6 - 7
CARB
CARBURETOR
●
If either is worn, replace them both.
●
If both are fine, adjust the float height by
bending the float tang
1
on the float.
●
Recheck the float height.
*****************************************************
ADJUSTING THE FUEL LEVEL
1.Measure:
●
Fuel level
a
Out of specification
→
Adjust.
*****************************************************
Measurement and adjustment steps:
●
Place the machine on a level surface.
●
Connect the fuel level gauge
1
to the drain
pipe
2
.
●
Loosen the drain screw
3
.
●
Hold the gauge vertically next to the float
chamber line.
●
Measure the fuel level
a
with the gauge.
●
If the fuel level is incorrect, adjust the fuel
level.
●
Remove the carburetor.
●
Inspect the valve seat and needle valve.
●
If either is worn, replace them both.
●
If both are fine, adjust the float level by bend-
ing the float tang
4
slightly.
●
Install the carburetor.
●
Recheck the fuel level.
*****************************************************
Fuel level:
4.5 mm (0.18 in)
Above the float chamber mating
surface
Fuel level gauge:
P/N. YM-01312-A, 90890-01312
Summary of Contents for YFM660FS
Page 1: ...LIT 11616 17 14 5KM 28197 E2 YFM660FS SUPPLEMENTARY SERVICE MANUAL ...
Page 17: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN PRINTED IN U S A ...
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Page 72: ...YFM660FP SERVICEMANUAL LIT 11616 15 01 5KM 28197 E0 ...
Page 117: ...2 11 SPEC MAINTENANCE SPECIFICATIONS Item Standard Cylinder head tightening sequence ...
Page 417: ...9 3 ELEC CHECKING THE SWITCH ...
Page 478: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN PRINTED IN U S A ...