Checking The Damper; Checking And Replacing The Protector - Yamaha YZ450F Owner's Service Manual

NOTICE
Make sure that the fuel hose is disconnect-
ed by hand. Do not forcibly disconnect the
hose with tools.
d. Connect the pressure gauge "1" and the fuel
pressure adapter "2" to the fuel hose.
Pressure gauge
90890-03153
YU-03153
Fuel pressure adapter
90890-03186
YM-03186
1
e. Start the engine.
f. Measure the fuel pressure.
Out of specification  Replace the fuel
pump.
Fuel line pressure at idling
324.0 kPa (3.24 kgf/cm
psi)
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

CHECKING THE DAMPER

EASB111311
1. Check:
• Damper 1 "1"
• Damper 2 "2"
• Damper 3 "3"
Wear/damage  Replace.
TIP
• Affix dampers 1 and 3 with the arrow on each
damper pointing outward.
• Affix the damper 2 with its projection "a" facing
the rear of the vehicle.
CHECKING AND REPLACING THE PRO-
EASB111312
TECTOR
1. Check:
• Protector "1"
Wear/damage  Replace.
TIP
Affix the protector as shown.
2
A
2
B
, 47.0
A. Left
B. Right
7-4
FUEL TANK
84 mm 115 mm
1
(3.31 in) (4.53 in)
2
84 mm 115 mm
1
(3.31 in) (4.53 in)
0 mm
(0 in)
1
15 mm
(0.59 in)
1
3
a
3
1
1