March 4, 200818 yr Hi there just stripped top end to fit a new piston kit and small end to my 06 250 pro because of low ,ish compression and a bit of noise top end , and noticed when i push kickstart down and rotate conrod transmission oil is visible . Is this normal for the pro as i recall an earlier post saying that the mains are lubed by trans oil but not sure .The bike didnt smoke much and didnt smell like it was burning ATF . Cheers for any help
March 4, 200818 yr Hi there just stripped top end to fit a new piston kit and small end to my 06 250 pro because of low ,ish compression and a bit of noise top end , and noticed when i push kickstart down and rotate conrod transmission oil is visible . Is this normal for the pro as i recall an earlier post saying that the mains are lubed by trans oil but not sure .The bike didnt smoke much and didnt smell like it was burning ATF . Cheers for any help The main crank bearings are lubricated by transmission fluid in the Pro. I wouldn't worry if a little oil is at the bottom of the case. It is usually a mixture of normal condensation and premix oil that has settled off the walls and is normal. Jon
March 4, 200818 yr Author The main crank bearings are lubricated by transmission fluid in the Pro. I wouldn't worry if a little oil is at the bottom of the case. It is usually a mixture of normal condensation and premix oil that has settled off the walls and is normal.Jon Thanks for your reply, on checking further i think it may well be premix oil as you say .PHEW.
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