Webb Werr17, Operator'S Manual And Parts List

14 User’s manual 

Fast trouble shooting 

Often, a depleted, loose, or dirty spark plug is responsible for a mower not being able 
to start, but there can be a number of other reasons. Refer below to the list of potential 
problems you may encounter, along with suggested remedies. For servicing and all 
warranty work, contact your local Authorised 

Webb

 Dealer. 

Problem Likely 

cause 

Throttle lever not set properly 

Out, or almost out, of fuel 

Spark plug 

fail

ed 

Suggested remedy 

Set to ‘Cold Start’ for cold or a little lower when warm 

Fill tank with unleaded petrol 

Replace with a suitable new spark plug 

Engine does 

not start. 

Engine stops 

often

Engine loses 

power 

Mower 

vibrates 

too much 

Poor cutting 

catching

Spark plug dirty 

Spark plug not connected 

Flooded engine 

Old petrol in the tank 

Water in the fuel tank 

Blocked fuel supply 

Fuel cap is not venting 

Wrong type of fuel 

Dirty air cleaner filter 

Incorrect height adjustment 

Blocked fuel cap vent holes 

Loose cutting blade 

Bent or broken blade 

Excessive grass/dirt build-up 

B

lade worn/damaged 

Catcher not fitted correctly 

Incorrect cutting height set 

Blocked grass catcher vents 

Clean or replace with a new spark plug 

Press firmly on the terminal cover 

Turn fuel ‘off’ then p

ull cord

 until it starts, then turn ‘on’ 

Drain stale fuel and replace with new unleaded 

Contact an authorised 

Webb

 dealer 

Ensure the fuel line is not pinched or blocked 

You may need to slightly loosen the fuel cap 

Drain petrol tank and fill with new unleaded 

Clean or replace with a new 

B&

S air-filter

Raise the mower’s cutting height lever 

Ensure the 3 holes in the fuel tank cap are clear 

Check and tighten bolts and nuts 

Replace disc or blades 

Clean and ensure underside clear of build up 

Replace blade 

Reattach carefully and also check for damage 

Adjust the cutting height 

Clear and clean the vents 

Reinsert carefully and also check for damage