Yanmar 2YM15 - Adjustment of Valve Clearance

5. Inspection and servicing of basic engine parts
115
5.2.8 Adjustment of valve clearance
(1) Make adjustments when the engine is cool.
(Refer to 2.2.2(8).)
(2) 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.).
mm
Intake and exhaust valve clearance 0.15-0.25
deg.
Intake valve Open b.TDC. 7-17
Intake valve Closed a.BDC. 35-45
Exhaust valve Open b.BDC. 35-45
Exhaust valve Closed a.TDC. 7-17
T.D.C.
Exhaust 232
Intake 232
B.D.C.
7-17
35-45
35-45
7-17