2007 YAMAHA TTR90 torque

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Page 40 of 82

YAMAHA TTR90 2007  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
EAU17310
Owner’s tool kit The service information included in this
manual and the tools provided in the
owner’s tool kit are intended to assist
you in t

Page 46 of 82

YAMAHA TTR90 2007  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
62. Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
3. Install the spark plug with

Page 47 of 82

YAMAHA TTR90 2007  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6 To change the engine oil
1. Start the engine, warm it up for
several minutes, and then turn it
off.
2. Place an oil pan under the engine
to collect the used

Page 57 of 82

YAMAHA TTR90 2007  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6 4. If the drive chain slack is incorrect,
adjust it as follows.
EAU40110
To adjust the drive chain slack
1. Loosen the brake pedal free play
adjusting nut,

Page 58 of 82

YAMAHA TTR90 2007  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-20
64. Adjust the brake pedal free play.
(See page 6-17.)
EAU23013
Cleaning and lubricating the 
drive chain The drive chain must be cleaned and
lubricated at t

Page 66 of 82

YAMAHA TTR90 2007  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-28
6
EAU41691
To install the front wheel
1. Lift the wheel up between the fork
legs.
2. Insert the wheel axle from the
right-hand side.NOTE:Make sure that the s

Page 67 of 82

YAMAHA TTR90 2007  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-29
6 2. Remove the brake pedal free play
adjusting nut, and then disconnect
the brake rod at the brake cam-
shaft lever.
3. Loosen the locknut and the drive
cha