Valve Spring; Camshaft - Jianshe JS125-6B Maintenance Manual

Valve spring

1. Measurement
Free length (valve spring)
Standard:32.28mm Limit:31.90mm
Out of specification
2. Check
Valve spring verticality
Side angle limit
3. Check
Valve spring contact surface
More than 2/3 of peripheral region is horizontal con-
tact Replace

Camshaft

1. Cam heave
Pit corrosion, scratching, bluing
2. Measurement
Cam heave A and B
70
Valve spring free length:
Replace
: 1.2 mm
Replace
ENGINE