internal engine components.
Carburetor Adjustment Troubleshooting
Problem:
If The engine hesitates when accelerated rapidly.or The rpm increases at idling. or The
engine stops when the throttle is moved from high to low.
Solution:
The low-speed needle “L ” is too lean. Open it up about 1/8 of a
turn and try again.
Problem:
If The idle is not steady.
Solution:
The low-speed needle “L ” valve is too rich. Close it 1/8 of a turn
and try again.
Problem:
If Engine stops at full throttle.
Or Engine hesitates when accelerated rapidly.
Or The engine will not come up to full rpm at full throttle.
Solution:
The high-speed needle valve “H” is too lean. Open it up 1/8 of
a turn and try again.
Problem:
If Your engine does not reach full rpm.
Or Carbon build-ups appear consistently on your spark plug.
Solution:
The high-speed needle valve “H” is too rich. Close it up 1/8 turn
and try again.
Starting Procedures
When starting the engine the first time and during break-in it’s recommended that you run
the engine without the cowling. Also, for safety reasons do not adjust the carburetor while
the engine is running. There are two recommended ways to start the RCGF 120cc twin:
A. Manual Starting
Note: When hand starting the RCGF 120cc twin, use a thick glove or heavy duty starter
stick to protect your hand.