Author Topic: 55 rancher rebuild (Read 336 times)

hadji · « **on:** July 07, 2014, 03:00:49 pm »

I replaced the piston and cylinder on my 55 rancher. Now it starts and runs but has very little power. Any suggestions?

man of stihl · « **Reply #1 on:** July 07, 2014, 11:27:56 pm »

Why did you replace the original p&c?

hadji · « **Reply #2 on:** July 08, 2014, 10:07:50 am »

The piston was badly scored. I was told that the saw got too hot, possibly due to wrong fuel mix.

KilliansRedLeo · « **Reply #3 on:** July 08, 2014, 10:15:21 am »

Or badly leaking seals, or carb plate problems. Did you replace the impulse grommet and carb flange tube?

hadji · « **Reply #4 on:** July 08, 2014, 02:37:01 pm »

I did not. How would they affect performance?

man of stihl · « **Reply #5 on:** July 08, 2014, 07:42:51 pm »

Because they are known to fail in these models. Causing air leaks and could be the reason why the p&c toasted in the first place. Also check your tank vent. If its not working correctly it will be gutless. Like what Tim said. Did you put that rubber grommet in the new cylinder? The new cylinders don't have it in them.

man of stihl · « **Reply #6 on:** July 08, 2014, 08:06:25 pm »

Part # 505 31 07-51

3000 FPS · « **Reply #7 on:** July 09, 2014, 12:53:48 am »

Try a compression test on it also. Need to make sure the compression is up where it should be.

hadji · « **Reply #8 on:** July 10, 2014, 10:13:35 am »

Thanks for the info guys. As you can tell I'm pretty new at this.

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Author Topic: 55 rancher rebuild (Read 336 times)

hadji

55 rancher rebuild

man of stihl

Re: 55 rancher rebuild

hadji

Re: 55 rancher rebuild

KilliansRedLeo

Re: 55 rancher rebuild

hadji

Re: 55 rancher rebuild

man of stihl

Re: 55 rancher rebuild

man of stihl

Re: 55 rancher rebuild

3000 FPS

Re: 55 rancher rebuild

hadji

Re: 55 rancher rebuild

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