Yamaha YZ450FP 2023, Owner'S Service Manual

Page: 93 / 388

ENGINE
3-15
c. Install the new oil filter element and the oil
filter element cover.
8. Install:
•
Engine oil drain bolt (oil tank)
(along with the gasket
)
•
Engine oil drain bolt (crankcase)
(along with the gasket
)
9. Fill:
• Crankcase
(with the specified amount of the recom-
mended engine oil)
10.Install:
• Engine oil filler cap
(along with the O-ring
)
11.Check:
•
Oil level
Refer to “CHECKING THE ENGINE OIL
LEVEL” on page 3-13.
12.Check:
•
Engine oil pressure
a. Start the engine.
WARNING
EWA19130
Always keep the engine idling speed during
the checkup without increasing the engine
speed.
b. Look at the oil level check window “1”, and
then make sure that the engine oil flows
and that the engine oil level decreases.
TIP
Check the engine oil level while the engine is at
idling speed.
NOTICE
ECA26740
If the engine oil level does not decrease after
the engine has been started, immediately
turn the engine off. Otherwise, the engine
could seize.
c. If the engine oil level does not decrease at
the specified level mark, check the engine
oil system for leaks, and the engine oil
passages and oil pump for damage.
d. Check the oil pressure again.
EAM30216
ADJUSTING THE CLUTCH LEVER FREE
PLAY
1. Check:
• Clutch lever free play “a”
Out of specification

Regulate.
2. Adjust:
• Clutch lever free play
Handlebar side
a. Turn the adjuster “1” until the specified
Oil filter element cover bolt
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Engine oil drain bolt (oil tank)
10 N·m (1.0 kgf·m, 7.4 lb·ft)
Engine oil drain bolt (crankcase)
20 N·m (2.0 kgf·m, 15 lb·ft)
Engine oil quantity
Oil change
0.94 L (0.99 US qt, 0.83 Imp.qt)
With oil filter removal
0.96 L (1.01 US qt, 0.84 Imp.qt)
Quantity (disassembled)
1.20 L (1.27 US qt, 1.06 Imp.qt)
1 1
3 3
2 2
T
R
.
.
Ne w
Ne w
T
R
.
.
Ne w
a. Maximum level mark
Clutch lever free play
7.0–12.0 mm (0.28–0.47 in)
a
1
a
a