ENGINE
6LPA Service Manual
5-7
Specifications
12/05
© 2007 Yanmar Marine International
Piston and
piston ring
Piston diameter
Standard: Mark 1
93.835 to 93.845 mm (3.694 to 3.695 in.)
Standard: Mark 2
93.845 to 93.855 mm (3.6946 to 3.6950 in.)
Standard: Mark 3
93.855 to 93.865 mm (3.6950 to 3.6954 in.)
Piston oil clearance
Standard
0.145 to 0.165 mm (0.0057 to 0.0064 in.)
Limit
0.215 mm (0.0084 in.)
Piston ring groove
clearance
Standard: No. 1
0.050 to 0.095 mm (0.002 to 0.004 in.)
Standard: No. 2
0.060 to 0.100 mm (0.002 to 0.004 in.)
Standard Oil
0.030 to 0.070 mm (0.001 to 0.003 in.)
Limit
0.20 mm (0.008 in.)
Piston ring end gap
Standard: No. 1
0.270 to 0.470 mm (0.011 to 0.018 in.)
Standard: No. 2
0.400 to 0.650 mm (0.016 to 0.025 in.)
Standard Oil
0.200 to 0.500 mm (0.008 to 0.020 in.)
Limit: No. 1
0.85 mm (0.0334 in.)
Limit: No. 2
0.90 mm (0.0354 in.)
Limit Oil
0.88 mm (0.0346 in.)
Item
Description
Specification