Fuel System - Yamaha F15B Service Manual

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Fuel system

9 Consult this chart after the ignition system has been checked.
Check for water accumulation or
clogging of the fuel filter and
inside the carburetor.
Is there water
or residue?
No
Check the fuel hoses for fuel
leakage by kinks or craks.
Are there any
kinks or fuel
leakage?
No
Check the fuel pump for leakage
or internal damage.
Is there any
leakage or inter-
nal damage?
No
Check the operation of the
carburetor.
Does the
carburetor set-
ting and throttle
link operating
correctly?
Yes
Check the compression pressure.
9-3
Troubleshooting
9 Clean the fuel system from the
Yes
fuel tank to the fuel filter and
carburetor float chamber.
9 Replace any fuel in the
fuel tank with new fuel.
Yes
Correct or replace the faulty
parts.
Yes
Replace the fuel pump.
Disassemble the carburetor and
No
clean the internal parts. Adjust or
replace as necessary.
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