Ms271 rebuild

[Rookie]

Somehow, I managed to trash the piston in my chainsaw. I'm trying to rebuild it, wish me luck. I can't figure out how to get the brake off...

 

[Rookie]

 

[rosejm]

Let me know if you figure out how to increase the bar oiling rate.

 

[DoggyDaddy]

View attachment 307083

You didn't accidentally mistake sand for 2 cycle oil did you?

 

[Rookie]

Crazy, isn't it? I even spent stupid money for premixed ethanol free gas.

 

[meyer4589]

I’ve rebuilt a few different stihl saws. Are you removing the brake to just clean everything up or is it preventing you from getting the cylinder out?

 

[Rookie]

It was preventing me from getting the cylinder out. Figured out that it was reverse threaded onto the shaft. I got it rebuilt and it runs well except for the oiler that I managed to break. Got a new one coming this week.

 

[indyjohn]

It was preventing me from getting the cylinder out. Figured out that it was reverse threaded onto the shaft. I got it rebuilt and it runs well except for the oiler that I managed to break. Got a new one coming this week.

By the looks of that hockey puck, I would think you had to hone the jug, right?

 

[Rookie]

Yes. I used pvc pipe and taped sand paper to it and used it to clean the inside of the cylinder.

 

[indyjohn]

Yes. I used pvc pipe and taped sand paper to it and used it to clean the inside of the cylinder.

I don't mean to be Debbie Downer but I don't hold out hope for a long life without replacing the cylinder.

I've been very happy with my 6 yo 271 but a couple seasons ago I had to replace the oil pump after I burned up a bar learning that it wasn't working.

 

[Rookie]

I'm not. I didn't want to pay someone to rebuild it, so I chose to go the cheapest route possible. If/when I burn the piston up again, I'll replace everything since I know how to rebuild it myself.

 

[indyjohn]

I'm not. I didn't want to pay someone to rebuild it, so I chose to go the cheapest route possible. If/when I burn the piston up again, I'll replace everything since I know how to rebuild it myself.

I am not a 2-stroke expert. I think you'll see it smoke and not make max rpm, all depending on how toasty it got. If it doesn't smoke and revs about normal then there is hope.

 

[Rookie]

No smoke and rpms sound normal. We'll see how long it lasts. Next rebuild will be a complete rebuild since I'm confident that I can do it myself.

 

[Rookie]

The broken oiler was my fault. There's a large "washer" that goes between the oiler and chain brake. I didn't put it on before putting the brake on which allowed the brake to crush the oiler.

 

[t-squared]

Let me know if you figure out how to increase the bar oiling rate.

It's not the best video for sure, but this guy used a small O-ring to stop the oil from puking out of the tensioner hole and redirect it to the bar groove.