Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Husqvarna => Topic started by: hadji on July 07, 2014, 03:00:49 pm

Title: 55 rancher rebuild
Post by: 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?
Title: Re: 55 rancher rebuild
Post by: man of stihl on July 07, 2014, 11:27:56 pm
Why did you replace the original p&c?
Title: Re: 55 rancher rebuild
Post by: hadji 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.
Title: Re: 55 rancher rebuild
Post by: KilliansRedLeo 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?
Title: Re: 55 rancher rebuild
Post by: hadji on July 08, 2014, 02:37:01 pm
I did not. How would they affect performance?
Title: Re: 55 rancher rebuild
Post by: man of stihl 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.
Title: Re: 55 rancher rebuild
Post by: man of stihl on July 08, 2014, 08:06:25 pm
Part # 505 31 07-51
Title: Re: 55 rancher rebuild
Post by: 3000 FPS 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.
Title: Re: 55 rancher rebuild
Post by: hadji on July 10, 2014, 10:13:35 am
Thanks for the info guys. As you can tell I'm pretty new at this.