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2.0 Security Summary

2.1 Environment

Use in open spaces away from crowds.

Recommended height below 4km above sea level.

It is used in the environment of - 20

 ~40

.

Use in legal areas

2.2 Prechecking

The fuel tank position needs to be higher than the oil pump position to ensure smooth oil supply.

Check the fixing parts of the power system to ensure that the screws and nuts are not loose.

Check oil kettle and fuel pipeline to ensure that the fuel is leak free.

Check the water cooling kit of the power system to make sure it is connected properly and securely.

Make sure the parts are intact. If any parts are dirty, deteriorated or damaged, please clean or 

replace them before use.

Make sure the tank is filled with fuel and the cooling tank is filled with coolant.

Make sure there are no air bubbles in the coolant circuit and the coolant will circulate normally 

after power on.

Make sure that the oil pump has entered the oil after the power is turned on, 

the gasoline in the return pipe is flowing back to the fuel tank continuously.

2.3 Operation

It is strictly forbidden to disconnect the power battery (aircraft battery) 

after the engine is started.

Do not approach engine and propellers of aircraft that are in operating.

The gasoline used in the engine is flammable and explosive liquid. 

Please keep away from open flames and prohibit smoking.

Altitude and power comparison table

Altitude 0m

Power 100%

Altitude 1000m
Altitude 2000m
Altitude 3000m
Altitude 4000m

Power 93%
Power 85%
Power 76%
Power 64%

Summary of Contents for G120EFI

Page 1: ...www walkera com Control Power System User Manual April 24 2020 V1 1...

Page 2: ...1 Engine startup 7 2 Engine Operation 7 3 Close Engine 8 0 Engine Maintenance and Warranty 8 1 Engine Maintenance 8 2 Engine Warranty 9 0 Common faults 9 1 Startup Difficulty 9 2 Performance degradati...

Page 3: ...d fuel atomization effect reduced fuel consumption and exhaust pollution of engine Electronic Control Unit ECU responds quickly to the change of throttle improves the engine s handling and acceleratio...

Page 4: ...n or replace them before use Make sure the tank is filled with fuel and the cooling tank is filled with coolant Make sure there are no air bubbles in the coolant circuit and the coolant will circulate...

Page 5: ...5 3 0 Parts Introduction 1 1 2 2 3 3 4 6 7 8 5 3 1 Engine Introduction 1 Spark plug 2 Cooling cylinder cover 3 Cylinder liner 4 Casing 5 Generator 6 Silencer 7 Nozzle 8 Air filter...

Page 6: ...SBUS 2 Ignition signal 3 Speed signal 4 PWM OUT 5 Servo 1 6 Servo 2 19 LED light 20 LED light 21 Battery voltage 22 UART1 23 UART2 24 SWD 13 12V 14 Sensor 1 15 Sensor 2 16 PWM IN1 17 PWM IN2 18 LED li...

Page 7: ...uel ratio Coolant Environment temperature Maximum altitude Double Cylinder Gasoline Engine 6 15kg including spare parts 375 290 279mm 120CC WK WS 150 001 7 4KW 53kg flight near sea level and related t...

Page 8: ...l the engine in the proper position of UAV and the default is vertical installation 4 20 aperture 1 Pls use the cross screwdriver to loosen the air filter screw 2 Install the air filter into the engin...

Page 9: ...ller to ensure good heat dissipation performance Aperture 3 5 6 Fixed cooling box mounting screw aperture 3 5 2 40 aperture Rectifier Starter Radiator Radiator Cooling Box Liquid pump Engine The cooli...

Page 10: ...tifier Starter with Engine and Liquid Pump Black line to green line welding C C Yellow line to yellow line welding D D blue line to blue line welding E E Rectifier Starter Entrance Exit Liquid pump Co...

Page 11: ...r Starter 2 Sensor_2 4 PWM_IN2 3 PWM_IN1 1 Sensor_1 Starter Starter Power Board 12S LiPo Battery Capacity 1800mAh discharge rate 75C DC50V battery voltage detection 1 SBUS 2 Ignition signal 3 Rotation...

Page 12: ...2 2 Ignition signal 5 Servo 1 3 Rotation speed signal 3 PWM_IN1 7 CDI power Nozzle Oil pump 1 SBUS 2 Ignition signal 3 Rotation speed signal 4 PWM_OUT 5 Servo 1 6 Servo 2 7 CDI power Connection Diagra...

Page 13: ...13 Engine Silver inlet oil pipe Yellow transparent oil return pipe Colorless transparent oil inlet pipe 5 3 Oil circuit connection diagram Oil Pump Oil outlet Oil filler Fuel Tank...

Page 14: ...2 Shake blended fuel in an inverted proportioning pot 3 Pls open the cover of the drone oil kettle inject the blended fuel into the drone oil kettle and tighten the cover Engine Coolant Please use ca...

Page 15: ...M Control Signal of the Remote Controller Engine status PWM pulse width signal input of remote controller Close engine Engine idling Running engine PWM pulse width 1100us 1400us PWM pulse width 1500us...

Page 16: ...ning engine position and observe the bus voltage 49 1V as normal If it is normal it will run steadily for about one minute to preheat the engine 2 Push the remote controller or start the flight contro...

Page 17: ...return to the factory for full maintenance once altogether reach 300 hours The cost of maintenance for each manufacturer is about USD500 5 The engine is a liquid cooled engine The coolant liquid tank...

Page 18: ...od of cleaning spark plug is as follows Carburetor Cleaner Spark plugs The method of cleaning air filter element is as follows 2 Clean or replace air filter element with carburetor cleaner 1 Pull the...

Page 19: ...l circuit damage Please contact the manufacturer Air filter has oil or dust Air filter has oil or dust Clean the air filter with chemical cleaner Clean the air filter with chemical cleaner The spark p...

Page 20: ...connection line x1 10 0 List of items Liquid pump x1 G120EFI Control Box x1 Engine support x1 Engine x1 Cooling Box x1 Radiator x2 Rectifier Starter x1 8 13 radiator tube x3m 12 17 radiator tube x1m D...

Page 21: ...ion line x1 PWM throttle signal connection line x1 CDI Power connecttion line x1 Servo connection line x1 Engine Hall connection line x1 Ignition signal connection line x1 User s Manual x1 Spark plug...

Page 22: ...o Ltd Add No 48 Wantai Rd Taishi Industrial Park Dongchong Town Nansha Dist Guangzhou China 511453 Hotline 86 20 84915115 This manual is subject to update without prior written notice Please refer to...

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