Yamaha XSR 900 2022 Service Manual page 296

7. Lubricate:
• Crankshaft pin
• Connecting rod big end bearing inner surface
(with the recommended lubricant)
Recommended lubricant
Engine oil
8. Install:
• Piston assembly "1"
(into the cylinder "2" and onto the crankshaft
pin)
Piston installing tool
90890-04161
Piston installing tool
YM-04161
ECA21490
NOTICE
If the projection "a" of the piston installing
tool damages, you cannot use it. Please han-
dle with care.
TIP
Fit the projection "a" of the piston installing tool
"3" and blunt-edged part "b" of the cylinder, fix
the position of the piston installing tool, and then
push the piston up to the cylinder.
2
b
1
a
3
3
9. Install:
• Connecting rod cap
• Connecting rod bolt
TIP
• Make sure the "Y" marks "a" on the connecting
rods face towards the left side of the crank-
shaft.
• Make sure that the projection "b" on the con-
necting rod cap faces the same direction as the
"Y" mark "a" on the connecting rod.
• Apply Molybdenum disulfide oil to the bolt
threads and seats.
CONNECTING RODS AND PISTONS
10.Tighten:
TIP
Tighten the connecting rod bolts using the fol-
lowing procedure.
2
1
5-79
• Connecting rod bolt
a. Tighten the connecting rod bolts with a
torque wrench.
Connecting rod bolt (1st)
20 N·m (2.0 kgf·m, 15 lb·ft)
b. Put a mark "1" on the corner of the connect-
ing rod bolt "2" and the connecting rod cap
"3".
c. Tighten the connecting rod bolts further to
reach the specified angle 180°.
Connecting rod bolt (final)
Specified angle 180°
180˚