Trouble Shooting Guide
If your Vacuum Machine fails to function correctly, refer to the following table for potential
issues and solutions.
Symptom Cause Solution
1. Engine does not turn
over.
a) Low or dead battery
b) Corroded or bad connections
c) Faulty ignition switch
d) Faulty starter motor
e) Seized blower
a) Charge or replace battery
b) Clean or replace connections
c) Replace ignition switch
d) Replace starter motor
e) Clean out or replace blower.
2. Engine does not start
a) Emergency Stop pressed in
b) Battery Isolator
c) Empty fuel tank
d) Fuel line disconnected
e) Dirty fuel filter
f) Faulty fuel pump
g) Faulty spark / glow plugs
h) Faulty ignition coil
a) Release Emergency Stop
b) Open Battery Isolator switch
c) Refill fuel tank
d) Connect fuel line
e) Replace fuel filter
f) Replace fuel pump
g) Replace spark / glow plugs
h) Replace ignition coil
3. Engine lugs or stalls
a) Empty fuel tank
b) Engine speed too low
c) Vacuum relief blocked or set
too high
d) Air filter blocked
a) Refill fuel tank
b) Increase engine speed to 3600 RPM
c) Clean relief area or readjust relief
setting
d) Clean or replace air filter
4. No water pressure
a) Water pump not switched on
b) Water tank empty
c) Water filter blocked
d) Water nozzle blocked
e) Air in water system
f) Water pump not turning
g) Blocked water supply hose
h) Faulty water pump
a) Switch on water pump
b) Refill water tank
c) Clean or replace water filter
d) Clean or replace nozzle
e) See #8 below
f) See # 7 below
g) Clean or replace hose
h) Replace water pump
5. Low water pressure
a) Water filter partially blocked
b) Air in the water system
c) Leak in the water system
d) Water pump turning too slow
e) Incorrect nozzle size or worn
out nozzle
a) Clean or replace water filter
b) See #8 below
c) Repair leak
d) See #7 below
e) Replace with correct or new nozzle
6. Water pressure
fluctuates up and
down
a) Air in the water system
b) Leak in the water system
c) Water filter partially blocked
a) See #8 below
b) Repair leak
c) Clean or replace water filter
7. Water pump not
turning or turning too
slowly
a) Engine speed too low
b) Water pump frozen
c) Faulty water pump
a) Increase engine speed to 3600 RPM
b) Thaw out pump
c) Replace water pump
8. Air in water system
a) Cracked filter housing
b) Loose fitting(s)
a) Replace filter housing
b) Tighten fittings
For further assistance, please call No Dig Equipment Service Department on (08) 9493 0642.
Our technician will be pleased to assist you with your questions
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