Valve Spring - Yamaha FZR400 1988-1989 Service Manual

INSPECTION AND REPAIR
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Press the valve through the valve guide and
onto the valve seat to make a clear pattern.
the valve seat width is out of specification,
reface and lap the valve seat.

VALVE SPRING

1. Measure:
Valve spring free length @
??
Out of specification --f Replace.
Valve Spring Free Length:
2. Measure:
Valve spring installed force @
??
Out of specification + Replace.
302 006
37.5 mm (1.48 in)
3. Measure:
*Spring Tilt @
Out of specification + Replace.
Spring Tilt:
the valve seat width @ again. If
41.94 mm (1.65 in)
Valve Spring Installed Force:
14.2 - 16.4 kg
(31.3 - 36.2 lb)
Less than 1.8 mm (0.0709 in)
I