FI
THROTTLE BODY
CHECKING THE FUEL PUMP
V
V
V
V
V
WARNING
6-32
Gasoline is extremely inflammable and under
certain conditions can provoke fire or explosion.
Be extremely careful and watch over the
following:
•
Stop the engine before refilling.
•
Do not smoke, and keep yourself away from
open flames, sparks, or any other fire source.
•
If gasoline has been accidentally spilled
down, clean it immediately with a dry cloth.
•
If gasoline get into contact with the engine
while it is hot, there is danger of fire.
Therefore, make sure that the engine has
cooled down totally before proceeding with
the following test:
1. Check:
•
fuel pressure
a. Disconnect the fuel hose from the throttle
body.
Refer to “FUEL TANK” in chapter 3.
Even after the fuel being removed, be careful when
removing the hose: there may be pressurized fuel
into the circuit.
NOTE:
Fuel pressure gauge
90890-03153 / 90890-03176
Fuel pressure
250 kPa (2.5 kg.cm
2
, 36 psi)
b. Connect the fuel pressure gauge
c. Set the main switch to "ON" and the engine stop
to "
".
d. Start the engine.
e. Measure the fuel pressure.
Out of specification
-->
Replace the fuel pump.
Summary of Contents for YBR250 2007
Page 1: ...YBR250 SERVICE MANUAL 5D1 F8197 E0 2007 ...
Page 2: ......
Page 359: ...YAMAHA MOTOR DA AMAZÔNIA LTDA ...
