Hot weather and chainsaws

toppers

toppers

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Oct 15, 2016
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Ohio
I see a lot of comments on this forum about how bad hot weather is for chainsaws, avoid it, etc. What's the deal with this? I've been running all models of saws in hot weather for years. Except for when I don't let a Stihl idle for a second in hot weather before shutting off, never had an issue.
 
Maintenance supervisor

Maintenance supervisor

Every 100yrs, All new people...
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South Carolina
Heat is always the enemy of any combustion engine, premature wear of p/c , but if you are careful and heavy on maintenance it shouldn't be an issue.
The only heat related problems I've had is with fuel boiling in the older mag tanks.
 
Bob Hedgecutter

Bob Hedgecutter

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The way I think about it, is air cooling and lack of access to that air.
It does not need to be real hot weather to cook up a saw- I have done so in below 20 degrees Celsius!
Ride an air cooled dirtbike on a hot day and the air is being forced over/through the cooling fins of the cylinder as you ride- cake that cylinder in mud and let it dry on- see if the results are the same.
A dirty saw with cylinder fins packed full of dirty oily sawdust wont cool as efficiently as a cleaner cylinder will.
Work a big saw hard with a big bar buried and muffler up against the log face- won't cool very well.
Couple in stinking hot air in the first place and heat transfer from fins to air is not great.
Saw tuned for cooler conditions, then worked hard in hot conditions- not great.
Substandard oil or not enough oil in the fuel mix, stinking hot day- not good.

If your saw is up to the conditions, tuned to the conditions and sawyer is not a complete numbskull- you can saw in most any weather.
Overtax a saw and create the wrong conditions and you can burn one up in most any weather as well. :yes:
 

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