Copyright © 2017 MAT Industries, LLC
16 - ENG
TROUBLESHOOTING GUIDE
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Problem Cause Correction
Engine will not start or
stops while operating
1. Low-oil shutdown.
2. Engine switch not in the “ON” position.
3. Pressure build up in hose.
1. Fill engine with oil.
2. Turn switch “ON”.
3. Squeeze trigger.
Engine is overloaded 1. Nozzle partially blocked. 1. Clean nozzle.
Water or oil leaking
from bottom of pump
1. A small amount of leakage is normal. 1. If excessive leaking occurs call the Customer
Service Department.
Pressure increases
when gun is closed
1. Bypass valve not operating properly. 1. Call the Customer Service Department.
Engine running but
pump not building
maximum pressure or
has irregular pressure
1. Faucet closed.
2. Unit has been stored in freezing
temperatures.
3. Inadequate water supply.
4. Water inlet screen clogged.
5. Kink in garden hose.
6. Wand nozzle worn or damaged.
7. Air in pump.
8. Suction or discharge valves clogged or
worn out.
9. By-pass valve not operating effectively.
1. Open faucet.
2. Thaw out unit completely including hose, gun
and wand.
3. Provide a minimum of 4 gpm at 20 psi.
4. Clean screen.
5. Straighten hose.
6. Replace nozzle.
7. Let run with gun open and wand removed
until steady stream of water is released.
8. Call the Customer Service Department.
9. Call the Customer Service Department.
No intake of chemicals
1. Injection tube not securely inserted into
unit.
2. Tube cracked or split.
3. Wrong nozzle.
4. Injection tube strainer clogged.
5. Nozzle blocked.
6. Dried chemicals in injector.
1. Push firmly into injector.
2. Replace tubing.
3. Switch to low pressure nozzle.
4. Clean strainer.
5. Clean nozzle.
6. Dissolve by running warm water trough the
injection tube.
Trigger will not move 1. Gun safety lock engaged. 1. Release safety lock.
Water in crankcase 1. High humidity.
2. Worn seals.
1. Change oil more frequently.
2. Call the Customer Service Department.
Noisy operation 1. Worn bearings
2. Air mixed with water.
1. Call the Customer Service Department.
2. Check inlet lines for restrictions and /or proper
sizing.
Rough/pulsating
operation with
pressure drop
1. Worn packing.
2. Inlet restriction.
3. Unloader.
4. Air mixed in water.
1. Call the Customer Service Department.
2. Check system for stoppage, air leaks.
correctly sized inlet plumbing to pump.
3. Check unloader for proper operation.
4. Check inlet lines for restrictions and/or proper
sizing.
High crankcase
temperatures
1. Wrong grade of oil.
2. Improper amount of oil in crankcase.
1. Use recommended oil.
2. Adjust oil level to proper amount.
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