Yamaha MTN1000 2016 Service Manual page 360

TIP
• Apply engine oil onto the piston pin.
• Make sure that the "Y" mark "a" on the connect-
ing rod faces left when the punch mark "b" on
the piston is pointing up as shown.
• Make sure that the clip ends "c" are positioned
away from the cutout "d" in the piston as shown
in the illustration.
• Reinstall each piston into its original cylinder.
2
3
4
c
5. Lubricate:
• Piston
• Piston rings
• Cylinder
(with the recommended lubricant)
Recommended lubricant
Engine oil
6. Offset:
• Piston ring end gaps
a b
1
d
CONNECTING RODS AND PISTONS
b,e
a. Top ring
b. 2nd ring
c. Upper oil ring rail
d. Oil ring expander
e. Lower oil ring rail
A. Exhaust side
7. Lubricate:
• Crankshaft pins
• Connecting rod big end bearing inner surface
and side surface
(with the recommended lubricant)
Recommended lubricant
8. Install:
• Piston assemblies "1"
(into the cylinder "2")
TIP
• While holding the piston rings with the hand, in-
stall the piston assembly into the cylinder from
underneath.
• Install the piston assembly into the cylinder so
that the piston ring end gap is aligned with the
cylinder skirt "a".
9. Install:
• Cylinder gasket
• Dowel pins
• Cylinder assembly
• Connecting rod caps
• Connecting rod bolts
5-77
d
Engine oil
New
a,c
1
a
2