2008 YAMAHA TTR50 engine

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Page 47 of 78

YAMAHA TTR50 2008  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
6 2. Tap the tailpipe lightly, and then
use a wire brush to remove any
carbon deposits from the spark ar-
rester portion of the tailpipe and in-
side of the

Page 48 of 78

YAMAHA TTR50 2008  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-11
6
EAU21360
Adjusting the engine idling 
speed The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in th

Page 49 of 78

YAMAHA TTR50 2008  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-12
6 2. To increase the throttle cable free
play, turn the adjusting nut in direc-
tion (a). To decrease the throttle
cable free play, turn the adjusting
nut in

Page 55 of 78

YAMAHA TTR50 2008  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-18
6 2. To tighten the drive chain, turn the
adjusting nut at each end of the
swingarm in direction (a). To loos-
en the drive chain, turn the adjust-
ing nut a

Page 56 of 78

YAMAHA TTR50 2008  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6
EAU23013
Cleaning and lubricating the 
drive chain The drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance an

Page 59 of 78

YAMAHA TTR50 2008  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-22
6
CAUTION:
ECA10590
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-pair it.
EAU23280
Checking the steer

Page 62 of 78

YAMAHA TTR50 2008  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6
EAU42020
Replacing the fuse The fuse is located inside the battery
coupler.
If the fuse is blown, replace it as fol-
lows.
1. Turn the key to “OFF” and

Page 67 of 78

YAMAHA TTR50 2008  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-30
6
EAU25901
Troubleshooting chart 
WARNING
EWA10840
Keep away open flames and do not smoke while checking or working on the fuel system.
Check the fuel level
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