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Maintenance
4st 2/2.5/3.5 2007
1. Disconnect plug cap 1 connection, and then, remove spark
plug and cylinder head cover 2.
3
T
a
b
13)
Inspection and Adjustment of Valve Clearances
• Set piston to top dead center of compression
stroke.
• Remove oil filler cap and check that ø5 mm (0.2
in) hole c of cam shaft gear 4 can be seen.
3. Check clearances of intake valve d and exhaust valve e.
Adjust gap if it is out of specified range.
Valve Clearance (when engine is cold) :
(IN) Intake side d : 0.06 - 0.14 mm
(0.0024 - 0.0055 in)
(EX) Exhaust side e : 0.11 - 0.19 mm
(0.0043 - 0.0075 in)
When removing or installing cylinder head cover
without removing power unit, use 10 mm box
wrench with large offset angle.
2. Pull recoil starter 3 to turn flywheel clockwise until flywheel
"T" mark a is brought to flywheel cover "
▲" mark b.
Perform inspection and adjustment of valve
clearances when engine is cold.
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