2007 YAMAHA WR 450F engine

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Page 218 of 794

YAMAHA WR 450F 2007  Notices Demploi (in French) 3 - 10
INSP
ADJ
THROTTLE CABLE ADJUSTMENT
2. Adjust:
Clutch lever free play
NOTE:
Make minute adjustment on the lever side
using the adjuster 3.
After adjustment, check proper operation of
clutch l

Page 222 of 794

YAMAHA WR 450F 2007  Notices Demploi (in French) 3 - 12
INSP
ADJ
AIR FILTER CLEANING
AIR FILTER CLEANING
NOTE:
Proper air filter maintenance is the biggest key
to preventing premature engine wear and
damage.
CAUTION:
Never run the engine without the

Page 224 of 794

YAMAHA WR 450F 2007  Notices Demploi (in French) 3 - 13
INSP
ADJ
CAUTION:
Do not twist the element when squeezing
the element.
Leaving too much of solvent in the ele-
ment may result in poor starting.
5. Inspect:
Air filter element
Damage → Rep

Page 226 of 794

YAMAHA WR 450F 2007  Notices Demploi (in French) 3 - 14
INSP
ADJ
ENGINE OIL LEVEL INSPECTION
ENGINE OIL LEVEL INSPECTION
1. Stand the machine on a level surface.
NOTE:
When checking the oil level make sure that
the machine is upright.
Place the ma

Page 228 of 794

YAMAHA WR 450F 2007  Notices Demploi (in French) 3 - 15
INSP
ADJ
ENGINE OIL LEVEL INSPECTION
(For USA and CDN)
CAUTION:
Do not add any chemical additives.
Engine oil also lubricates the clutch and
additives could cause clutch slippage.
Do not allo

Page 230 of 794

YAMAHA WR 450F 2007  Notices Demploi (in French) 3 - 16
INSP
ADJ
ENGINE OIL REPLACEMENT
6. Idle the engine more than 10 seconds
while keeping the machine upright. Then
stop the engine and add the oil to the maxi-
mum level.
7. Install:
Oil tank plu

Page 232 of 794

YAMAHA WR 450F 2007  Notices Demploi (in French) 3 - 17
INSP
ADJ
ENGINE OIL REPLACEMENT
4. If the oil filter is to be replaced during this
oil change, remove the following parts and
reinstall them.
5. Install:
Gaskets
Oil filter drain bolt
Drain

Page 234 of 794

YAMAHA WR 450F 2007  Notices Demploi (in French) 3 - 18
INSP
ADJ
IDLE SPEED ADJUSTMENT
9. Check:
Oil pressure
Checking steps:
Slightly loosen the oil gallery bolt 1.
Start the engine and keep it idling until oil
starts to seep from the oil galler