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Engine noisy or knocking
� Engine stops while running
Trouble
Engine stops suddenly
The engine stops slowly
� Engine hard to stop
Trouble
Cylinder and piston overheat
Engine
conduce to self-ignition
1.
Correlative
circuit
2.
� Trouble and remedy of pump
Trouble
1.
2.
junction loosened make the suction hose
suck in air
3.
sucked in
Cannot self-suck
4. The valve connected on the discharge side
is closed or doubled
5.
incorrect
6. The pump clogged by foreign body
1.
2.
3.
Water outlet is
insufficient,
4.
and pressure is
5.
too low
high
Can
not pull the 1.
starter
2.
1. Mechanical seal wore out
Leaking water
2. O-sealing ring of pump shaft damaged
2.
1.
2.
3.The running parts wore and tore
Cause
The piston bitten
1.
The sparking
plug laid down the carbon and
short
circuited
2.
Magneto is bad
1.
Fuel is short
2.
Carburetor clogged
3.
Water in fuel
Cause
Plug pole overheats
Stop button is bad
Cause
No water or water shortage in pump
Sealing
of
junction
Suction hose broken up make the air is
The gap of impeller and volute shell is
The strainer of sucking pipe clogged
The suction hose doubled and clogged
The pump clogged by foreign body
Impeller and volute shell wore out
The position of discharge port is too
Impeller and volute shell rusting
The pump clogged
6
Cylinder covered with
carbon
Fuel bad
Firing chamber covered
with carbon
Remedies
Change the piston or remedy
it
Clean out the carbon
Check and remedy
Feed the tank
Clean
Refill with fresh fuel
Remedies
Clean carbon
Clean the plug and check the gap
Check and remedy
Feed water
damaged
or
Change or tighten
Change the pipe
Check and adjust
Adjust
Clean
Clean
Clean
Clean
Change
Change the installing of pump
Clean
Clean
Change
Change
Clean
Replace
Clean
Check
and
replace
Remedy
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