TOHATSU V20E - Page 81

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TROUBLESHOOTING
Trouble
Cause
Vacuum pressure defective Air leaking Water suction failure Insufficient ,water discharge Floodlight, Gauge lamp, do not work
Action
Caused by suction Caused by Pump unit Caused by Playpipe Caused by Engine unit
Pump
Drain valve(s) are
not closed
● ● ● Close securely.
Suction port strainer
clogged with dead
leaf or waste etc.
● ● Clean out.
Discharge valve
imperfect open
● Open securely.
Gauge pipe
connector loose or
gasket defective
● ● ●
Tighten securely.
Replace a gasket if
necessary.
Pump cover bolts
loose
● ● ● ● Tighten securely.
Pump cover O-ring
degradation
● ● Clean out or replace.
Impeller or Guide
vane caught a stone
or damaged
● Clean or replace.
Mechanical seal
damaged
● ● Replace.
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１
２２
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５５
６６
７７
８８
９
９
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