How to remove muffler from jonsered 670 champ

[Beaz]

I picked up a Jonsered 670 champ. Seems to have poor compression. I dont plan to repair or rebuilt it myself but I'd like to get familiar with it and what's wrong before sending it in to my local guy. Novice curiousity. I've removed the two longer Allen key bolts that pass through the muffler, but the muffler does not want to come off. Is there something I'm missing that's still holding it on? Could it just be stuck on and need some pb blaster to get it separated? Many thanks.

 

[805 McCulloch]

There should be a bracket in front of the muffler that you remove first then there are two screws holding the muffler and gasket against the cylinder. Here's a IPL for the 670
http://www.jonsered.com/ddoc/JONI/JONI1994_AAaa/JONI1994_AAaa_I9400009_.pdf

 

[Beaz]

There should be a bracket in front of the muffler that you remove first then there are two screws holding the muffler and gasket against the cylinder. Here's a IPL for the 670
http://www.jonsered.com/ddoc/JONI/JONI1994_AAaa/JONI1994_AAaa_I9400009_.pdf

Thanks for the IPL! I forgot to mention that I removed that bracket as well. Still won't budge.

 

[president]

look at the bolts that secure the felling dogs
on husky,s the top bolt also holds part of the
bracket

 

[Cantdog]

look at the bolts that secure the felling dogs
on husky,s the top bolt also holds part of the
bracket

Yep.....once that's removed and it still seems stuck use a block of wood and give it a gentle rap with a hammer......should come loose pretty easily.......I assume you've already removed the two bolts 725 52 70 55.....