5. Inspection and servicing of basic engine parts
193
5.2.8 Adjustment of valve clearance
(1) Make adjustments when the engine is
cool.
(Refer to 2.2.2(5).)
(2) Valve timing
Be sure that the opening and closing angles
for both the intake and the exhaust valves are
checked when the timing gear is
disassembled (The gauge on the flywheel can
be read.).
The valve timing of the JH4 series engines is
the same.
mm
Intake and exhaust valve clearance 0.15-0.25
deg.
Intake valve Open b.TDC. 10°-20°
Intake valve Closed a.BDC. 40°-50°
Exhaust valve Open b.BDC. 51°-61°
Exhaust valve Closed a.TDC. 13°-23°
001517-02E
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