Yamaha YZF-R1 98 Service Manual page 398

FUEL PUM P SYSTEM
EB808410
CHECKING THE FUEL PUM P
WARNING
WARNING
Gasoline is extremely flammable and
under certain circumstances there can
be a danger of an explosion or fire. Be
extremely careful and note the follow -
ing points:
• Stop the engine before refuelling.
• Do not smoke and keep aw ay from
open flames, sparks or any other
source of fire.
• If you do accidentally spill gasoline,
w ipe it up immediately w ith dry rags.
• If gasoline touches the engine w hen it
is hot, a fire may occur. Therefore,
make sure that the engine is com-
pletely cool before performing the fol-
low ing test.
1. Check:
• fuel pum p operation
a. Fill the fuel tank.
b. Put the end of the fuel hose into an
open container.
c. Connect the battery (12V) to the fuel
pum p coupler as show n.
Battery positive lead → blue/ black 1
Battery negative lead → black 2
d. If fuel flow s out of the fuel hose, the
fuel pum p is OK. If fuel does not flow ,
replace the fuel pum p.
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