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OWNER’S SERVICE MANUAL

115 50 57-26 (206)

WARNING 

• These engines are designed

for radio controlled
products.

• When replacing parts, use

only parts which have been
certified by Zenoah.

• Zenoah assumes that no

responsibility for these
engines that are modified or
used for any other
applications.

• Purchaser has all

responsibilities against any
laws and regulations
existing in the country,
Zenoah is exempt from
such laws and regulations.

• Read and completely

understand this OWNER'S
SERVICE MANUAL before
operating these engines.

MODEL:

G231PUM – for radio control Boat
G231PUH – for radio control Helicopter
G260PU

– for radio control Airplane

G260PUM – for radio control Boat
G260PUH – for radio control Helicopter
G290PUM – for radio control Boat

[G260PU]

[G231PUH]
[G260PUH] 

[G231PUM]
[G260PUM]
[G290PUM]

Summary of Contents for G231PUH

Page 1: ...Purchaser has all responsibilities against any laws and regulations existing in the country Zenoah is exempt from such laws and regulations Read and completely understand this OWNER S SERVICE MANUAL...

Page 2: ...gulations in the countries Use genuine parts for replacement Check the propeller rotor and screw propeller every time If it is damaged replace it with a new one If the propeller or the rotor or the sc...

Page 3: ...olt 01252 30560 2 Muffler T2710 15110 3 Bolt T1565 72211 4 Spacer 1158 15420 5 Gasket 1140 13141 6 Spacer 1145 15412 7 Engine 8 Gasket T2075 13150 9 Carburetor T2077 81000 10 Air Cleaner 848EP18300 11...

Page 4: ...RPM zone Note carefully that if the engine is vibrated at idling then the idling RPM is likely to get unstable due to overflow at carburetor by the vibration 5 Tighten the nut M8 with a torque of 80 1...

Page 5: ...operation Make sure to use the rotor which is recommended by helicopter manufacturer Screw Propeller for boat The exhaust system e g muffler is not equipped with as standard When you select the exhaus...

Page 6: ...Incorrect fuel filter use causes engine trouble like carburetor s fuel passage stuffing or piston surface scratching etc G260PU A HAND FLIP START Since the G260PU is equipped with the ultra compact C...

Page 7: ...d make sure that the helpers hold the airplane firmly Also make sure that the electric motor has a power enough to run the engine at minimum 1 100 rpm How to start a Fill the fuel tank with the fuel b...

Page 8: ...ock position G260PUH G231PUH e Quickly pull the starter cord when the initial combustion noise is heard f When the initial combustion noise is heard open the choke set the throttle valve at the idle p...

Page 9: ...makes the mixture gas leaner and turning it counterclockwise makes it richer Set this needle at a position which is 1 4 open from best mixture maximum R P M position High Speed needle Turning this ne...

Page 10: ...ormance The details for operation as complete product may be provided from complete product manufacturer Always keep well maintenance according to the Maintenance clause described in this owner s serv...

Page 11: ...90PUM Items Standard Limit Standard Limit Standard Limit Measuring Device Remarks Bore mm 32 Plating damaged 34 Plating damaged 36 Plating damaged Eye Checking Diameter mm 31 97 31 87 33 97 33 87 35 9...

Page 12: ...h core 2 1 k Sparkplug wire Earth core 6 TIGHTENING TORQUE Standard Limit Items Screw Size Remarks N m kg cm N m kg cm Carburetor M5 P 0 8 3 4 35 2 9 3 9 30 40 Insulator M5 P 0 8 4 4 45 3 9 4 9 40 50...

Page 13: ...490 96101 To remove rotor 2 Piston Stopper 4810 96220 3 Rod Assy 1101 96220 To remove install piston pin 4 Hex Wrench 3304 97611 5 Snap Ring Pliers 5500 96110 To remove snap ring To hold crankshaft wh...

Page 14: ...plate and confirm that the air gap is 0 3 0 4mm by thickness gage 3 REMOVING PISTON PIN Fig 9 1 Remove snap rings from both sides of the piston pin 2 Engage the rod assy 1101 96220 to the piston pin...

Page 15: ...n out cylinder piston or piston ring Exchange poor compression 2 Gas leakage from cylinder and crank case gasket Apply liquid gasket and reassemble No fuel supply 1 Choked breather air hole Cleaning 2...

Page 16: ...15 Parts list 16...

Page 17: ...RING 1 25 1 1600 41310 PISTON PIN 1 1 1 25 2 1101 41310 PISTON PIN 1 1 25 3 574 79 12 01 PISTON PIN 1 26 1260 41320 SNAP RING 2 2 2 2 2 2 27 5500 41410 BEARING 1 1 1 1 1 1 28 1101 41340 WASHER 2 2 2 2...

Page 18: ...English 1 1 1 1 1 1 72 2 T2075 93122 MANUAL Japanese 1 1 73 1490 96101 PULLER ASSY 1 1 1 1 1 1 OPTION 74 4810 96220 STOPPER 1 1 1 1 1 1 OPTION 75 1101 96220 ROD ASSY 1 1 1 1 1 1 OPTION 76 3699 91975 S...

Page 19: ...20 PLUG welch 1 15 3310 81230 LEVER 1 Q TY UNIT 16 3310 81240 SCREW 1 17 3310 81250 PIN 1 18 2630 81330 SCREW 1 19 3350 81380 SPRING 1 20 1172 81370 SHAFT throttle 1 21 2670 81410 SPRING 1 22 2880 814...

Page 20: ...hall not compensate any other accompanied or benefit losses caused to user and distributor manufacture by such faults and through repairing or replacing 4 Term of Warranty Three 3 months after purchas...

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