Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Husqvarna => Topic started by: Tzed250 on September 03, 2012, 02:08:04 pm

Title: Husqvarna 550XP Muffler Mod
Post by: Tzed250 on September 03, 2012, 02:08:04 pm: I modded the exhaust on my 550XP. Some pictures and video.

(http://farm9.staticflickr.com/8041/7901835006_84e1e35172_z.jpg) (http://www.flickr.com/photos/41385771@N03/7901835006/)
Untitled (http://www.flickr.com/photos/41385771@N03/7901835006/) by zweitakt250 (http://www.flickr.com/people/41385771@N03/), on Flickr

(http://farm9.staticflickr.com/8321/7901835964_7ed74d3846_z.jpg) (http://www.flickr.com/photos/41385771@N03/7901835964/)
Untitled (http://www.flickr.com/photos/41385771@N03/7901835964/) by zweitakt250 (http://www.flickr.com/people/41385771@N03/), on Flickr

Stock

http://www.youtube.com/watch?v=yWujJUGLBJQ&feature=youtube_gdata_player

Muffler Mod

http://www.youtube.com/watch?v=6vZQcHGODFo&feature=youtube_gdata_player

Oregon 72CL square chisel

http://www.youtube.com/watch?v=3N0tMxR8SbM&feature=youtube_gdata_player
Title: Re: Husqvarna 550XP Muffler Mod
Post by: Cut4fun . on September 03, 2012, 02:46:50 pm: What was the chain on stock and MM video's before the CL video?
Title: Re: Husqvarna 550XP Muffler Mod
Post by: Tzed250 on September 03, 2012, 04:58:38 pm: The chain was Oregon 20LPX with 3-4 sharpenings on it. Fresh edge for
The stock video.
Title: Re: Husqvarna 550XP Muffler Mod
Post by: Cut4fun . on September 03, 2012, 06:39:04 pm: Quote from: Tzed250 on September 03, 2012, 04:58:38 pm
The chain was Oregon 20LPX with 3-4 sharpenings on it. Fresh edge for
The stock video.

I didnt time anything. But that CL looked like the biggest gain in cutting cut times.
Title: Re: Husqvarna 550XP Muffler Mod
Post by: Tzed250 on September 03, 2012, 10:50:01 pm: Folks that haven't used square chisel really need to find out what they are missing.
Title: Re: Husqvarna 550XP Muffler Mod
Post by: brokenbudget on September 04, 2012, 05:59:10 am: most people are cutting wood thats too dirty to bother with square chisel ;)
Title: Re: Husqvarna 550XP Muffler Mod
Post by: HolmenTree on September 04, 2012, 09:45:57 am: I never run square ground for a work chain, but at a GTG or the chainsaw race at the local fair I put my effort into a fine edge on a square ground. Only takes a couple knots and have to touch it up again. :)
Title: Re: Husqvarna 550XP Muffler Mod
Post by: Cut4fun . on September 04, 2012, 12:33:01 pm: Quote from: Tzed250 on September 03, 2012, 10:50:01 pm
Folks that haven't used square chisel really need to find out what they are missing.

I just bet switching the 550 to 3/8 RS or LG LGX would see pretty much the same thing ALMOST.

Least the 50cc 346's I tested on did going from 325 to 3/8 7. ;)
Title: Re: Husqvarna 550XP Muffler Mod
Post by: Tzed250 on September 04, 2012, 01:20:57 pm: It might. I went from .325-7 to 3/8-7, so you have the chain speed increase. My square filed RS has always whipped my round filed RS, so I'm fairly confident this would be the fastest combo on the saw. One great think about square on a limbing saw, very few cutters on a 16" loop!
Title: Re: Husqvarna 550XP Muffler Mod
Post by: Cut4fun . on February 05, 2013, 11:29:51 am: Dang I just found this thread again.

Tz did you open up the little hole that is inside near the cylinder exhaust exit into muffler. I am thinking that needs to be opened too in my pee brain.
Title: Re: Husqvarna 550XP Muffler Mod
Post by: Mastermind on February 05, 2013, 11:57:46 am: I can't remember what John did but I do open the baffle.....