4 replies to this topic

[picksgasgas]

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....?

[Pistonbroke]

picksgasgas, on 28 May 2011 - 07:50 AM, said:

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

[Drake]

Pistonbroke, on 28 May 2011 - 08:17 AM, said:

Could it have sheared the woodruff key therefore altering the timing ?

Phil

That's what was wrong with mine when that happened to me.

[picksgasgas]

cheers guys just pulled the fly wheel off and it was the woodruff key thanks for the help

[Drake]

May be wise to get a second key as a spare?