TM RACING 4 Stroke 2009, Руководство пользователя и по обслуживанию

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4
NOTE: If the described methods are followed and satisfying results
are not obtained, the cause could be a Pilot jet with unsuitable
dimensions.
a) If the mix adjustment screw is screwed right down without variation
of the number of revs of the idle speed, a smaller Pilot jet must be
installed.
b) If the engine switches off with the mix adjustment screw still open
by two turns, a larger Pilot jet must be installed. Obviously, after the
jet has been replaced, adjustment must be carried out again from
the beginning.
5 Now, adjust the number of revs. of the idle speed desired using the
adjustment knob.
6 In presence of large variations of external temperature and altitude,
the idle speed must be set again.
To adjust the idle speed mixture screw, a very short screwdriver
may be required. Notches may be useful on the handgrip.
B B B B BASIC INDICA ASIC INDICA ASIC INDICA ASIC INDICA ASIC INDICATIONS REGARDING CARB TIONS REGARDING CARB TIONS REGARDING CARB TIONS REGARDING CARB TIONS REGARDING CARBURET URET URET URET URETOR OR OR OR OR
WEAR WEAR WEAR WEAR WEAR
The throttle valve, jet needle, needle jet (when present) and the float
needle valve are subject to great wear caused by engine vibration. As a
consequence the carburetor may malfunction (e.g. enrichening of the
mixture). These parts must therefore be controlled after 200 hours.
CHECK FUEL LEVEL CHECK FUEL LEVEL CHECK FUEL LEVEL CHECK FUEL LEVEL CHECK FUEL LEVEL
(FL (FL (FL (FL (FLO O O O OA A A A AT HEIGHT) (A) T HEIGHT) (A) T HEIGHT) (A) T HEIGHT) (A) T HEIGHT) (A)
Disassemble the carburetor and remove the float bowl. Turn the
carburetor upside-down and keep it inclined so that the float rests on
the needle valve but does not compress the spring with its weight.
In this position, use a gauge to measure the distance between the
apex of the float body and the float bowl surface on the carburetor body
(see image).
Refer to the technical data for the correct value for your motorcycle.
If necessary, adjust the height by slightly bending the float adjustment
plate (4).
If possible, also check the tightness and the state of wear of the needle
valve cone: if in doubt replace the valve and brass seat.
Mount the float bowl, mount the carburetor and adjust the idle speed.