Zenoah G300PUM, Owner'S Manual, Page: 9 / 24

9
8. Carburetor Adjustment
The carburetor is provided with 3 adjust screws 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-running.
Standard opening of each needle as follows;
Low Speed needle High Speed needle
Idle Screw
H L
1
5
/
8
±
1
/
4
1
1
/
8
±
1
/
4