MAINTENANCE INFORMATION
Power Unit
Item Description
Item
Description
Intake 0.10±0.02mm
Cylinder
Head
Warp limit
0.1mm
Valve
clearance
(cold)
Exhaust
0.10±0.02mm
Bore
59.00~59.02mm
Intake 1.84~2.26mm
Wear limit
59.1mm
Face width
Exhaust
1.84~2.26mm
Taper limit
0.08mm
Intake
0.6~0.8mm
Cylinder
Out of round limit
0.05mm
Seat width
Exhaust
0.6~0.8mm
Piston diameter
58.950~58.965mm
Intake
0.7mm
Measuring point
height
10mm (from the
bottom of piston
）
Margin
thickness
Exhaust
1.0mm
Piston-to-cylinder
clearance
0.035~0.065mm Intake
23.9~24.1mm
Piston
Pin boss inside
diameter
13.009~13.017mm
Head
diameter
Exhaust
21.9~22.1mm
Piston pin outside diameter
12.995~13.000mm
Intake 5.475~5.490mm
Thickness
1.5mm
Stem outside
diameter
Exhaust
5.460~5.475mm
Breadth
2.6mm
Intake
End gap
0.10~0.20mm
Guide inside
diameter
Exhaust
5.500~5.512mm
Wear limit
0.40mm
Intake 0.010~0.037mm
T
op ring
Side clearance
0.04~0.08mm
Va
lv
e
Stem to
guide
clearance
Exhaust
0.025~0.052mm
Thickness
1.5mm
Push rod runout limit
0.5mm
Breadth
2.6mm
Free length
35.0mm
End gap
0.25~0.40mm
Free length limit
34.0mm
Wear limit
0.60mm
Va
lv
e
spring
Tilt limit
1.2mm
2nd ring
Side clearance
0.02~0.06mm
Small end inside
diameter.
13.006~13.02mm
Thickness 2.5mm
Connecting
ro
d
Big end oil
clearance
0.016~0.046mm
Breadth
2.6mm
Crankshaft width
64.4~64.5mm
End gap
0.20~0.70mm
Big end side
clearance
0.2~0.6mm
Piston ring
Oil ring
Wear limit
0.90mm
Crankshaft
Round limit
0.03mm
10
https://www.boat-manuals.com/
