rebuild

  1. Yz80 case question

    I’m rebuilding a 2001 yz80 for a friend, they bought it as a non runner so they don’t know much about it. The kick start tab on the cases has a pretty good chunk taken out of it, I wanted to know what my options were with this. It looks like someone JB welded it and I’m not sure if that’s a...
  2. vivingmx

    Help - Need Ideas - Crankshaft Bolt is Stuck! (2002 YZ125 Rebuild Project)

    Hi there, Purchased a project end of Oct. 2018... I am rebuilding a 2002 YZ125 basically from scratch. The whole bike is torn apart at this point, parts set aside for cleaning and repair, engine cases split, and am now finally at the source of the problem.... The transmission bearings are...
  3. CR125 low power and stutter

    I have a 2002 that has very low power , just freshly broken in (properly ) with a oem piston, rings , and jug... The jetting should be spot on the only other thing that could be affecting it would be some fraying on the wiring harness. The wire is connect by about 6-7 strands...Not sure if that...
  4. Engine Rebuild Video New Member

    Hello all and fellow motorcycle enthusiasts. Just to start off im a new member but long time reader for advice and tips. Finally signed up so i could answer other peoples questions and concerns. But anyways this summer while riding i had some major engine problems such as the crank and bearing...