Assembling The Carburetor - Yamaha YFM400FAR Service Manual

CARBURETOR
8.Check:
Free movement (piston valve)
G
Sticks → Replace the piston valve guide and
the piston valve.
Insert the piston valve into the carburetor
body, and check for free movement.
9.Check:
Free movement (throttle valve)
G
Sticks → Replace.

ASSEMBLING THE CARBURETOR

CAUTION:
Before reassembling, wash all of the parts
in a clean petroleum-based solvent.
1.Measure:
Float height a
G
Out of specification → Adjust.
Float height (F.H.):
13 mm (0.51 in)
*****************************************************
Measurement and adjustment steps:
G
Hold the carburetor in an upside down
position.
G
Measure the distance from the mating
surface of the
removed) to the top of the float.
NOTE:
The float arm should be resting on the needle
valve, but not compressing it.
G
If the float height is not within the
specification, check the valve seat and
needle valve.
6 - 6
CARB
float chamber (gasket