Yamaha WR400FM Manuel D'atelier Du Proprietaire page 552

SWINGARM
EC573000
REMOVAL POINTS
EC573200
Bearing
1. Remove:
Bearing 1
NOTE:
Install the bearing by pressing its outer race.
EC574010
INSPECTION
Wash the bearings, bushes, collars, and cov-
ers in a solvent.
EC574111
Swingarm
1. Inspect:
Bearing 1
Bush 2
Free play exists/unsmooth revolution/
rust → Replace bearing and bush as a
set.
2. Inspect:
Oil seal 3
Damage → Replace.
EC574210
Relay arm
1. Inspect:
Bearing 1
Collar 2
Free play exists/unsmooth revolution/
rust → Replace bearing and collar as a
set.
2. Inspect:
Oil seal 3
Damage → Replace.
EC574310
Connecting rod
1. Inspect:
Bearing 1
Collar 2
Free play exists/unsmooth revolution/
rust → Replace bearing and collar as a
set.
2. Inspect:
Oil seal 3
Damage → Replace.
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CHAS