HYOSUNG MS3 250 Sercie Manual page 25

● Remove the cylinder head cover.
The valve clearance specification is different for both
intake and exhaust valves.
Valve clearance adjustment must be checked and
adjusted :
1) at the time of periodic inspection,
2) when the valve mechanism is serviced, and
3) when the camshafts are removed for servicing.
● Remove the valve timing inspection plug ① .
● Remove the crankcase cleaner case ② .
NOTE
� � The piston must be at top dead center (TDC)
on the compression stroke in order to check or
adjust the valve clearance.
� � The valve clearance should only be checked
when the engine is cold.
PERIODIC MAINTENANCE 2-8
①
②