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[ NOTE ] 

1. Be sure to use a gasoline-resistant fuel piping. (Do not use any silicon rubber tube). 
2. Never use any alcohol fuel or alcohol added fuel, or the rubber part in the carburetor will

be damaged. 

1. Avoid starting engine by hand flipping propeller as it may cause injury. Make sure to start

by using built-in spring starter or large size electric starter with reduction gear (available
on the market) .

2. Make sure to put on thick glove when starting engine.

How to Start the Engine 

1. Fill the fuel tank with the fuel. 
2. Close the choke valve and open the throttle valve approximately 1/3 ~ 1/2 of the full open

position. 

3. Rotate the propeller counterclockwise until the piston passes over its top dead point.

Then rotate it clockwise for 1/2 ~ 3/4 revolution to wind up the spring, and release the
propeller. Repeat this several times until the initial firing sound is heard. 

4. Upon hearing the initial firing open the choke valve and set the throttle to the idle or

slightly open position. Take the same procedure as mentioned above step 3, and the
engine will start.

[ NOTE ] 

• Be sure to keep holding propeller firmly by other hand while winding up the spring for

starter. 

• Be sure to open the choke when the engine first fires. 
• When the choke is opened, be sure to close the throttle valve to a position near the idle

position before starting the engine (If the engine is started while the throttle wide open it will
develop a high level of power and thrust which can be very dangerous). 

How to Stop the Engine 

For stopping the engine, the black lead
wire from the coil should be grounded to
the engine body, or the throttle valve
should be closed completely.

The carburetor is provided with 3 adjust screws which are set to the best (approximately)
positions by our company, but they may need a little adjustment depending on the
temperature, atmospheric pressure (altitude), etc. of the area where the engine is used. Start
the engine without making any adjustments. Make readjustments only when the engine
shows any mal-functioning. 

[ NOTE ] 

Be sure to stop the engine before starting the adjustment, thus ensuring safety. 

Idle Screw:

Turning this screw clockwise increases the idling R.P.M.  Turning it

6.  Carburetor Adjustment

5.  Operation

3

KILL 
SWITCH

BLACK LEAD

RED LEAD

ENGINE BODY 
EARTH

Summary of Contents for G800BPU

Page 1: ...of the engine This engine is designed to be used to Radio controlled products In case any modification by customer ZENOAH shall not bear any responsibility from the damage caused by such modification...

Page 2: ...the reverse side of the mount to prevent bolts from sinking into the mount Before flying the aircraft be sure to check for loose bolts 2 Since this engine is equipped with a float less carburetor wit...

Page 3: ...3 and the engine will start NOTE Be sure to keep holding propeller firmly by other hand while winding up the spring for starter Be sure to open the choke when the engine first fires When the choke is...

Page 4: ...gradually This engine is used for power source for radio controlled airplane so you are strictly requested to check engine and relative parts of airplane 1 Daily check before starting Leakage damage c...

Page 5: ...e Re assembling cylinder and intake manifold 1 Coat the oil on the inner surface of cylinder 2 The piston is provided with a knock pin which stops the piston ring from turning Set the split section o...

Page 6: ...0 in x 1 22 in x 2 Compression ratio 8 1 1 Maximum output 5 52kW 10000rpm 4 41kW 10000rpm with Muffler Operating engine speed 1800 10000rpm Weight 3 5kg 7 9Ibs with mufflers spring starter Ignition sy...

Page 7: ...202 Bearing 1 49 1400 21220 Oil seal 1 Q ty unit Description Parts No Index No 50 2670 21250 Elbow 1 51 1065 81100 Pipe 1 52 2898 21310 Gasket crankcase 1 53 01252 30520 Bolt 4 54 T2002 41110 Piston 2...

Page 8: ...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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