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7. EASY TROUBLESHOOTING
1. PUMP DOES NOT RUN .
Engine dose not start.
(See 7.-4 “4. WHEN ENGINE DOES NOT START”)
Sticking of impeller
(Disassemble and clean.)
2. PUMPING VOLUME IS SMALL.
Sucking air at suction side.
(Check piping at suction side.)
Drop off engine output
(Consult your nearest dealer.)
Breakage of mechanical seal.
(Consult your nearest dealer.)
High suction lift (Lower.)
Suction hose is too long or thin.
(Use a thick hose in minimum length.)
Leak of water from water passage.
(Stop leaking.)
Clogging of foreign substance in impeller.
(Disassemble and clean.)
Wear of impeller.
Strainer is clogged. (Clean.)
Engine speed is too low.
(Consult your nearest dealer.)
3. PUMP DOES NOT SELFPRIME.
Suction of air at suction side.
(Check piping at suction side.)
Insufficient priming water inside pump casing
(Prime fully.)
Imperfect tightening of drain plug.
(Tighten the plugs completely.)
Engine speed is too low.
(Consult your nearest dealer.)
Sucking air from mechanical seal.
(Consult your nearest dealer.)
4. WHEN ENGINE DOES NOT START :
Perform the following checks before you take the pump to
your Robin dealer. If you still have trouble after completing
the checks, take the pump to your nearest Robin dealer.
Before testing, carefully wipe off spilled fuel.
Put the plug as far away from the spark plug hole
as possible.
Ground the side of the electrode to any engine
ground.
WARNING
(1) Is the engine switch set OK?
(See Fig.
33
33
3
-
ww
ww
w)
(2) Is there a strong spark across the electrode ?
Remove the spark plug and connect it to the plug cap.
Pull the starter handle while grounding spark plug against
engine body.
Try with a new spark plug if the spark is weak or there is
no spark.
The ignition system is faulty if there is no spark with a
new spark plug.
(3) Is there enough compression?
Pull the starter handle slowly and check if resistance is
felt.
If little force is required to pull the starter handle, check if
the spark plug is tightened firmly.
If the spark plug is loose, tighten it.
(4) Is the spark plug wet with fuel?
Choke (close choke lever) and pull the starter handle five
or six times. Remove the plug and check if its electrode is
wet. If the electrode is wet, fuel is well supplied to your
engine.
When the electrode is dry, check where the fuel stops.
(Check the fuel intake of the carburetor and fuel filter
intake.)
In case the engine does not start with well supplied fuel,
try using fresh fuel.
2003.10.30, 6:51 PMPage 9