Zenoah Komatsu G260RC Anwendungshandbuch

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. 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

Throttle Lever

Fig.2

Fig.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 ←

NGK

Option(For Race)

Spark Plug ←

5. Maintenance

4) CARBURETOR

Items Standard Limit Measuring Device Remarks

Metering Lever set (mm) 1.65 ± 0.16 Vanier

Inlet Valve Opening Pressure (kg/cm2)1.3~2.3 Leak Tester

Inlet Valve Closing Pressure (kg/cm2)0.7~1.7 Leak Tester

3) MAINTENANCE SPECIFICATIONS

G230RC G260RC

Items Standard Limit Standard Limit

Measuring Device

Remarks

Bore (mm) ø32

Plating damaged

ø34

Plating damaged

Eye Checking

Diameter (mm) ø31.97 ø31.87 ø33.97 ø33.87 Micro Meter

Piston Ring

0.81 0.91 1.01 1.11 Thickness Gauge

Groove width (mm)

Piston Pin Hole (mm) ø8.01 ø8.05 ø8.01 ø8.05 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) 0.05~0.25 0.5 0.05~0.25 0.5 Thickness Gauge

Width (mm) 0.78 0.73 0.98 0.93 Micro Meter

Piston Pin Diameter (mm) ø8 ø7.98 ø8 ø7.98 Micro Meter

Connecting Rod Small end (mm)

ø11 ø11.05 ø11 ø11.05 Cylinder Gauge

Crankshaft Dia. at Main Bearing (mm)

ø12 ø11.98 ø12 ø11.98 Micro Meter

Eccentricity (mm) — 0.07 — 0.07 Dial Gauge

Axial Play (mm) — 0.5 — 0.5 Thickness Gauge

Gritty or Gritty or

Main Bearing — — —

Feels Flat Spot Feels Flat Spot

At the skirt end

and the right angle

to the piston pin.

When inserted in

a new cylinder.

Piston

Cylinder

Piston

Ring

Micro Meter

Cylinder Gauge

5. Maintenance

5) IGNITION SYSTEM

Items Standard Limit Measuring Device Remarks

Spark Plug Air Gap (mm) 0.6~0.7 0.7 Thickness Gauge

Ignition Coil/Flywheel Air Gap (mm) 0.3 0.4 Thickness Gauge

Primary 0.7 — Volt Meter

Secondary 6100 — Volt Meter

Reading between

primary terminal and

iron core.

Reading between

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=1.0) 65 50~80

Rotor M8 (P=1.0) 130 100~150

Cylinder M5 (P=0.8) 70 60~80

Crankcase M5 (P=0.8) 65 50~80

Spark Plug M10 (P=1.0) 110 100~120

Muffler M5 (P=0.8) 90 70~100

Fan Cover M5 (P=0.8) 35 30~40

Ignition Coil M4 (P=0.7) 33 25~40

Starter Case M4 (P=0.7) 13 10~15

Tapping Screw TP 4.3 25 20~30

Coil

Resistance

(Ω)

6. Special Tools

7) SPECIAL TOOLS

Part Name Part No. External Appearance Usage

1Puller Assy 2890-96100 To remove rotor.

2Piston Stopper 4810-96220

3Rod Assy 1101-96220 To remove/install piston pin.

4Air Gap Gauge 3330-97310 To set ignition coil.

5Hex Wrench 3304-97611

6Snap Ring Pliers 5500-96110 To remove snap ring.

To hold crankshaft when

disassembling/assembling

clutch and rotor.

For socket screw of Hex.

3mm, 4mm and 5mm.

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.

3. Remove clutch bolts(14mm Hex.).

2) REMOVING 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 and the coil.Tighten screws

while pressing the coil against the rotor.

Air Gap 0.3 ~ 0.4mm

Clutch Bolt

(14mm Hex.)

Rotor Nut

17mm Hex.

