Robin 109 - Easy Troubleshooting; Pump Does Not Run; Pumping Volume is Small; Pump Does Not Self-Prime

11
GB
(1) 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.
(2) 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.
(3) Is the spark plug wet with fuel?
■ Is the fuel cock opened? (Except PTG109)
■ 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 strainer
intake.)
■ In case the engine does not start with well supplied fuel,
try using fresh fuel.
8. EASY TROUBLESHOOTING
1. PUMP DOES NOT RUN .
■ Engine dose not start.
(See 8.-6 “6. WHEN ENGINE DOES NOT START
”)
■ Sticking of impeller (Except PTG208D, 307D)
(Disassemble and clean.)
■ Solid object preventing pump-rod from completing
stroke. (PTG208D, 307D only)
(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.
(Except PTG208D, 307D)
(Consult your nearest dealer.)
■ Debris keeping check valve open.
(PTG208D, 307D only)
(Disassemble and clean.)
■ 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.
(Except PTG208D, 307D)
(Disassemble and clean.)
■ Breakage of rubber diaphragm. (Consult your nearest
dealer) (PTG208D, 307D only)
■ Wear of impeller. (Except PTG208D, 307D)
■ Looseness of suction chamber. (Retighten) (PTG208D,
307D only)
■ Strainer is clogged. (Clean.)
■ Engine speed is too low.
(Consult your nearest dealer.)
3. PUMP DOES NOT SELFPRIME.
■ Suction of air at suction side.
(Except PTG208D, 307D)
(Check piping at suction side.)
■ Insufficient priming water inside pump casing
(Except PTG208D, 307D)
(Prime fully.)
■ Imperfect tightening of drain plug.
(Except PTG208D, 307D)
(Tighten the plugs completely.)
■ Engine speed is too low.
(Except PTG208D, 307D)
(Consult your nearest dealer.)
■ Sucking air from mechanical seal.
(Except PTG208D, 307D)
(Consult your nearest dealer.)
4. DELIVERY HOSE DOES
NOT STAY ON COUPLING.
■ Hose may be kinked or discharge end may be blocked
or clogged.
(PTG208D, 307D only)
(Straighten or clean.)
5. PUMP SUDDENLY STOPS.
■ Solid object preventing pump-rod from completing stroke.
(PTG208D, 307D only)
(Disassemble and clean.)
6. 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
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