Assembling The Pistons And Cylinder Block - Yamaha F150A Service Manual

Needle bearing attachment 3:
90890-06611
Driver rod L3 4: 90890-06652
3. Install a new oil seal into the oil pump
housing.
General pipe 5:
a = 45 mm (1.77 in)
4. Install a new oil seal 6 and the gasket
7, and then tighten the screws 8 to the
specified torque.
63P3F11
Screw 8:
4 N·m (0.4 kgf·m, 3.0 ft·lb)
Assembling the pistons and cylinder
block
1. Install the oil ring 1, second ring 2, and
top ring 3 onto the pistons with the "RN"
mark a of the second ring and the "R"
mark a of the top ring facing upward.
2. Offset the piston ring end gaps as
shown.
1
#5
#4
#3
#2
E
CAUTION:
Do not scratch the pistons or break the
piston rings.
NOTE:
After installing the piston rings, check that
they move smoothly.
Cylinder block
a
45˚ 45˚
#2
#3
UP
63P
#1,#4
#5
2
3
#1
a
S63P5930
5-50
1
2
3
4
5
6
7
8
9