heating

ccoxva · September 04, 2009, 04:51:52 PM

Hello guys been a while but I removed the spark arestor from my 310 and it getting a little to hot I think. Thats the only mod i've done and it dont seem to me like that would make this much diff??? What do you guys think?? Thanks

beenthere · September 04, 2009, 06:10:02 PM

Don't quite follow.
You think the saw is overheating? and it might be due to removing the spark arrestor?

What are the symptoms of the saw over heating?

What is the history of the saw? time you have used it, etc?

John Mc · September 04, 2009, 09:52:54 PM

Could removing the spark arrestor be causing it to run too lean?

wi woodcutter · September 04, 2009, 11:28:31 PM

Quote from: John Mc on September 04, 2009, 09:52:54 PM
Could removing the spark arrestor be causing it to run too lean?

That is what I was thinking. If you took that out it would make the muffler flow differently, and then the saw would run different. I would look at that before the saw leans out and burns up.

ccoxva · September 05, 2009, 10:14:22 AM

The saw has only been used about 40 hours since new.I think it is leaning out I just didnt know what to fatten up on the card high or low??? I think its getting quit a bit hotter that it did just judging off the heat from the case!! Even the handle is getting hot....

GASoline71 · September 05, 2009, 12:09:38 PM

Don't use it again, until you get it sorted out. I would chance to say there is already possible damage done. Pull the muffler off the saw and check the piston and rings for scoring/scratches.

It's runnin' really lean is what it sounds like to me. Removing a muffler screen should not make the saw run that much leaner if at all. Unless it was clogged. Where I cut I have to use spark screens... and in the 30+ years I have been ruunnin' saws, I have only seen one clogged spark screen.

Gary

Al_Smith · September 05, 2009, 01:06:30 PM

It kind of depends on the saw as to how much they clog .Those which used an impulse oiler seemed to be to most prone to it .

That said though a leaner runner will get hot ,not good .

John Mc · September 05, 2009, 03:46:40 PM

When I switched from a catalytic to a non-catalytic muffler, I had to richen up the high speed mix. I assume this was because the non-catalytic muffler was so much less restrictive.

Just looking at the muffler screen, I figured you'd get the same thing from removing that - eyeballing it, it looks as though you'd almost double the effective size of the opening by removing the screen. Am I off base here?

I'm not saying that's the only problem the OP may be experiencing, but it seems to me it could be part of it.

John Mc

ccoxva · September 05, 2009, 09:41:08 PM

I always run 93 octane so the screen looked like it had never been used except for a little rust. But I just dont think removal would make this much mixture(air/fuel) difference.

ladylake · September 06, 2009, 05:25:28 AM

It was likely lean from the start, if it really screams when held wide open turn the high out untill it slow down some or blubbers a little. Then cut with it if the blubber doesn't clear up soon as you start cutting then turn the high back in untill it does, around 1/8 turn at a time. Does your gas have ethonal? That makes them run leaner. Steve

GASoline71 · September 06, 2009, 10:06:42 AM

I would still pull the muffler off to check the piston and rings... 15 minute job...

Gary

Al_Smith · September 06, 2009, 01:02:40 PM

Well yea 15 minutes for some,45 minutes for me . 42 minutes to find the tools and 3 minutes to pull the muffler :D

GASoline71 · September 06, 2009, 02:10:54 PM

Beer... don't forget beer Al... at least a sixer... so now we're into it for an hour and a half... :D :D

Gary

ccoxva · September 10, 2009, 02:11:15 PM

I dont think iv ran it long enough to hurt anything but knowing how my luck goes???? I think it was lean from the start it would really scream!! Should that help the power much riching the high side?? I second tha beer motion!!!

ladylake · September 10, 2009, 06:08:32 PM

If it's really lean more fuel will help a lot, if borderline lean more fuel might not make a lot more peak hp but will give you a wider powerband that's more forgiving if everthing isn't perfect. Steve

GASoline71 · September 10, 2009, 07:50:18 PM

You would be suprised at how quick damage can be done to a saw runnin' really lean.

Gary

olyman · September 10, 2009, 08:25:50 PM

Quote from: GASoline71 on September 10, 2009, 07:50:18 PM
You would be suprised at how quick damage can be done to a saw runnin' really lean.

Gary

yup. cars can stand it a lot longer, only because they are four cycle, which always has some oil film on the cyl walls. 2 cycle, even with the oil, can really cook quick. especially because of the rpms!!!!

ladylake · September 11, 2009, 04:14:28 AM

Quote from: GASoline71 on September 10, 2009, 07:50:18 PM
You would be suprised at how quick damage can be done to a saw runnin' really lean.

Gary

Thats right, one cut in a large log will melt them down. Steve

sefh · September 23, 2009, 12:16:30 PM

It sounds like you might want to put it back to normal, adjust your carb (richen it a little) and see what happens. You might have been lean from the start.

ccoxva · October 06, 2009, 03:39:30 PM

Good news. Been cuttin alot of wood here lately. Richened the high end cooled er off alot and actually added power!!! 8) ooo and piston looks good.. Thanks guys for all the comments!