TOHATSU EverRun MX 18E2 Service Manual page 208

Power Unit
5-56
4.
c
d
5.
Inspection of Piston Ring Side Clearance
1) Attach a piston ring to piston, and measure piston ring
side clearance. Replace piston ring if the clearance is
over specified value.
Piston Ring Tool :
P/N. 353-72249-0
Piston Ring Side Clearance :
Standard Value :
Top Ring 0.04 - 0.08 mm (0.0016 - 0.0032 in)
Second Ring 0.02 - 0.06 mm (0.0009 - 0.0024 in)
Functional Limit :
c Top Ring
d Second Ring
Inspection of Piston Pin Hole
Measure piston pin hole inner diameter, and replace
piston if the inner diameter is over the limit.
Piston Pin Hole : Standard Value
14.00 mm (0.5512 in)
Functional Limit :
14.04 mm (0.5528 in)
GB
: 0.10 mm (0.0039 in)
: 0.08 mm (0.0031 in)
2st X18E2 2012