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lehman live edge slab

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Sorry! my intent was not to single out your comment rather a general reply to the fuel being used not being an issue in non AT saws.

Perhaps it does have something to do with AT/MT saws running leaner and thus hotter as

farminkarman pointed out.​

Not sure this is the case so far none of the tree service saws have had any starting issues not related to fuel. The heat hasn’t given them any issues on the mtronic saws, John has 2 400’s a bunch of 362’s, 500i and only 201 tcm’s for top handles now. They have ran and started well from -20 in winter to 100 above over last 15 years or so. He’s had ms-362’cm saws since they came out.
 

IffykidMn

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Not sure this is the case so far none of the tree service saws have had any starting issues not related to fuel. The heat hasn’t given them any issues on the mtronic saws, John has 2 400’s a bunch of 362’s, 500i and only 201 tcm’s for top handles now. They have ran and started well from -20 in winter to 100 above over last 15 years or so. He’s had ms-362’cm saws since they came out.
As stated previously I am about feed up with my 572XPG hot start issues, at this point even a non ported 462 or 500i is looking good.
 

farminkarman

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As stated previously I am about feed up with my 572XPG hot start issues, at this point even a non ported 462 or 500i is looking good.
Just curious...when your 572 won't restart hot, have you pulled the plug?

Edit: I'm asking because I haven't had hot restart issues with 572's...but they were/are ported and also had the fuel tank vent modified. I have had issues with the early 550's and 562's.
 

redneckhillbilly

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are the people experiencing hot start issues leaving the saws in the sun when not using them?
just curious because my 5 series start fine in any weather so far
 

IffykidMn

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Just curious...when your 572 won't restart hot, have you pulled the plug?

Edit: I'm asking because I haven't had hot restart issues with 572's...but they were/are ported and also had the fuel tank vent modified. I have had issues with the early 550's and 562's.
Newish stock saw probably less than 50 tanks. saw started hard when hot but always eventually started, the final nail was Fri afternoon high 90s saw refueled in the shade fuel can in the shade 3 guys tried restarting the saw to no avail :BangHead: we did not pull the plug I grabbed a non AT saw to finish the afternoon and have not picked up the 572 since. I have had good luck with my 592s but getting too old:eek:🥴 to drag them around the woods for felling.
 

Squareground3691

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Newish stock saw probably less than 50 tanks. saw started hard when hot but always eventually started, the final nail was Fri afternoon high 90s saw refueled in the shade fuel can in the shade 3 guys tried restarting the saw to no avail :BangHead: we did not pull the plug I grabbed a non AT saw to finish the afternoon and have not picked up the 572 since. I have had good luck with my 592s but getting too old:eek:🥴 to drag them around the woods for felling.
Have you tried duel porting the muffler, and open up factory exhaust if you haven’t those, 550, 562,572 , are to restricted from factory, if anything to get the heat out of engine,
 

farminkarman

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Newish stock saw probably less than 50 tanks. saw started hard when hot but always eventually started, the final nail was Fri afternoon high 90s saw refueled in the shade fuel can in the shade 3 guys tried restarting the saw to no avail :BangHead: we did not pull the plug I grabbed a non AT saw to finish the afternoon and have not picked up the 572 since. I have had good luck with my 592s but getting too old:eek:🥴 to drag them around the woods for felling.
I don't blame you! I have wondered if too much pressure builds up in the tank on the 572 and causes the carb to flood the saw.
 

Jusgunn3

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I had an older 572xp that I think was a 2019, it didn’t like the hot weather either. Last summer it was giving me problems on hot days when refueling. Ended up trading it for another saw. I think I put a new plug in it but not 100% certain.
 

IffykidMn

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Have you tried duel porting the muffler, and open up factory exhaust if you haven’t those, 550, 562,572 , are to restricted from factory, if anything to get the heat out of engine,
The saw 2024 mfg is not duel ported but the internal baffle was opened 1/2"X3/4" between its first week of usage and last weeks usage with no apparent change in hot start issue, saw did seem to run a bit stronger when cutting but may have been placebo effect no harm no fowl felling partner did remark that he thought the saw had more zip than his 372s.

Pressure buildup in the carb could be causing flooding but having just refueled the saw I do not think any pressure could have built that quickly unless it had already somehow flooded before refueling.

Just pulled the spark plug which looked fine but I replaced anyway just because I had it out, will find out next week if it helped if not the saw might end up under the bogie wheels of the forwarder. 🥴

I have no brand loyalty and run Stihl, Husky, Echo and a couple of Chinese saws of various models from 25-120cc, I may even buy another 572XP🥴 but right now a 462 or 500i is looking pretty likely.
 

Mastermind

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The saw 2024 mfg is not duel ported but the internal baffle was opened 1/2"X3/4" between its first week of usage and last weeks usage with no apparent change in hot start issue, saw did seem to run a bit stronger when cutting but may have been placebo effect no harm no fowl felling partner did remark that he thought the saw had more zip than his 372s.

Pressure buildup in the carb could be causing flooding but having just refueled the saw I do not think any pressure could have built that quickly unless it had already somehow flooded before refueling.

Just pulled the spark plug which looked fine but I replaced anyway just because I had it out, will find out next week if it helped if not the saw might end up under the bogie wheels of the forwarder. 🥴

I have no brand loyalty and run Stihl, Husky, Echo and a couple of Chinese saws of various models from 25-120cc, I may even buy another 572XP🥴 but right now a 462 or 500i is looking pretty likely.
I can make you a pretty good deal on a 462 right now.
 

IffykidMn

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Just curious...when your 572 won't restart hot, have you pulled the plug?

Edit: I'm asking because I haven't had hot restart issues with 572's...but they were/are ported and also had the fuel tank vent modified. I have had issues with the early 550's and 562's.
What is the fuel tank vent modification? :thinking:
 

Duane(Pa)

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The vapor pressure of modern gasoline is absurdly low. I was running my 038 in some recent hot weather. The normally rock steady carb went out of tune. Much dicking with screws ensued to no avail. I opened the fuel cap to a woosh and the mix was bubbling/boiling! I've seen that in old school, metal Homlites, but NEVER in a saw with an iso mounted tank/handle. EF90, which had been stored in a sealed metal can.
 
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