Linhai ARCHON 400, Service Manual

Page: 52 / 218

CHAPTER 3 ENGINE
BUCK 450 SERVICE MANUAL 20.0
VALVES AND VALVE SPRINGS REMOVAL
1. Remove:

Valve cotters

NOTE:
Attach a valve spring compressor and attachment

between the valve spring retainer and cylinder
head to remove the valve cotters.
CAUTION:
Do not compress so much as to avoid damage to
the valve spring.
VALVE AND VALVE SPRINGS INSPECTION
1. Measure:

Valve stem diameter
Out of specification
→
Replace.
Valve stem diameter:
Intake:
5.975-5.990mm
<Limit: 5.94mm>
Exhaust:
5.960-5.975mm
<Limit: 5.92mm>
2. Measure:

Runout (valve stem )
Out of specification
→
Replace.

Runout limit:
0.01 mm
3. Measure:

Free length (valve spring)
Out of specification
→
Replace.
Valve spring free length:
Inner spring:
38.1 mm
<Limit: 36.1mm>
Outer spring:
36.93 mm
<Limit: 35.0mm>
CHAPTER 3 ENGINE PAGE. 3- 27