Started new thread 1981 YZ125H Electrical Question 9/4/2018 7:43 PM

After a partial restoration of my 1981 YZ125, the bike seemed to run fine for about 20 minutesof dirt riding, then started to pop a little and seemed to be loosing power on hills. After stopping and pulling the stator cover we discoverd the wiring in ... more »

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Started new thread YZ125 Stator Meltdown 9/4/2018 7:31 PM

I have a 1981 YZ125H that my son and I just finished a partial restoration on. It ran pretty well for a while, then died suddenly. After waiting a bit, it started up and rode OK for a while, but didn’t seem to have the power it should on hills. We noticed

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This forum thread has 5 replies

Added reply in a thread 1981 YZ125 Shift Drum Assembly 9/4/2018 7:22 PM

Finally opened it up and sorted it out. It ran great until the stator wiring melted down. Now on to fixing the electrical. Gotta love 37 year old dirt bikes.

Started new thread 1981 YZ125 Shift Drum Assembly 3/30/2018 7:34 AM

I've rebuilt my 1981 YZ125 and everything works great except fr the fact that when i attempt to take off in first, the engine stops. much like it's really in 5th, or 6th gear and it doesn't have the torque to pull it. I basically left the transmission ... more »

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Added reply in a thread 1981 YZ125 Shifting 3/5/2018 5:40 PM

Yeah, I’m worried about that. Will require splitting the cases again. Ugh!

Added reply in a thread 1981 YZ125 Shifting 3/5/2018 5:39 PM

When we disassembled the engine, we kept the tranny together in a bundle. So, I’m not sure how it could have gotten back in incorrectly. Yet, I don’t know what else it could be. Thanks!

Started new thread 1981 YZ125 Shifting 3/5/2018 2:39 PM

I rebuilt my 1981 YZ125 and put in new clutch plates, as well. It starts, idles and revs well, but when I try to drive it it acts like I'm starting in 5th, or 6th gear and stalls. I've set it on my bike stand and I can find neutral, then when I push ... more »

This forum thread has 7 replies