Yamaha Fz1n Service Manual

SWINGARM
4-66
8Drive chain 1
9Dust cover 2
10 Drive chain guide 1
11 Spacer 1
12 Bearing 2 For installation, reverse the removal 
procedure.
Removing the swingarm
Order Job/Parts to remove Q’ty Remarks 

SWINGARM
4-67
EAS23350
REMOVING THE SWINGARM
1. Stand the vehicle on a level surface.
WARNING
EWA13120
Securely support the vehicle so that there 
is no danger of it falling over.
NOTE:
Place the vehicle on a suitable stand so that 
the rear wheel is elevated.
2. Remove: Relay arm-to-swingarm bolt “1”
 Connecting arm bolt “2”
 Rear shock absorber assembly lower bolt “3”
NOTE:
When removing the rear shock absorber 
assembly lower bolt, hold the swingarm so that 
it does not drop down.
3. Measure:...

SWINGARM
4-68
5. Check: Connecting arms “1”
 Relay arm “2”Damage/wear  → Replace.
6. Check:  Bearings “3”
 Oil seals “4”Damage/pitting  → Replace.
7. Check:  Collars “5”
Damage/scratches  → Replace.
EAS23380
INSTALLING THE SWINGARM
1. Lubricate:
 Bearings
 Spacers
Dust covers
 Pivot shaft
2. Install:  Swingarm
 Pivot shaft “1”
 Pivot shaft nut “2” 3. Install:
 Rear shock absorber assembly
 Rear wheelRefer to INSTALLING THE REAR SHOCK 
ABSORBER ASSEMBLY on page 4-64 
and INSTALLING THE REAR...

CHAIN DRIVE
4-69
EAS23400
CHAIN DRIVE
Removing the drive chain
Order Job/Parts to remove Q’ty RemarksDrive sprocket Refer to ENGINE REMOVAL on  page 5-2.
1 Drive chain guard 1
2 Drive chain 1 For installation, reverse the removal 
procedure. 

CHAIN DRIVE
4-70
EAS23410
REMOVING THE DRIVE CHAIN
1. Stand the vehicle on a level surface.
WARNING
EWA13120
Securely support the vehicle so that there 
is no danger of it falling over.
NOTE:
Place the vehicle on a suitable stand so that 
the rear wheel is elevated.
2. Remove:Drive chain(with the drive chain cutter)
NOTE:
Only cut the drive chain if it or the swingarm is 
to be replaced.
EAS23440
CHECKING THE DRIVE CHAIN
1. Measure:
 Measure the dimension between 15-links on the inner side “a” and...

CHAIN DRIVE
4-71
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
4. Check: O-rings “1”
Damage  → Replace the drive chain.
 Drive chain rollers “2” Damage/wear  → Replace the drive chain.
 Drive chain side plates “3”
Damage/wear  → Replace the drive chain.
Cracks  → Replace the drive chain and 
make sure the battery breather hose is 
properly routed away from the drive chain 
and below the swingarm.
5. Lubricate:  Drive chain
EAS23460
CHECKING THE DRIVE SPROCKET
1. Check:  Drive sprocket
More than 1/4 tooth “a” wear...

5
ENGINE
ENGINE REMOVAL...................................................................................... 5-2
INSTALLING THE ENGINE .................................................................... 5-8
CAMSHAFTS .............................................................................................. 5-10
REMOVING THE CAMSHAFTS ........................................................... 5-12
CHECKING THE CAMSHAFTS ........................................................... 5-13
CHECKING THE...

CHECKING THE FRICTION PLATES .................................................. 5-49
CHECKING THE CLUTCH PLATES..................................................... 5-49
CHECKING THE CLUTCH SPRINGS .................................................. 5-50
CHECKING THE CLUTCH HOUSING ................................................. 5-50
CHECKING THE CLUTCH BOSS ........................................................ 5-50
CHECKING THE PRESSURE PLATE .................................................. 5-50...

CHECKING THE TRANSMISSION ...................................................... 5-91
INSTALLING THE TRANSMISSION..................................................... 5-92 

ENGINE REMOVAL
5-2
EAS23710
ENGINE REMOVAL
Removing the drive sprocket
Order Job/Parts to remove Q’ty Remarks1Locknut 2
2 Shift rod 1
3 Shift arm 1
4 Drive sprocket cover 1
5 Drive sprocket nut 1
6 Lock washer 1
7 Drive sprocket 1
8Plate 1 For installation, reverse the removal 
procedure.