Troubleshooting Guide - Timberpro WBC 520 Bedienungsanleitung

12. MAINTENANCE
FUEL FILTER
If the engine runs short on fuel, check the fuel cap
and the fuel filter for blockage.

13. TROUBLESHOOTING GUIDE

Case 1: Starting failure
CHECK
Fuel tank
Fuel filter
Carburettor adjustment screw
Sparking (no spark)
Spark plug
Case 2: Engine starts but does not keep running
CHECK
Fuel tank
Carburettor adjustment screw
Muffler, cylinder (exhaust port)
Air filter
Cylinder fin, fan cover
If troubleshooting does not solve the problem, contact your dealer or the manufacturer directly. Use only original parts
approved by the manufacturer, otherwise a hazard risk arises.
PROBABLE CAUSE
Incorrect fuel
Fuel filter is clogged
Out of normal range
Spark plug is fouled/wet. Plug gap is incorrect
Disconnected
PROBABLE CAUSE
Incorrect fuel or stale fuel
Out of normal range
Build up of carbon
Clogged with dust
Clogged with dust
GB 13
SPARK PLUG
Starting failure and misfiring are often caused by a fouled
spark plug. Clean the spark plug and check that the plug
gap is in the correct range. For a replacement spark plug,
use the correct type.
~
ACTION
Drain and use correct fuel
Clean
Adjust to normal range
Clean/dry Correct Gap 0.6 - 0.7mm
Retighten
ACTION
Drain fuel tank and carburettor,
fill with fresh fuel
Make necessary adjustments
Clean or replace muffler cylinder
and you must use mixed fuel
Clean or replace air filter
Clean or replace cylinder or wait
several minutes before trying again