Hi All,
I have a Mountfield mower (originally bought from B&Q around 5 years ago) w= hich has a Briggs and Straton engine. All has been well until 2 events...
- We had a load of building work done and the mower got piled under some o= ther gardening gear and the 2 springs on the carb stretched (net result mow= er would start etc. but not run so smoothly)
- The builders used a fuel can for Diesel and I mistakenly put it in the m= ower :(. Net result tried to start mower (obviously failed miserably) real= ised my mistake, emptied the tank, filled with petrol. Mower eventually st= arted and I mowed the lawn (albeit with clouds of black smoke!!).
I used the mower a few times after the diesel episode, and although on star= ting it would have some black smoke, during normal operation, it was smoke = free - still not running right though.
All of a sudden, it started conking out after around 10 mins of usage. Taki= ng the plug out revealed it was caked in soot. Cleaning it got the mower g= oing agin for 10 mins... So I...
- changed the springs on the carb
- cleaned the air filter
- replaced the plug
- got fresh petrol
None of this seems to have made a difference except for the running duratio= n has gone up from 10 mins to enough to mow my lawn (probably an hour and a= half or so). Recently though... the 10 mins duration has returned and the= same coked up plug and clean remedy!!!
Anyone any idea what I could try next? Should I scrap it?
thanks in advance for your help
Lee.