Valves And Valve Springs Removal; Valve And Valve Springs Inspection - Linhai 2004 ATV 260 Service Manual

CHAPTER 3A ENGINE

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:
2. Measure:
Runout (valve stem )
Out of specification → Replace.
3. Measure:
Free length (valve spring)
Out of specification → Replace.
Valve spring free length:
Inner spring:
Outer spring:
260/ 300 / 400 cc
Intake:
5.975-5.990mm
<Limit: 5.94mm>
Exhaust:
5.960-5.975mm
<Limit: 5.92mm>
Runout limit:
0.01 mm
38.1 mm
<Limit: 36.1mm>
36.93 mm
<Limit: 35.0mm>
ATV SERVICE MANUAL09.0
CHAPTER 3 ENGINE PAGE. 3A- 30