Saw dies under load

[THALL10326]

DING DING DING DING....We have a winner!!!

Went out tonight and it started up fine. Ran for a while and started acting squirrelly so I loosened the tank cap. Bam, back to normal. I am assuming the tank gets pressurized when the vent is clogged and won't feed enough fuel?

This would make sense since it would run for a bit when I put gas in it but then after running and building the pressure differential it would bog down and die if pushed.

I will have to get out there and get that vent cleaned out and go back to the woods in a couple weeks to make sure but I think I found the problem thanks to all you guys' help. Thanks again.

Can't beat that Lakeside my friend. He's the chainsaw wizard on this forum. I've learned alot from him myself. Good to hear ya got ya problem figured out.

 

[mking7]

Can't beat that Lakeside my friend. He's the chainsaw wizard on this forum. I've learned alot from him myself. Good to hear ya got ya problem figured out.

agreed 1000000000000%....he's helped me through what should have been a pretty easy repair....and I would have probably given up if it hadn't been for Lakeside and others. So thanks again....

 

[Lakeside53]

I find small engine problems interesting.... but there is a limited set of solutions to the problems. Imagine you take it to a dealer, or, to me. I have to figure out what's wrong in short order and get it back to you.. If it takes more than 10 minutes to diagnose, and 30-40 more minutes to fix we're both out of pocket... In a typical day I'll fix 8-15 saws/trimmer/whatever... unless I auger-in on a real bad one or two... and yes, sometimes I still get bogged down..


I'm not allowed to give up.. I have to either fix it or tell the customer what's wrong and why it's not worth it... and I don't cop out by making up BS..


Diagnotic by remote, like on AS, is another challenge...

 

[Universe]

Where is the tank vent on a 353 and how do you clear it? I think I have the same issue. Thanks.

 

[mking7]

Funny follow up to this issue....

I had run the saw when I replaced the tank vent and it seemed to run well but I hadn't yet gone out to cut for an extended period (long enough to believe the problem was fixed but not a full tank).

Well, this past weekend I was out cutting a bunch of down trees it was cutting great and all of sudden it started acting like it was starved for fuel again. You can't imagine how mad I was to experience the same symptoms. It really ruined my day to an extent so I threw the 260 back in the truck and grabbed the 361 and finished the day out. I think you know where this is going.....well today I was at work and stewing over the saw when it dawned on me that I didn't top the tanks off before I started and that I had been cutting a decent amount on the saw to test it a few weeks back. Well, I have never been happier to realize I'm an idiot. Yep, the saw was starved for fuel....cuz the tank was empty.

 

[West Texas]

Sorry to hear that; you know those Longhorn guys are going to start giving you the Aggie jokes now. :rockn:

 

[mking7]

Sorry to hear that; you know those Longhorn guys are going to start giving you the Aggie jokes now. :rockn:

haha..Ya, you're probably right. It was just too funny to not share...