Assembling The Crankcase - Yamaha YZ 2020 Series Owner's Service Manual

EAM30152

ASSEMBLING THE CRANKCASE

1. Install:
• Oil seal "1"
New
(to left crankcase)
Installed depth "a"
4.5–5.0 mm (0.18–0.20 in)
1
a
2. Install:
• Bearing cover plate
Bearing cover plate
12 N·m (1.2 kgf·m, 8.9 lb·ft)
LOCTITE®
Bearing cover plate (crankshaft)
22 N·m (2.2 kgf·m, 16 lb·ft)
LOCTITE®
TIP
Install the bearing by pressing its outer race par-
allel.
3. Apply:
• Sealant
(to the crankcase mating surface)
Yamaha bond No. 1215
90890-85505
(Three bond No.1215®)
4. Install:
• Oil nozzle "1"
Oil nozzle
5 N·m (0.5 kgf·m, 3.7 lb·ft)
LOCTITE®
• Dowel pin "2"
• Crankcase "3"
(to the left crankcase)
Crankcase bolt
12 N·m (1.2 kgf·m, 8.9 lb·ft)
TIP
• Fit the right crankcase onto the left crankcase.
Tap lightly on the case with soft hammer.
• When installing the crankcase, the connecting
rod should be positioned at top dead center
(TDC).
• Tighten the bolts in a crisscross pattern in two
stages, with 1/4 turn each.
LT
5
6
4
5
4
4. 45 mm (1.77 in)
5. 60 mm (2.36 in)
6. 75 mm (2.95 in)
5-69
CRANKCASE
1
2
3
2
6 5
4
4
6