Checking The Breather Hoses - Yamaha WR450FB 2012 Owner's Service Manual

6. Check:
• Air filter element
Damage Replace.
7. Apply the recommended oil to the entire sur-
face of the air filter element and squeeze out
the excess oil. The air filter element should
be wet but not dripping.
Recommended oil grade
API service SG type or higher,
JASO standard MA
8. Install:
• Air filter element frame "1"
TIP
• Align the projection "a" on air filter element
frame with the hole "b" in air filter element.
• Apply the lithium-soap-based grease on the
matching surface "c" on air filter element.
ECA1DX1002
NOTICE
Never operate the engine without the air fil-
ter element installed. Unfiltered air will
cause rapid wear of engine parts and may
damage the engine. Operating the engine
without the air filter element will also lead-
ing to poor engine performance and possi-
ble overheating.
9. Install:
• Air filter element "1"
TIP
Align the projection "a" on filter guide with the
hole "b" in air filter case.
PERIODIC MAINTENANCE
10.Hook:
• Binder "1"
TIP
Hook the binder "1" so that it contacts the filter
guide projections "a".
11.Install:
• Air filter case cover
• Air filter check hose
EAS1DX3083

CHECKING THE BREATHER HOSES

1. Remove:
• Seat
• Side cover (left/right)
• Air scoop (left/right)
Refer to "GENERAL CHASSIS" on page 5-
1.
• Fuel tank
Refer to "FUEL TANK" on page 8-1.
2. Check:
• Breather hose "1"
Cracks/damage
Loose connection
ECA14920
NOTICE
Make sure the breather hoses are routed
correctly.
3-10
Replace.
Connect properly.