Yamaha TZ250M1 Owner's Service Manual page 27

GEN
INFO
CONTROL FUNCTIONS
EC15Y000
INDUCTION BOX INTAKE SYSTEM
The induction boxes 1 and induction guides
2 are provided for the purpose of applying
pressure inside the carburetor float chamber
and thereby improving the intake performance.
If the machine is run without them, the carbu-
retor settings will become faulty.
NOTE:
Be sure to fix the induction guides with band 3
or hooks 4 so that they do not come off by
wind pressure while running.
EC15Z000
FUEL PUMP
The fuel pump 1, is provided in order to pro-
vide steady supply of fuel even when the pres-
sure inside the carburetor float chamber
becomes higher than inside the fuel tank
because of the induction box intake system.
If the fuel level is not up to the specified level
in the float chamber, this pump is activated
(with an operation sound) and stops operating
when the specified level is reached.
C C CAUTION:
Do not idle run the fuel pump with no fuel
flowing as when the fuel tank is empty or
when the fuel cock is "OFF". It may damage
the fuel pump.
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