Zenoah G230RC Owner's Service Manual
G230RC
OWNER’S SERVICE MANUAL
T2070-93110 (205)
• 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
Overall Size (L x W x H) 167 x 204 x 195mm
Weight 2.07kg
Engine Type G230RC
Displacement 22.5cm
3
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)
3
3. Engine Starting
4. Operation
• Push the primer pump several times until
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)
• Open the choke(Fig.2), throttle idle~1/4 open
• Pull the starter quickly
• Operate engine for a few minutes for the
warming up.
• In case of engine warm condition, 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.
IMPORTANT
• This engine is already tuned up to get high
power and high speed, and needs correct
maintenance to keep such high performance.
• The details for operation may be described in
the separate owners manual to be issued by car
manufacturer.
• Be sure to have the engine cool down for 30
seconds at idle speed after full throttle running.
Fig.1
Choke
Lever
Open
Close
Throttle Lever
Fig.2
Fig.3
4
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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