Yamaha YZ450FP 2023, Owner'S Service Manual

Page: 266 / 388

CRANKCASE
5-70
EAM30641
CHECKING THE OIL STRAINER
1. Check:
•
Oil strainer
Damage

Replace.
Contaminants

Clean with solvent.
EAM30152
ASSEMBLING THE CRANKCASE
1. Install:
• Oil seal “1”
(to the left crankcase)
2. Install:
• Bearing cover plate
TIP
Install the bearing by pressing its outer race par-
allel.
3. Apply:
• Sealant
(to the crankcase mating surface)
4. Install:
•
Oil nozzle 1 “1”
(to the right crankcase)
•
Oil nozzle 2 “2”
(to the left crankcase)
•
Dowel pin “3”
• Gasket “4”
(to the left crankcase)
• Crankcase “5”
(to the left crankcase)
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.
Installed depth “a”
0.0–0.5 mm (0.00–0.02 in)
Bearing cover plate bolt
12 N·m (1.2 kgf·m, 8.9 lb·ft)
LOCTITE®
Bearing cover plate screw (crank-
shaft)
30 N·m (3.0 kgf·m, 22 lb·ft)
LOCTITE®
Yamaha bond No. 1215
90890-85505
Three bond No. 1215®
Ne w
a
1
T
R
.
.
Oil nozzle bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
LOCTITE®
Oil nozzle
0.5 N·m (0.05 kgf·m, 0.37 lb·ft)
Crankcase bolt
12 N·m (1.2 kgf·m, 8.9 lb·ft)
T
R
.
.
T
R
.
.
Ne w
T
R
.
.