badgersheid Posted February 27, 2011 Report Share Posted February 27, 2011 hi, new to the game and wondered whats wrong with bike- Sherco 250 2007 vintage, it smokes pretty badly and when i change the gearbox oil there is only about 250cc comes out, despite draining and filling it with 450 every 20-25 hours of riding! what can let the bike burn gearbox oil? Quote Link to comment Share on other sites More sharing options...
monty_jon Posted February 27, 2011 Report Share Posted February 27, 2011 hi, new to the game and wondered whats wrong with bike- Sherco 250 2007 vintage, it smokes pretty badly and when i change the gearbox oil there is only about 250cc comes out, despite draining and filling it with 450 every 20-25 hours of riding! what can let the bike burn gearbox oil? The crank seal has probably gone 1 Quote Link to comment Share on other sites More sharing options...
copemech Posted February 28, 2011 Report Share Posted February 28, 2011 Best to order you a pair of the Viton seals fron Chris at Splatshop. Seals come out the sides with clutch side and magneto removed so requires some tools and expertise. Quote Link to comment Share on other sites More sharing options...
badgersheid Posted February 28, 2011 Author Report Share Posted February 28, 2011 Best to order you a pair of the Viton seals fron Chris at Splatshop. Seals come out the sides with clutch side and magneto removed so requires some tools and expertise. Quote Link to comment Share on other sites More sharing options...
badgersheid Posted February 28, 2011 Author Report Share Posted February 28, 2011 thanks, a local bike shop has quoted me 2 hours labour plus parts to fix it if i bring him the engine unit from the bike, Quote Link to comment Share on other sites More sharing options...
badgersheid Posted February 28, 2011 Author Report Share Posted February 28, 2011 thanks, a local bike shop has quoted me 2 hours labour plus parts to fix it if i bring him the engine unit from the bike, Quote Link to comment Share on other sites More sharing options...
copemech Posted February 28, 2011 Report Share Posted February 28, 2011 (edited) No need to remove motor, sounds ok, though you need to order in the special Viton seals if possible, day or two in the post won't kill you. Get a clutch cover gasket as well in the case the original tears during removal. On second thought, if they told you to remove the motor, you might want to select someone with more Sherco experience, such as a local dealer or experienced rider. Edited March 1, 2011 by copemech Quote Link to comment Share on other sites More sharing options...
copemech Posted March 2, 2011 Report Share Posted March 2, 2011 thanks, a local bike shop has quoted me 2 hours labour plus parts to fix it if i bring him the engine unit from the bike, Quote Link to comment Share on other sites More sharing options...
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