Check The Valve Clearance - Hisun HS500ATV Maintenance Manual

Preheat the engine, then misfire and unplug the spark
plug.Fix pressure gauge into the hole.
Note: Giving a leakage check to the pressure gauge.
Rotate the engine until the pressure gauge stop rising.
The maximum reading would be greater than0.7- 0.9Mpa
after starting for 4-6
times. See figure 2-1.
Figure 2-1

Check the valve clearance

Note:when adjust valve clearance,the engine must be
cooled.(The tempreture should be less than 35℃ )
Remove the seat cushion and fuel tank,unplug the vision hole
cover ,round the flywheel of magneto anti-clockwise to aim "T"
at the signal of fore cover on the left.
Note: The piston must be fixed to the top dead enter
.
(Figure 2-2)
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