2006 YAMAHA TTR50 seat adjustment

3 - 4
INSPADJ
ENGINE/THROTTLE CABLE ADJUSTMENT
EC350000
ENGINE
THROTTLE CABLE ADJUSTMENT
1. Check:
Throttle grip free play a
Out of specification → Adjust.
Throttle grip free play
a:
3 ~ 5 mm (0.12 ~ 0.20 in)
2. Adjust:
Throttle grip free play
Throttle grip free play adjustment steps:
Carburetor side
NOTE:
Before adjusting the throttle cable free play,
the engine idle speed should be adjusted.
 Remove the seat assembly and air scoop
(right).
Refer to “FRONT FENDER, SEAT
ASSEMBLY AND FUEL TANK ” section in
the CHAPTER 4.
 Pull back the adjuster cover.
 Loosen the locknut 1 on throttle cable.
 Turn the adjuster 2 in or out until the
specified free play is obtained.
Turning in b → Free play is increased.
Turning out c → Free play is decreased.
 Tighten the locknut.
 Slide the adjuster cover to its original posi-
tion.
 Install the seat assembly and air scoop
(right).
NOTE:
If the specified throttle cable free play can-
not be obtained on the carburetor side of the
cable, use the adjusting nut on the handle-
bar side.
WARNING
After adjusting, turn the handlebar to
right and left and make sure that the
engine idling does not run faster.
c
b
1
2

3 - 6
INSPADJ
 Tighten the locknut.
WARNING
Particularly for a beginner rider, the
speed limiter should be screwed in
completely. Screw it out little by little as
their riding technique improves. Never
remove the speed limiter for a begin-
ning rider.
 For proper throttle lever operation do
not turn out the adjuster more than
25.0 mm (0.98 in). Also, always adjust
the throttle lever free play to 3 ~ 5 mm
(0.12 ~ 0.20 in).
AIR FILTER CLEANING
NOTE:
Proper air filter maintenance is the biggest key
to preventing premature engine wear and
damage.
CAUTION:
Never run the engine without the air filter
element in place; this would allow dirt and
dust to enter the engine and cause rapid
wear and possible engine damage.
1. Remove: Seat assembly
 Air scoop (left)
Refer to “FRONT FENDER, SEAT
ASSEMBLY AND FUEL TANK ” section in
the CHAPTER 4.
 Air filter case cover 1
 Air filter element
1
SPEED LIMITER ADJUSTMENT/AIR FILTER CLEANING

4 - 8
ENGCARBURETOR
Float height
1. Measure:Float height a
Out of specification → Adjust.
Float height:
18.5 mm (0.73 in)
Measurement and adjustment steps:
 Hold the carburetor in an upside down
position.
NOTE:
Slowly tilt the carburetor in the opposite
direction, then take the measurement
when the needle valve aligns with the float
arm.
 If the carburetor is level, the weight of the
float will push in the needle valve, resulting
in an incorrect measurement.
 Measure the distance between the mating
surface of the float chamber and top of the
float using a vernier calipers.
NOTE:
The float arm should be resting on the nee-
dle valve, but not compressing the needle
valve.
If the float height is not within specification,
inspect the valve seat and needle valve.
 If either is worn, replace them both.
 If both are fine, adjust the float height by
bending the float tab b on the float.
 Recheck the float height.
a
b
EC464600
Float
1. Inspect:
Float 1
Damage → Replace.
1