Zenoah Komatsu G230RC Application guide

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

1. Specifications
2. Fuel
•Mix high-octane (over 95) gasoline and high
grade 2 cycle oil (JASO FC Grade oil or ISO
EGC grade) in the ratio of 25 : 1.
1) Never use any alcohol fuel or alcohol added
fuel, or the rubber parts in the carburetor
and engine will be damaged.
2) Gasoline 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 Type G230RC G260RC
Overall Size (L x W x H) 167 x 204 x 195mm
Weight 2.07kg
Displacement 22.5cm325.4cm3
Clutch Engagement 6000rpm (STD Spring)
Carburetor Type WT-603A
Spark Plug CHAMPION RZ7C
Spark Plug Gap 0.65mm
Rotating Direction Counter-Clockwise (View From PTO)
3

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 G230RC G260RC Remarks
Bore x Stroke mm 32 x 28 34 x 28
Displacement cm322.5 25.4
Effective Compression Ratio 9.2 8.8
Type Walbro WT ←
Carburetor
Venture(mm) ø12.7 ←
Starting Recoil Starter ←
Type TCI ←
Ignition
Timing BTC 30°/8000rpm ←
Standard RZ7C ←CHAMPION
CR8HVX
with Terminal Nut
Option(Hot Type) CMR6H ←↑
Clutch Engagement Speed rpm 6000 ←
No load max Speed rpm 19500 ←
Idling Speed rpm 4000 ←
Without Air Cleaner
Max. Power kW/rpm 2.15/14000 2.20/14000
and Muffler
Max. Torque N.m/rpm 1.79/10000 1.87/10000 ↑
Fuel Consumption g/kW·h 750 (550) 765 (565) ↑
Carburetor H 1 3/4 ± 1/4 ←
Standard setting L 1 1/2 ± 1/4 ←
5
NGK
Option(For Race)
Spark Plug ←