January 7, 201313 yr Bike will only start with the choke on and takes about 10 secs for revs to go down when revved have cleaned carb and is still no better
January 7, 201313 yr Time for crankseals from what you describe, the gearbox side seals don't leak as often as the ignition side seals but you may as do them at the same time. Get a set of viton seals & clutch cover gasket off splatshop, you'll need to remove the clutch as well as the primary drive gear to do the gearbox side seal & both the flywheel & stator to do the ignition side seal
January 8, 201313 yr Very possible, yet we know nothing about the bike, or your ability to properly clean the carb! Sorry, but the only thing I assume is the worst!
January 8, 201313 yr Zak apologies if slightly patronising. When you removed the pilot jet for cleaning, did you hold it up to the light to check that the jet orifice was clear and was circular (not partialy blocked)? also when you blasted all the various orifices with air, were all of the jets and the idle screw removed? similar to other posts, the work gets more complex / time consuming from here so its worth checking. Let us know your process to save us pointing you in the wrong direction. Dom
January 8, 201313 yr Zak, your a man of few words. The idle screw (meant to say the idle mixture screw also called the fuel screw) is the brass slotted screw in the side of the carb. Have a look at this video in which most aspects of the carb and faults are explained. See minute 5:00 and minute 20:55 for the pilot and fuel screw http://www.youtube.com/watch?v=1EbXacjIV78. Also see this video (basic tools and uses carb cleaner but you get the idea) .Dom Edited January 8, 201313 yr by dombush
January 8, 201313 yr Author thanks dom very helpfull will try againg tomorow with the carb thanks will let u no how i get on
January 9, 201313 yr what would of caused this So you see you get a bit of free training here! Yey being satisfied with the carb and all that, the seals may still be suspect, ad as we still have no idea about the age of the bike or when and how all this started. It does seem the standard rubber crank seals do not tolerate the alcohol induced fuel well over time and may weaken. I might also suspect a 125 to be a bit more sensitive ti this due to its smaller volumes which would throw things off more easily, yet not enough reports to tell for sure. Thus the recco for the Viton(resistant) seals for hopefully longer lifespan.
January 9, 201313 yr Author Copemech it is a sherco 125 2008 it was a full rebuild about 2 weeks ago they wouldn't go that quick would they?????
January 9, 201313 yr Zak can you define "full rebuild" for us (some detail of the components replaced) Dom
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