picksgasgas Posted May 28, 2011 Report Share Posted May 28, 2011 hi all second post today lol my mates sherco 250 2001 model devoloped a problem last night we were out doing a few sections and it was running like a dream left it standing for 10 mins to have a chat kicked it up and it wouldnt rev the next thing the exhaust was glowing red i thought it was going to change shape how hot it got. Brought it home cleaned carb took exhaust off blew it through thought that might have been blocked also took head off and clenaed all the piston put a new plug in it and it still does the same. When you rev it it just seems like its struggling and spluttering it also back fires as well any help on this i will be gratefull thanks steve....? Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted May 28, 2011 Report Share Posted May 28, 2011 hi all second post today lol my mates sherco 250 2001 model devoloped a problem last night we were out doing a few sections and it was running like a dream left it standing for 10 mins to have a chat kicked it up and it wouldnt rev the next thing the exhaust was glowing red i thought it was going to change shape how hot it got. Brought it home cleaned carb took exhaust off blew it through thought that might have been blocked also took head off and clenaed all the piston put a new plug in it and it still does the same. When you rev it it just seems like its struggling and spluttering it also back fires as well any help on this i will be gratefull thanks steve....? Could it have sheared the woodruff key therefore altering the timing ? Phil Quote Link to comment Share on other sites More sharing options...
drake Posted May 28, 2011 Report Share Posted May 28, 2011 Could it have sheared the woodruff key therefore altering the timing ? Phil That's what was wrong with mine when that happened to me. Quote Link to comment Share on other sites More sharing options...
picksgasgas Posted May 29, 2011 Author Report Share Posted May 29, 2011 cheers guys just pulled the fly wheel off and it was the woodruff key thanks for the help Quote Link to comment Share on other sites More sharing options...
drake Posted May 30, 2011 Report Share Posted May 30, 2011 May be wise to get a second key as a spare? Quote Link to comment Share on other sites More sharing options...
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