Puller Bolts

Puller

Rotor

Wrench

Air Gap Gauge

Ignition Coil

7. Service Guide

4) REMOVING PISTON PIN

1. Remove snap rings from both sides of the

piston pin.

2. Engage the rod assy(1101-96220) to the

piston pin and gently tap with a plastic hammer

to push out the pin while holding piston firmly.

Hard hammering may damage the big end of

the connecting rod.

5) INSTALLING PISTON

1. Make sure to point the arrow mark on the

piston 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 carburetor comes with a standard setting, it

is for optimum performance under the barometric

pressure and climatic conditions at factory, so it

may be re-adjusted according to load applied.

Idle rpm : 4000 ± 300 rpm (STD Spring)

H needle : 1 3/8 ± 1/4

L needle : 1 1/4 ± 1/4

NOTE

Plastic

Hammer

Rod Assy

Piston

Arrow Mark

Circlip

End Gap

Piston

H needle L needle

Idle Screw

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Zenoah Motor Handbücher

Zenoah

Zenoah 966669901 Bedienungsanleitung

Zenoah

Zenoah Komatsu G230RC Anwendungshandbuch

Zenoah

Zenoah G231PUM Anwendungshandbuch

Zenoah

Zenoah G4K-D Bedienungsanleitung

Zenoah

Zenoah G231 Heli Bedienungsanleitung

Zenoah

Zenoah Zenoah Bedienungsanleitung

Zenoah

Zenoah G261LS Bedienungsanleitung

Zenoah

Zenoah G320RC Bedienungsanleitung

Zenoah

Zenoah AIR G26 Bedienungsanleitung

Zenoah

Zenoah G230PU Bedienungsanleitung

Zenoah

Zenoah Komatsu G230RC Anwendungshandbuch

Zenoah

Zenoah G260PU-EI Anwendungshandbuch

Zenoah

Zenoah G230PU Bedienungsanleitung

Zenoah

Zenoah G430RC Bedienungsanleitung

Zenoah

Zenoah G450PU Bedienungsanleitung

Zenoah

Zenoah G200PU Bedienungsanleitung

Zenoah

Zenoah G300PUM Bedienungsanleitung

Zenoah

Zenoah G320PUM Bedienungsanleitung

Zenoah

Zenoah GZ50N Bedienungsanleitung

Zenoah

Zenoah G200PU-EI Bedienungsanleitung

Zenoah

Zenoah G240RC Bedienungsanleitung

Zenoah

Zenoah G320RC Bedienungsanleitung

Zenoah

Zenoah G800BPU Bedienungsanleitung

Zenoah

Zenoah G620PU Bedienungsanleitung

Beliebte Motor Handbücher anderer Marken

Rotax

Rotax 125 senior MAX evo Bedienungsanleitung

Kohler

Kohler K361 Bedienungsanleitung

MTD

MTD OHV Series Bedienungsanleitung

Kohler

Kohler COMMAND CH18-745 Bedienungsanleitung

Mercury

Mercury D4.2L D-Tronic Bedienungsanleitung

Selve

Selve SE Plus-RC Series Bedienungsanleitung

Perkins

Perkins 1206E-E66TA Bedienungsanleitung

Skov

Skov DA 174 Handbuch

Rossi

Rossi TX11 Series Bedienungsanleitung

Siemens

Siemens SIMOTICS T-1FW3 Merkblatt

AL-KO

AL-KO PRO 350 Bedienungsanleitung

MTU

MTU 12 V 4000 Lx4 Bedienungsanleitung

Nanni

Nanni N3.30 Gebrauchsanweisung

Nanni

Nanni N5.160 CR2 Bedienungsanleitung

KSB

KSB SuPreme Series Montageanleitung

Hiwin

Hiwin EM1 Series Bedienungsanleitung

Rotax

Rotax 912 i series Betriebsanleitung

Siemens

Siemens SIMOTICS XP 1MB1 Bedienungsanleitung