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RM 125 Powervalve help

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My son and I are trying to rebuild his topend, 03 RM 125; things were going pretty well till we started reassembly, when taking apart the powervalve rod that goes down into the bottom end would move freely, now on reassembly, it doesn't move much at all making it hard to attach back to the power band on the top end. Should it move freely? What should I do?

Thanks, Chad

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Did you try putting pre-mix oil on it before inserting?

I just did my sons top end and when I put them back in to check alignment etc they were stiff to turn.....once I got it, I then took them out, oiled 'em then replaced. They slid/turned with no problem.

Did you clean them up good???

Ie scrape of carbon and all other gunk.

Did you clean out the ports they sit in???

Everything should go back nicely if head has been cleaned and all powervalve components too. Oil em up and reassemble.

Sons was pretty gummed up, and hard to turn shaft by hand (connector shaft to bottom end disconnected). Once we were done, they moved really nice and now runs great.

Hope this helps

Ditton

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My son and I are trying to rebuild his topend, 03 RM 125; things were going pretty well till we started reassembly, when taking apart the powervalve rod that goes down into the bottom end would move freely, now on reassembly, it doesn't move much at all making it hard to attach back to the power band on the top end. Should it move freely? What should I do?

Thanks, Chad

yes, it should move freely. the plastic clip on the bottom could be out of place and binding, they are known for breaking also, drain the trans oil and remove the side cover, i'm sure you'll see you're going to need a new linkage clip.

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