Troubleshooting - Koshin KTH-S Serie Instrucciones De Funcionamiento Y Manual De Piezas

Operating Instructions & Parts Manual
TRASH PUMP

Troubleshooting

SYMPTOM
Cannot pull or hard to
pull recoil starter
Low delivery volume
A
Ñ
O
L
Pump does not prime
water
F
Engine does not start
Ç
A
I
S
Oil leakage from
muffler or air cleaner
Heavy Duty
POSSIBLE CAUSE(S)
1. Old fuel
2. Rusting inside engine
3. Burn out of engine
4. Blocked impeller
5. Debris at impeller
1. Air leakage from suction side
2. Output power down from engine
3. Damage of mechanical seal
4. Suction lift is high
5. Suction pipe is too long or too small in
diameter
6. Water leaking from delivery hose or pipe
7. Debris at impeller
8. Worn or broken impeller
1. Air leaking in from suction side
2. Insufficient priming water Inside pump
casing
3. Drain plug is not tightened
4. Engine speed/rpm is too low
5. Damage of mechanical seal
6. Wrong suction hose used
1. Carburetor is choked/blocked
2. Spark Plug is wet
3. Air cleaner dirty
4. Too much engine oil (4-cycle engine)
5. Insufficient engine oil (4-stroke engine)
6. After checking above points, still engine
does not start
1. Tipping of engine
CORRECTIVE ACTION
1. Replace fuel. If there is no improvement, repair
engine
2. Refer to Engine Operation Manual. (Repair)
3. Refer to Engine Operation Manual. (Repair)
4. Dismantle & clean the impeller
5. Dismantle & clean the impeller
1. Check hose at suction side
2. Check and repair engine
3. Replace mechanical seal (Repair)
4. Decrease suction lift
5. Shorten suction pipe or enlarge repair to proper
diameter
6. Check and stop leakage of water
7. Dismantle & clean the impeller
8. Replace the impeller (Repair)
1. Check hose and connections
at suction side
2. Fill pump with water for priming
Refer to BEFORE USE - "5 Fill pump with water
before use"
3. Tighten drain plug firmly. Please refer to
"ATTENTION AFTER USE"
4. Refer to Engine Operation Manual
5. Replace mechanical seal (Repair)
6. Use correct suction hose
1. Repair
2. Check & repair the plug
3. Clean air cleaner. (Refer to Engine Operation
Manual)
4. Adjust engine oil to suitable level
5. Function of oil alert (oil sensor) is working. (This
function protects engine. If volume of engine oil is
not a suitable level, engine does not start)
6. Possibility of damage, inner parts of engine
(Repair)
1. Clean engine (Air Cleaner, Carburetor, Muffler,
Spark plug, etc.)
5
KTH-S SERIES
⇒
SOLUTION ①
⇒
SOLUTION ②
⇒
SOLUTION ①
⇒
SOLUTION ②
⇒
SOLUTION ③
E E
N N
G G
L
I
S S
H H
E
S
A
Ñ
O
L
F
R
A
A
I
S