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TROUBLE AND MAINTENANCE
TROUBLE AND MAINTENANCE
Low spray
Low spray
volume Bad
volume Bad
condition of
condition of
spray
spray
Cannot increase
Cannot increase
pressure
pressure
Oil leakage
Oil leakage
from muffler
from muffler
or air cleaner
or air cleaner
Symptom
Possible Cause
Maintenance
Air is coming into suction side
Decline of engine output
Water leak from hose and connection
Clogged hole of spray head
Wear of spray head hole
Pressure adjusting handle is set at
"O"
Wear of consumption parts
Oil leakage due to engine fall
Burned engine
Too much engine oil
Check suction pipe
* See "Maintenance 2"
Check and repair
Stop water leak
Wash spray head with water
* See "Caution after Use" P.19
Exchange spray head
Adjust pressure adjusting
handle to "L", "M" or "H"
Ask service station.
Ask service station.
Ask service station.
Adjust to proper engine oil amount
Piston seal, Oil seal, Packings, O-rings, Piston, Piston rod, Springs and Delivery hose are
consumption parts. Repair for those parts are out of guarantee even within guarantee
period. Recommend to exchange those parts every 100 hours; however lifetime of those
parts may become shorter depending on chemicals.
Do not do overhaul and repair by yourself except those which are
mentioned in the operation manuals. Ask service station.
Caution
Be careful with chemicals
coming from delivery mouth.
Caution
Reel Connection Hose
Reel Connection Hose
Reel Connection Hose
Delivery Mouth
Delivery Mouth
Delivery Mouth
Take off reel hose and run the machine.
If spray does not start, the major possible cause is that air is coming into delivery hose.
In this case, follow these steps to check.
1. Take off reel connection hose with spanner etc.
2. Start engine
3. Make sure to check liquid is coming from delivery mouth.
1. Take off suction hose
3. Touch suction mouth with your hand while
running engine.
If you feel that your hand is sticking to suction
mouth, pump has not problem and the main
cause is that air is coming into suction hose.
2. Start engine
4. Check again that the
connection has packing and
suction hose does not have
a hole.
4. Attach reel connection hose.
MAINTENANCE 1
MAINTENANCE 1
Remove water (liquid) from inside of delivery hose as much as
possible. If water (liquid) is left inside of delivery hose, it would
be difficult to let air out.
Caution
Each engine has different plug. Read engine operation
manual.
Caution
Check suction side pipe
If suction does not start or spray volume is less, the major possible cause is that
air is coming into suction hose.
If this is the case, follow these steps to check.
Check if plug is wet
or dirty.
If plug is wet or dirty,
clean it with cloth.
Check if gap of spark
plug is proper.
Proper gap is 0.6 - 0.7 mm.
If not, adjust the gap.
Whether feeling suction
Whether feeling suction
Whether feeling suction
Packing
Suction Hose
Recoil
Recoil
Recoil
MAINTENANCE 2
MAINTENANCE 2
MAINTENANCE 3
MAINTENANCE 3
• Exchange to new plug if engine does not start after cleaning plug or adjusting the
gap.
