
Crank Shaft Check/Alignment ✔ ↑
2) SPECIFICATIONS AND TECHNICAL DATA
Items Unit Specifications Remarks
Bore x Stroke mm 32 x 28
Displacement cm
3
22.5
Effective Compression Ratio 8.8
Type Walbro WT
Carburetor
Venture(mm) ø12.7
Starting Recoil Starter
Type TCI
Ignition
Timing BTC 30°/8000rpm
Standard CMR7H NGK
Spark Plug Option(For Race) CR8HVX NGK
with Terminal Nut
Clutch Engagement Speed rpm 6000
No load max Speed rpm 19500
Idling Speed rpm 4000
Without Air Cleaner
Max. Power kW/rpm 2.10/14000
and Muffler
Max. Torque N.m/rpm 1.72/10000 ↑
Fuel Consumption g/kW·h 680 (500g/ps·h) ↑
Carburetor H 1 3/8 ± 1/4
Standard setting L 1 1/4 ± 1/4
5
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