View Full Version : B&S 12.5 Lawnflite tractor mower dies after an hour.


GreenValley
07-31-2009, 02:33 AM
Hi Guys, Ive got this tractor moewer that runs great for around an hour and then starts spluttering and backfiring and then dies.... if you leave it to cool.... it starts again just fine.

Ive changed the sparkplug, the inline petrol filter, cleaned out the air filter and changed the oil (as I had it in bits).

It still does exactly the same.... any ideas???

Many thanks

GreenValley

bgbass
07-31-2009, 05:19 AM
when it dies have you checked to see if there is spark? also check your gas cap the vent could be plugged up and causing vapor lock

mikel m14
08-01-2009, 01:37 PM
Sounds like the coil is overheating. When it stalls out, check for spark. If no spark then replace coil. I had the same problem with a friend's pocket rocket bike.

GreenValley
08-02-2009, 02:28 PM
thanks guys..... its very much appreciated!!!!!!!!!!!