Checking The Fuel Line; Checking The Engine Oil Level - Yamaha YZ450F Owner's Service Manual

2
4
4. Install:
• Exhaust pipe protector
Exhaust pipe protector screw
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
LOCTITE®
EAS1SL5085

CHECKING THE FUEL LINE

1. Remove:
• Seat
• Side cover (left/right)
• Air scoop (left/right)
Refer to "GENERAL CHASSIS" on page 4-
1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
2. Check:
• Fuel hose "1"
Crack/damage  Replace.
Loose connection  Connect properly.
3. Install:
1

CHECKING THE ENGINE OIL LEVEL

EAS1SL5086
1. Stand the vehicle upright on a level surface.
2. Start the engine, warm this up for 2–3 min-
3. Check:
3
ECA33DD018
NOTICE
• Since engine oil also lubricates the clutch,
• Do not allow foreign material to enter the
1
3-14
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Air scoop (left/right)
• Seat
• Side cover (left/right)
Refer to "GENERAL CHASSIS" on page 4-
1.
utes, and then stop the engine and wait
about 1 minute.
• Oil level
Make sure that the engine oil level is above
the minimum level mark "a" shown for the oil
level check window "1", and that the engine
oil does not come out by removing the oil
check bolt "2".
The minimum level mark "a" or below  Add
the engine oil until its level exceeds the min-
imum level mark "a".
Engine oil coming out of the oil check bolt 
Drain it until its last drop is out.
1
2
the wrong oil types or additives could
cause clutch slippage. Therefore, do not
add any chemical additives.
crankcase.
Recommended brand
YAMALUBE
Recommended engine oil type
SAE10W-30, SAE10W-40,
SAE10W-50, SAE15W-40,
SAE20W-40 or SAE20W-50
Recommended engine oil grade
API service SG type or higher,
JASO standard MA
ENGINE
a