Holmatro DPU31 - Troubleshooting Engine Issues; Engine Fails to Start

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10. Troubleshooting
10.1 The engine fails to start
1
Check the engine oil
level 
(a) No or low
engine oil
(b) Excess
engine oil

(a) Add engine oil to correct
level
(b) Remove excess engine oil

Engine oil level okay
2
Check the fuel level No fuel Add fuel

Sufficient fuel
3
Check the engine
switch

Switch is OFF

Turn engine switch to ON

Switch is ON
4
Check position of the
choke switch
Cold engine in
CHOKE position.
Hot engine in RUN
position.

Incorrect
choke
Position.

Set choke to correct position

Choke position okay
5
Check for kinked or
twisted fuel lines

Kinked lines

Remove kinks

Fuel lines free of
kinks
6
Check spark plug

Fouled spark
plug and no or
weak spark

Replace spark plug

Spark plug okay
7
Consult your
Holmatro dealer