Fuel System - TOHATSU MFS 9.9 Owner's Manual

Check air vent screw of
fuel tank.
Is air vent
screw open?
YES
Check if fuel contain water
or fuel filter is clogged.
Does fuel contain
water, or is fuel
filter clogged?
YES
Clean fuel tank.
Flush fuel system.
4st 9.9/15/20 2008

Fuel System

NO
Check fuel hose for bend or
fuel leak.
Is fuel hose bent or
does fuel leak from
the hose?
Replace defective
part with new one.
（State 1 : Engine will not start.）
NO
Open air vent screw.
NO
Check carburetor.
YES
9
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