TM RACING 250Fi MX, Use And Maintenance Manual

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4 S T R O K E S 4 S T R O K E S 4 S T R O K E S 4 S T R O K E S
CHECKING FUEL LEVEL (FLOAT HEIGHT)
(450F SMR/SMM - ALL 530F) (A)
To check the float height disassemble the carburettor and remove the
bowl. Overturn the carburettor (upside down) and keep it inclined to
allow the float to rest on the needle valve; it shouldn’t press the spring
with its weight.
In this position use a calibre to measure the distance between the top
of the float and the bowl surface on the carburettor body (see image).
Refer to the Carburettor Settings to know the correct value for your
motorcycle.
If required, adjust the height by slightly bending the float flap (1).
If possible, check the seal and state of wear of the valve taper. If in doubt,
replace the valve and its brass seat.
Reassemble the carburettor bowl, the carburettor itself, and check the
idle speed.
DRAINING CARBURETTOR BOWL
(450F SMR/SMM - ALL 530F)
After every washing or ride in wet environments (river crossings, etc.), the
carburettor bowl should be drained to remove the water in it. Water in the
carburettor bowl may affect functionality. Perform this operation with a
cool engine. Close the fuel tank and place a basin under the carburettor
to catch the leaking fuel. Now open the screw (1) to drain the fuel and
any water. Close the screw, open the fuel tap and check the system seal.
- FUEL IS EASILY FLAMMABLE AND TOXIC. HANDLE THE FUEL WITH CARE.
NEVER OPERATE ON THE FUEL SYSTEM NEAR OPEN FLAMES OR LIT CIGA-
RETTES.
- ALWAYS LET THE ENGINE COOL DOWN FIRST. IMMEDIATELY CLEAN ANY
SPILT FUEL WITH A CLOTH. MATERIALS SOAKED WITH FUEL ARE ALSO EASILY
FLAMMABLE. IF FUEL IS SWALLOWED OR GETS IN THE EYES SEEK MEDICAL
ADVICE IMMEDIATELY.
- DISPOSE OF THE FUEL ACCORDING TO THE STANDARDS IN FORCE IN YOUR
COUNTRY.
DANGER
4.3 ENGINE MAINTENANCE
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