Husqvarna LC 18 Lawn Mower User Manual


 
English – 15
TROUBLE SHOOTING GUIDE
Trouble shooting guide
Trouble Possible cause(s) Corrective Action
Engine does not start Throttle control lever not in correct starting
position
Move throttle lever to FAST or START position
Faulty spark plug connections or interchanged
cables
Connect ignition lead to spark plug
There is no fuel in the fuel tank Fill tank with clean, fresh unleaded petrol
Dirt in the carburettor or fuel line Clean carburettor and/or fuel line
Spark plug defective Clean, adjust gap or replace
Engine flooded Crank engine with throttle in FAST position
Engine does not stop Stop switch/mechanism malfunction Disconnect spark plug ignition lead and check
the machine at an autorized dealer.
Engine runs erratic Unit running in START position Move throttle lever to FAST position
Spark plug ignition lead loose Connect and tighten spark plug ignition lead
Blocked fuel line or stale fuel Clean fuel line; fill tank with clean fresh unleaded
petrol
Vent in gas cap plugged Clean vent
Water or dirt in fuel system Drain fuel tank. Refill with fresh fuel
Dirty air cleaner Clean air cleaner
Carburettor out of adjustment Adjust carburettor
Engine overheats Engine oil level low Fill crankcase with recommended oil
Air flow restricted Remove blower housing and clean
Carburettor not adjusted properly Adjust carburettor
Occasional skip (hesitates)
at high speed
Spark plug gap too close Adjust gap to 0.50 mm
Idles poorly Spark plug fouled, faulty or gap too wide Reset gap to 0.50 mm or replace spark plug
Carburettor improperly adjusted Adjust carburettor
Dirty air filter Clean air cleaner
Excessive vibration Cutting blade loose or unbalanced Tighten blade and adapter, Balance blade
Bent cutting blade Replace blade
Mower will not mulch grass Engine speed too low Set throttle between 3/4 and full throttle
Wet grass Do not mow when grass is wet, wait until later to
cut
Excessively high grass Mow once at high cutting height, then mow again
at desired height or make a narrower cutting
strip, e.g. 1/2 width
Dull blade Sharpen or replace blade
Uneven cut Wheels not positioned correctly Place all four wheels in same height position
Dull blade Sharpen or replace blade