Hisun HS800UTV - Page 148

ENGINE
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5). Checking the cylinder head
(1). Eliminate:
•
carbon deposits (from the combustion
chamber)
Use a rounded scraper.
NOTE:
Do not use a sharp instrument to avoid
damaging or scratching:
• spark plug threads
• valve seats
(2). Check:
• cylinder head
Scratches/damage
Replace the cylinde
r
head cover and cylinder head as a set.
• cylinder head water jacket
Mineral deposits/rust
Eliminate.
2、INSTALL
1). Installing the cylinder head
• cylinder head gasket
• cylinder head
• bolts (M9: 1 ~ 6, 38Nm)
• bolts (M6: 7, 10Nm)
NOTE:
• Tighten the bolts in the proper sequence.
• Follow the numerical order shown in the
illustration. Tighten the bolts in two stages.
• timing chain guide (exhaust side)
• timing chain tensioner
a. Lightly press the timing chain tensioner rod
into the timing chain tensioner housing by
hand.
b. While pressing the timing chain tensioner rod,
wind it clockwise with a thin screwdriver ①
until it stops.
c. With the screwdriver still inserted into the
timing chain tensioner, install the timing chain
tensioner and gasket onto the cylinder block.
Then, tighten the timing chain tensioner bolts
to the specified torque.