Hisun HS700UTV-4 Maintenance Handbook page 155

ENGINE
1、CHECK
1). Checking the rocker arms
• rocker arm lobes ①
• valve adjusters ②
Blue discoloration/pitting/scratches
• rocker arms
• rocker arm shafts
Damage/wear
a. Check whether the rocker arm is worn out, or
damaged and whether the oil hole is blocked.
b. If there is a rocker arm to be replaced, check
the camshaft prominent position of unfairness.
c. Measure the inside diameter of the rocker arm
holes ①.
Out of specification
Rocker arm inside diameter repairing limit
value
Φ12.038mm
d. Check the surface of the rocker arm shafts.
Worn/pitting/scratches
e. Measure the external diameter of rocker arm
shaft with micrometer.
Out of specification
Rocker arm
repairing limit value
Φ11.96mm
f. Calculate the clearance by subtracting the
rocker arm shaft outside diameter from the
rocker arm inside diameter.
Out of specification
part(s).
Rocker arm to shaft clearance repairing
limit value
0.05mm
- 142 -
Replace.
Replace.
Replace.
Replace.
Replace.
shaft outside diameter
Replace the defective