Viking LB 540 - Troubleshooting Common Issues; Engine Starting Problems; Engine Performance Issues

0478 670 9903 A - EN
16
17. Troubleshooting
Fault
Possible cause
Remedy
- Engine will not start
- Motorstop lever is not pulled
- No fuel in tank; fuel line
blocked
- Scarifying unit not in
transport position
- Inferior, dirty or old fuel in
tank
- Dirty air filter
- Spark plug socket
disconnected from spark
plug; ignition lead not
properly fastened to socket
- Spark plug dirty or damaged;
incorrect electrode gap
- Press motorstop lever to
handlebar
- Top up fuel; clean fuel line
- Bring scarifying unit into
transport position
- Always use fresh, good
quality fuel, normal unleaded
petrol; clean carburettor
- Clean air filter
- Connect spark plug socket;
check connection between
ignition lead and socket
- Clean or replace spark plug;
adjust electrode gap
- Starting problems or
deteriorating engine
performance
- Scarifying unit not in
transport position
- Lawn scarifier housing
blocked
- Scarifying with excessive
working depth or pushing
speed
- Water in fuel tank and
carburettor; carburettor
blocked
- Contaminated fuel tank
- Dirty air filter
- Dirty spark plug
- Bring scarifying unit into
transport position
- Clean housing (disconnect
spark plug socket)
- Set shallower working depth /
reduce pushing speed
- Empty fuel tank, clean fuel
line and carburettor
- Clean fuel tank
- Clean air filter
- Clean spark plug
Page
Illustration
10
9
11
9, 
12, &, 
12, &, 
12, &, 
8
6
11
6
11
11
8
12, &, 
12, &, 
12, &, 
12, &, 
11
12
5
& see engine instruction manual
 If necessary, contact a specialist dealer; VIKING recommends VIKING specialist dealers.