Author Topic: 55 rancher rebuild  (Read 337 times)

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Offline hadji

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55 rancher rebuild
« 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?

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Offline man of stihl

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Re: 55 rancher rebuild
« Reply #1 on: July 07, 2014, 11:27:56 pm »
Why did you replace the original p&c?
Ron

Offline hadji

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Re: 55 rancher rebuild
« 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.

Offline KilliansRedLeo

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Re: 55 rancher rebuild
« 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?
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

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Offline hadji

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Re: 55 rancher rebuild
« Reply #4 on: July 08, 2014, 02:37:01 pm »
I did not. How would they affect performance?

Offline man of stihl

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Re: 55 rancher rebuild
« 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.
Ron

Offline man of stihl

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Re: 55 rancher rebuild
« Reply #6 on: July 08, 2014, 08:06:25 pm »
Part # 505 31 07-51
Ron

Offline 3000 FPS

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Re: 55 rancher rebuild
« 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.
PP 505, 475, 445.

Offline hadji

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Re: 55 rancher rebuild
« 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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