height adjustment YAMAHA TT600RE 2004 Service Manual

CARBURETOR ASSEMBLY
6-14
CARB
10. Install:
•Float pin (1)
NOTE:
Assemble the float pin in the opposite direction to
the arrow.
11. Measure:
•Float height (a)
Out of specification ➔Adjust.
Float height: 27.0 - 29.0 mm
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Measurement and adjustment:
•Hold the carburetor upside down.
•Measure the distance from the joint plane of
the float chamber (without the gasket) and the
top of the float.
NOTE:
The float arm must rest on the neeedle valve
without being pressed.
•If the float height is out of tolerance, check the
valve seat and the needle valve.
•If either is worn, replace both.
•If both are perfect, adjust the float height by
bending the wing tab of the float itself (1).
•Recheck the float height.
12. Install:
•Float chamber
Screw (float chamber): 2 Nm (0.2 mkg)
13. Adjust:
•Pilot air screw (1)
Adjustment:
•Turn the screw until it is slightly locked.
•Unscrew by 3 and 1/2 turns.
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CARBCARBURETOR ASSEMBLY
6-15
14. Install:
•Primary carburetor
•Secondary carburetor
15. Install:
•Support plate (front) (1)
•Support plate (rear) (2) Screw (support plate): 3.5 Nm (0.35 mkg)
16. Adjust:
•Synchronisation of secondary carburetor
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Adjustment:
•Move the primary throttle valve (1) to a height
of 7.0 mm as shown in the figure.
•Tighten or loosen the synchronisation screw
(1) until the secondary throttle valve (2) starts
to open.
•Check that the secondary throttle valve is
open horizontally (a)=(b) when the primary
throttle valve is completely open
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CARBURETOR ASSEMBLY
6-16
CARB
FUEL LEVEL ADJUSTMENT (CARBURE-
TOR INSTALLED
1. Place the motorcycle on a level surface.
2. Make sure that the carburetor is in a horizon- tal position by placing a hydraulic jack under
the engine.
Fuel level gauge: P/N. 90890-01312
4. Loosen drain screw (2) and heat the engine.
5. Measure:
•Fuel level (a)
Out of specification ➔Adjust.
Fuel level: 6.0 ~ 8.0 mm
Under the edge of the carburetor
body.
6. Adjust:
•Fuel level
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Fuel level adjustment:
•Remove carburetor assembly.
•Inspect valve seat and needle valve set.
•If either of the two is worn, replace both.
•If both are perfect, adjust float height by bend-
ing the wing tab of the float itself (1).
•Recheck the fuel level.
3. Connect the fuel level gauge (1) to the carbu- rettor nipple.
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