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INSP
ADJ
 
PRE-OPERATION INSPECTION AND MAINTENANCE 
*: Since these items requires special tools data and technical skills, they should be serviced.
* 
1
 
: For USA
SERVICE NOTES:
 
No. 1. DRIVE CHAIN: In addition to tension and alignment, chain must be lubricated every
0.5 ~ 1.0 hour. If unit is subjected to extremely hard usage and wet weather riding, chain
must be checked constantly. See “Lubrication Intervals” for additional details. 
No. 2. AIR FILTER: Remove and clean filter every 20 ~ 40 hours. 
PRE-OPERATION INSPECTION AND MAINTENANCE 
Before riding for break-in operation, practice or a race, make sure the machine is in good operating
condition.
Before using this machine, check the following points. 
GENERAL INSPECTION AND MAINTENANCE  
* Chassis fastenersMake sure that all nuts, bolts and screws are 
properly tightened.
Tighten if necessary. 
SidestandCheck operation.
Lubricate and repair if necessary. 
* Spark arrester 
* 
1
 
Clean. 
* Front forkCheck operation and for oil leakage.
Correct accordingly. 
*Rear shock 
absorber assemblyCheck operation and shock absorber for oil 
leakage.
Replace shock absorber assembly if necessary. 
Battery
(TT-R90E only)Check terminal for corrosion.
Clean if necessary. 
Item Routine Page
Brake Check operation/adjustment. P3-11
Engine oil Change oil as required. P3-5 ~ 7
Drive chain Check alignment/adjustment/lubrication. P3-12 ~ 13
Spark plug Check color/condition. P3-20
Throttle Check for proper throttle cable operation. P3-3
Air filter Foam type – must be clean and damp oil always P3-3 ~ 4
Wheels and tires Check pressure/runout/spoke tightness/bead stopper/axle nuts. P3-14 ~ 15
Fittings/fasteners Check all – tighten as necessary. P2-13 Dealer 
NoteItem Checks and maintenance jobsInitial Every
10 hours 
(1 month)60 hours 
(6 months)120 hours 
(12 months) 
3 
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INSP
ADJ
DRIVE CHAIN SLACK ADJUSTMENT
DRIVE CHAIN SLACK ADJUSTMENT
1. Elevate the rear wheel by placing the
suitable stand under the engine.
2. Check:
Drive chain slack a 
In the center between the drive axle
and rear wheel axle.
Out of specification → Adjust.
NOTE:
Before checking and/or adjusting, rotate the
rear wheel through several revolutions and
check the slack several times to find the tight-
est point. Check and/or adjust chain slack with
rear wheel in this “tight chain” position.
Drive chain slack:
40 ~ 53 mm (1.6 ~ 2.1 in)
3. Adjust:
Drive chain slack
Drive chain slack adjustment steps:
Loosen the wheel axle nut 1 and locknuts
2.
Adjust chain slack by turning the adjusters
3.
To tighten →Turn adjuster 3 clockwise.
To loosen →Turn adjuster 3 counter-
clockwise and push wheel 
forward.
Turn each adjuster exactly the same
amount to maintain correct axle alignment.
(There are marks a on each side of chain
puller alignment.)
NOTE:
Turn the adjuster so that the chain is in line
with the sprocket, as viewed from the rear.
CAUTION:
Too small chain slack will overload the
engine and other vital parts; keep the
slack within the specified limits.
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