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PROBLEM
No or low pressure (after
period of normal use.)
CAUSE
1. Worn seal or packing.
2. Worn or obstructed valves.
3. Worn unloader piston.
4. Worn E-Z start valve.
1. Worn or broken o-ring.
2. Loose hose connection.
Water leaking at gun/wand
connection
Water leaking at pump
Oil leaking at pump
(if applicable)
Engine will not idle down
(if equipped with Idle down
assembly)
Water leaking from stem on
idle down assembly (if
equipped)
1. Loose connections.
2. Piston packings worn.
3. Worn or broken o-rings.
4. Pump head or tubes damaged from
freezing.
1. Oil seals worn.
2. Loose drain plug.
3. Worn drain plug, o-ring
(if applicable).
4. Worn fill plug o-ring.
5. Pump overfilled.
6. Incorrect oil used.
7. Vent plug is clogged.
1. Cable is loose from idle down
assembly.
2. Piston is separated from stem in
piston/stem assembly.
3. Piston Stem is bent.
4. Lack of water supply.
O-rings damaged in idle body
assembly.
2. Damaged stem.
CORRECTION
1. Have replaced byAWSC.
2. Have replaced byAWSC.
3. Have replaced by AWSC.
4. Have replaced by AWSC.
1. Check and replace.
2. Tighten.
1. Tighten.
2. Have replaced by AWSC.
3. Have replaced by AWSC.
4. Have replaced by AVVSC.
1. Have replaced by AWSC.
2. Tighten.
3. Check and replace.
4. Check and replace.
5. Check for correct amount.
6. Drain and fill with correct amount and type of
oil.
7. Clean vent plug; blow air through it to
remove any blockage. If problem persists,
replace plug.
1. Reattach cable.
2. Have replaced by AWSC.
3. Have replaced by AWSC.
4. Water supply must be at least 5 GPM @ 20
PSI
1. Have replaced by AWSC.
2. Have replaced by AWSC.
18 -- ENG
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