TOHATSU V20E - Pump Component Issues

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TROUBLESHOOTING
Trouble
Cause
Battery Charging failure Starter motor does not work Engine start failure Engine stumble or stall Rough idling Idling is too high Poor acceleration Engine over-rev. Engine overheat Engine seizing
Action
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
３３
４４
５５
６６
７７
８８
９
９
10
10
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