Table of Contents
EAS25660
ASSEMBLING THE CRANKCASE
1. Lubricate:
• Crankshaft journal bearings
(with the recommended lubricant)
Recommended lubricant
Engine oil
2. Apply:
• Sealant
(onto the crankcase mating surfaces)
Yamaha bond No. 1215
(Three bond No.1215
90890-85505
NOTE:
Do not allow any sealant to come into contact
with the oil gallery or crankshaft journal bear-
ings. Do not apply sealant to within 2–3 mm of
the crankshaft journal bearings.
3. Install:
• Dowel pin
4. Set the shift drum assembly and transmis-
sion gears in the neutral position.
5. Install:
• Lower crankcase "1"
(onto the upper crankcase "2")
ECA13980
CAUTION:
Before tightening the crankcase bolts,
make sure the transmission gears shift cor-
rectly when the shift drum assembly is
turned by hand.
6. Install:
®
)
NOTE:
• Lubricate the bolt threads with engine oil.
• Install a washer on bolts "1"–"10"
• Seal bolt "18"
• Tighten the bolts in the tightening sequence
5-58
• Crankcase bolts
cast on the crankcase.
M8 × 85 mm (3.3 in) bolts: "1"–"7", "10"
M8 × 115 mm (4.5 in) bolts: "8", "9"
M8 × 65 mm (2.6 in) bolts: "11", "12"
M6 × 65 mm (2.6 in) bolts: "13", "14"
M6 × 55 mm (2.2 in) bolts: "15", "22"–"26"
M6 × 45 mm (1.8 in) bolts: "16", "19", "20"
M6 × 65 mm (2.6 in) bolts: "17", "27"
M6 × 75 mm (3.0 in) bolt: "18" LOCTITE®
M6 × 100 mm (3.9 in) bolt: "21"
Crankcase bolt
Bolt "1"–"10"
1st: 12 Nm (1.2 m·kg, 8.7 ft·lb)
2nd: 25 Nm (2.5 m·kg, 18 ft·lb)
3rd*: 27 Nm (2.7 m·kg, 20 ft·lb)
Bolt "11", "12"
24 Nm (2.4 m·kg, 17 ft·lb)
Bolt "13", "14"
14 Nm (1.4 m·kg, 1.0 ft·lb)
Bolt "15"–"27"
12 Nm (1.2 m·kg, 8.7 ft·lb)
*Loosen the bolts following the tightening
order and then tighten to specification
torque.
CRANKCASE
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