Yamaha YZ450F(Y Owner's Manual: Exhaust Pipe And Silencer

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CHECKING THE SILENCER AND
EXHAUST PIPE
1. Inspect:
• Gasket "1"
Damage → Replace.
CHANGING THE SILENCER FIBER
1. Remove:
• Rivet (front) "1"
• Inner pipe "2"
Take care not to damage the rivet
fitting holes (ø4.9 mm) "a" in re-
moval.
Pull out the inner pipe while lightly
tapping the stay "b" on the silencer
using a soft hammer.
2. Replace:
• Fiber "1" (Except for USA and
CDN)
3. Replace:
• Fiber "1" (For USA and CDN)
Wrap around the inner pipe the fiber
as is vinyl packaged, then secure it
with pieces of tape "2".

EXHAUST PIPE AND SILENCER

4. Install:
• Inner pipe "1"
• Rivet (front) "2"
• Band "3"
• Apply heat resistant sealant along
the plate edge "a" on the inside of
the silencer and also along the si-
lencer edge "b" as shown.
• Take care not to allow the fiber out
of place when installing the inner
pipe.
• Install the band "3" with the mating
ends "c" positioned as shown.
INSTALLING THE SILENCER AND
EXHAUST PIPE
1. Install:
• Gasket
• Exhaust pipe "1"
• Nut (exhaust pipe) "2"
Nut (exhaust pipe):
20 Nm (2.0 m•kg, 14
ft•lb)
• Bolt (exhaust pipe) "3"
Bolt (exhaust pipe):
20 Nm (2.0 m•kg, 14
ft•lb)
4-4
First, temporarily tighten the nut (ex-
haust pipe), then tighten the bolt (ex-
haust pipe) 13 Nm (1.3 m•kg, 9.4
ft•lb). After that, retighten the nut (ex-
haust pipe) 20 Nm (2.0 m•kg, 14 ft•lb)
and then the bolt (exhaust pipe) 20
Nm (2.0 m•kg, 14 ft•lb).
2. Install:
• Silencer clamp "1"
Silencer clamp:
14 Nm (1.4 m•kg, 10
ft•lb)
• Gasket "2"
• Silencer "3"
• Washer "4"
• Bolt (silencer) "5"
Bolt (silencer):
30 Nm (3.0 m•kg, 22
ft•lb)
• Install the gasket with its meshed
area "a" toward the exhaust pipe
side.
• The gasket should be installed ac-
cording to the dimension shown.
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  • nick Jan 26, 2016 10:47:
    The download is jacked up, so it's only really viewable on the site, but can't really complain since it's free.