Now, how does this thing go back together?

He cleaned the powervalve, if he took the powervalve apart then it is not adjusted so it's not tinkering to make it work correctly. I did the exact same thing. I didn't have my manual yet so I just left it. Not tight enough the powervalve won't move, to tight and you will not have any mid-range it will go straight to the powerband.  

What issues Woods?  
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The King Of Crumpets - Crumpet Boy!

- 1991 RM125

pdk_6589:
He cleaned the powervalve, if he took the powervalve apart then it is not adjusted so it's not tinkering to make it work correctly. I did the exact same thing. I didn't have my manual yet so I just left it. Not tight enough the powervalve won't move, to tight and you will not have any mid-range it will go straight to the powerband.

I just checked, my manual. I does describe some sort of set-up, but it is pretty vague. I cannot be arsed to do it now, I will do it another day. Wayy to cold out side!  
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The King Of Crumpets - Crumpet Boy!

- 1991 RM125

I don't care if you do it now or not. I want your bike to run as good as it can so I was just making sure you aware that it needs adjusted. If you can find the number of turns then it is to easy to adjust.  

My post stands.  
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DIABETES SUX!

pdk_6589:
I don't care if you do it now or not. I want your bike to run as good as it can so I was just making sure you aware that it needs adjusted. If you can find the number of turns then it is to easy to adjust.

It said one, 360degree clockwise turn.  
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The King Of Crumpets - Crumpet Boy!

- 1991 RM125

pdk_6589:
I don't care if you do it now or not. I want your bike to run as good as it can so I was just making sure you aware that it needs adjusted. If you can find the number of turns then it is to easy to adjust.

92rm125:
It said one, 360degree clockwise turn.

good, then turn it and "Bobs your Uncle"!!  

Bob? Do I know him?!  
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The King Of Crumpets - Crumpet Boy!

- 1991 RM125

The only thing I can see that you missed is that you should have mentioned to tighten the base and head nuts at 1 turn at a time in a star or criss-cross pattern. Just tightening them to spec going in a circle will warp the head and/or the case or cylinder.  

Oh, yeah. Thanks Elko, I will ammend that bit!  
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The King Of Crumpets - Crumpet Boy!

- 1991 RM125

Hey 92, great post.  As a total newb I found it very interesting and useful.  Just out of curiosity, how long did it take you to do this job as it was your first time?

Spider  
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WAFNIA!

BC
01 YZ 125
02 RM 85
99 KX 80
87 DR 200

If I had all the parts in front of me, I reacon I could have done it in less than a day. But for I spread it out over a few weeks!  
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The King Of Crumpets - Crumpet Boy!

- 1991 RM125

Looks good to me but I'm still a rookie.  
2007 300XC
2005 PW50(son's bike)

Ha! You ever done a top-end christie?  
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The King Of Crumpets - Crumpet Boy!

- 1991 RM125

although my name isnt 92 but to answer your question spider, my first time doing it took me about 2 hours because i wanted to be precise and make sure i did everything exactly.  a person could easily do an entire top end including stripping it down and rebuilding it within half an hour though.