2004 YAMAHA YZ85 Swingarm

5 - 55
CHAS
2. Install:

Bearing 1

Oil seal 2
To relay arm.
NOTE:

Apply the molybdenum disulfide grease on
the bearing when installing.

Install the bearing by pressing it on the side
having the manufacture’s marks or numbers.
Installed depth of bearings:
Depth a: 4.5 mm (0.18 in)
Depth b: 0.5 mm (0.02 in)
Depth c: 4.0 mm (0.16 in)
5PA51750
5PA51760
c1
3. Install:

Bearing 1

Oil seal 2
To connecting rod.
NOTE:

Apply the molybdenum disulfide grease on
the bearing when installing.

Install the bearing by pressing it on the side
having the manufacture’s marks or numbers.
Installed depth of bearings a:
6.5 mm (0.26 in)
5PA51760
Swingarm
1. Install:

Collar 1
To swingarm 2.
NOTE:
Apply the molybdenum disulfide grease on the
collars, bearings, bushings and oil seal lips.
5PA51770
SWINGARM

5 - 56
CHAS
2. Install:

Bushing 1

Collar 2

Dust seal 3

Cover 4
To relay arm 5.
NOTE:
Apply the molybdenum disulfide grease on the
bushings, dust seals, collars, cover lips, bear-
ings and oil seal lips.
3. Install:

Bushing 1
To connecting rod 2.
NOTE:
Apply the molybdenum disulfide grease on the
bushings, bearings and oil seal lips.
5PAR0025
5PA51790
4. Install:

Connecting rod 1

Washer 2

Bolt (connecting rod) 3

Nut (connecting rod) 4
To swingarm 5.
NOTE:
Apply the molybdenum disulfide grease on the
bolt.
5PA51800
T R..53 Nm (5.3 m · kg, 38 ft · lb)
5. Install:

Relay arm 1

Bolt (relay arm) 2

Nut (relay arm) 3
NOTE:
Apply the molybdenum disulfide grease on the
bolt.
5PA51810
T R..54 Nm (5.4 m · kg, 39 ft · lb)
SWINGARM

5 - 57
CHAS
6. Install:

Swingarm 1

Pivot shaft 2

Washer 3

Nut (pivot shaft) 4
NOTE:

Apply the molybdenum disulfide grease on
the pivot shaft.

Insert the pivot shaft from right side.
7. Check:

Swingarm side play a
Free play exists → Replace collars.

Swingarm up and down movement b
Unsmooth movement/binding/rough spots
→ Grease or replace bearings, bushings
and collars.
5PA51820
T R..63 Nm (6.3 m · kg, 45 ft · lb)
5PA51830
8. Install:

Washer 1

Bolt (rear shock absorber-relay arm) 2
NOTE:

Apply the molybdenum disulfide grease on
the bolt.

Insert the bolt from left side.
5PA51840
T R..36 Nm (3.6 m · kg, 25 ft · lb)
9. Install:

Bolt (connecting rod) 1

Nut (connecting rod) 2
NOTE:
Apply the molybdenum disulfide grease on the
bolt.
5PA51850
T R..53 Nm (5.3 m · kg, 38 ft · lb)
10. Install:

Drive chain support 1

Drive chain support cover 2

Bolt (drive chain support cover) 3

Nut (drive chain support cover) 4

Bolt (drive chain support) 5

Nut (drive chain support) 6
5PAR0026
T R..7 Nm (0.7 m · kg, 5.1 ft · lb)
T R..16 Nm (1.6 m · kg, 11 ft · lb)
SWINGARM

5 - 58
CHASREAR SHOCK ABSORBER
EC580000
REAR SHOCK ABSORBER
5PA51870
Extent of removal:
1 Rear shock absorber removal
2 Rear shock absorber disassembly
Extent of removal Order Part name Q’ty Remarks
Preparation for removalREAR SHOCK ABSORBER
REMOVAL
Hold the machine by placing the
suitable stand under the engine.
WARNING
Support the machine securely so there is no
danger of it falling over.
Seat Refer to “SEAT, FUEL TANK AND SIDE
COVERS” section in the CHAPTER 4.
Silencer Refer to “EXHAUST PIPE AND
SILENCER” section in the CHAPTER 4.
1 Clamp (air cleaner joint) 1 Only loosening.
2Rear frame 1
3 Bolt (rear shock absorber-relay
arm)1 Hold the swingarm.
4 Bolt (rear shock absorber-frame) 1
5 Rear shock absorber 1
6 Locknut 1 Only loosening.
7 Adjuster 1 Only loosening.
8 Spring guide 1
9 Spring (rear shock absorber) 1
1
2