Hisun HS250UTV - Page 99

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MAINTENANCE AND ADJUSTMENT OF THE UTV
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2. Check:
·
valve clearance
·Beyond the standard
Adjust.
Valve clearance (cold)
Intake
0.08 ~ 0.12 mm
(0.0031 ~ 0.0047 in)
Exhaust
0.10 ~ 0.14 mm
(0.0047 ~ 0.0063 in)
3. calibration
adjusting tools ○
A
Spin the crank, when the rotoflex’s scale shows 1,
it is cylinder 1’s timing.
MAINTENANCE AND ADJUSTMENT OF THE UTV
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4. Adjust the valve clearance of cylinder .
valve clearance
① Pin lock nut
② Valve thickness gauge（gap Regulation）
③ Regulator
④ Adjust tools
·
Loosen the locknut .①
· Insert a thickness gauge ② between the adjuste
r
end and the valve end.
·
Turn the adjuster clockwise or counterclockwise③
with the tappet adjusting tool until the prope
r
④
clearance is obtained.
·
in order to avoid adjuster rotating along, fix the lock
nut after finishing
Fixed nut
14 Nm(1.4 m·kgf, 10 ft·lbs)
· Measuring clear
· Measure the clearance of valve with gap gauge.
· If the gap beyond the standard value, repeat the
above steps until the correct gap.
5. Install all removed parts
According to remove the reverse order fo
r
installation
① big hand hole cover
② small hand hole cover
③ timing chain cover
④ exhaust valve cover
⑤ air-intake valve cover
⑥ spark plug
⑦ engine cover board
⑧ passenger seat
⑨ driver seat
Refer to “SEATS” in chapter 5.