Exmark 127-9041 - Page 40

Maintenance
4－21
Cylinder Inside Diameter
Measure three points on the “X” and “Y” shaft
and record cylinder inside diameter（“X” shaft is vertical
to crankshaft and “Y” shaft parallel to crankshaft）.
Take maximum reading as the wearing and tapering of
the cylinder.
Model
Standard
Service limit
708 CC
X: 3.0315”-3.0318”
Y: 3.0315”-3.0318”
3.0354”
3.0354”
Piston Skirt Outside Diameter
Measure and record the piston skirt outside diameter
at the 10mm from piston skirt maximum lower side
making 90°to piston pin hole.
Model
Standard
Service limit
708 CC
3.0301”-3.0351”
3.0218”
Piston- to – Cylinder Clearance
Standard
Service limit
0.0009”-0.0017”
0.010”
Piston Ring Side Clearance
Standard
Service limit
Top/
Second
0.0007” – 0.0023”
0.0043”
Piston Ring Width
Standard
Service limit
Top
00382”-0.0390”
0.0354”
Second
0.0460”-0.0468”
0.0433”