Cold weather affect on saws

120770

120770

Location
The Kingdom of Fife
Anybody having similar problems with the cold weather affecting there saws. Well the weather here in central Europe has been pretty damn chilly recently about 0 to -10 (32f- low 20´s for our friends across the pond).

What has been happening is your saw is working away no problem then it just wont want to start again in this damn cold chilly weather. Then when you let it rest for a while thinking that you might of accidently flooded it, you go to pull it and it will crank up, but as soon as you put your finger on the trigger it dies of death. The big saws 046 & 066 have had them running them on winter sttings and they are causing no problem but it is our MS 460 that has died also the bosses MS200T went all strange there on Thursday past. Had them in the workshop and checked them over but to no avail.

Anybody got any solutions...............apart from waiting for springtime and warmer weather. Is a possible fuel carb thing?

Scotty /forum/images/graemlins/confused.gif
 
The funny thing is the saw was running no problem while crossing a pile of timber, then when i stopped to refuel it, it would not wont to start again. Then once it would crank up on half choke it would run the chain a few times then cut out.

Scotty
 
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... when i stopped to refuel it, it would not wont to start again ...

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Could it be some old/bad gas? I have had gas that sat just a bit too long at various times and the saws acted something like this (harder to start and hesitation on acceleration). I mixed up some fresh mix and everything was back to normal.

Cary
 
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. Then when you let it rest for a while thinking that you might of accidently flooded it, you go to pull it and it will crank up, but as soon as you put your finger on the trigger it dies of death.

Well sir,that faltering on hitting the throttle is normaly an indication that the low speed jet is set too lean .As a general rule the saws thrive on slightly cooler air,makes em frisky as young horse colts,so to speak.
 
Are any of you guys using Stihl saws with the little window that opens to let air from the cylinder head enter the air filter chamber for winter time use? I admit I leave mine set on the summer side of the winter/summer switch. I don't know if it makes a difference or not.

Does Husky use a similar system?

Dan
 
I use it on my 200's. I was told that moisture will begin to create problems in the mixture in temps as high as 39*F. That's not real cold to me, so I switch them when it gets colder than that for more than a day or two. Or if they start to run a lil rough.
 
Mike, The saw was running real good before it decide to Konk out, it is just one of those really baffling things that does your head in, we are running the Stihl Moto mix fuel. Maybe it is more than just the cold weather, that is affecting them.



Scotty
 
Had enough of them took them to the Stihl Shop today , only problem we are a few saws short for the 36m high Duggy Fir that we have to do on Thursday. Will be interesting I think, Im doing the lowering. As they say let out big.
Least the 088 is working.


Scotty.
 
I would check the saw over. Make sure no vents are clogged. Change out plug clean the filter and adjust the carb. Chain saws should run fine in 32 degree weather. You problem is saw specific and really weather related.

Cold weather and altitude does play a part in density altitude and fuel to air ratio. But like I said 32 isnt that cold.
 
Hey there BigJon, Well we got em back from the the Stihl shop and everything is running smoothly, they replaced the carbs completely on the both 046´s they were getting old and the fuel has been changed in the last year to the Stihl MotoMix. So maybe a number of problematic procedures are revelant in all our theories of what went wrong, But the strangest one was the only a 6 month old MS200T needed a complete new carb, I know by other posts that Stihl have had carb problems throughout last year. So I saw it for real this time round. Got the bosses 020T back but it still sounds strange. I just dont get that fine tuned ear thing going on with it.


Scotty


Like the Rodeo picture, it is the best show on earth. Saw my first one when I was 7 years old out in Texas (THE COLEMAN RODEO) while visiting family, then 20 years later in Fraser Colorado. let them Bulls Rip YEEHAA
 
There seems to be a lot of problems on a few newer Stihl carbs.I wonder what that deal is.I should be getting one from Oz here in a few days that has been a thorn in the owners side.
I will do a pressure check etc and if I can come to any conclusion. I will make a post here and at the TH about what,if any thing I find.
I don't claim to be the best wrench turner on the planet but I've never seen a carb I couldn't get working properly,other than a Mac /Walbro flatback.
From what I've been hearing,there is a lot of problems on the MS 200 ts'.There has to be a reason,maybe I'll get lucky and find it.
 
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From what I've been hearing,there is a lot of problems on the MS 200 ts'.There has to be a reason,maybe I'll get lucky and find it.

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Zero problems with the carbs on my two MS200T's nor have I heard of many problems.
 
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From what I've been hearing,there is a lot of problems on the MS 200 ts'.There has to be a reason,maybe I'll get lucky and find it.

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Zero problems with the carbs on my two MS200T's nor have I heard of many problems.

[/ QUOTE ]We travel in different circles Dan .It could very well be that I hear things you don't or vica versa.For what it's worth,I have rebuilt the carbs on several ms 200's for people in the last year.The saws were about a year and a half old at the time.In those examples , a rebuild kit was all that it took to get them humming away,good as new.I would think that more length of time would have elapsed before a rebuild would have been neccesitated,opinions on that,of course,vary.

It just seems odd to me that the carbs,in the gents example,were shot to the point of not being rebuildable.
 
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It just seems odd to me that the carbs,in the gents example,were shot to the point of not being rebuildable.

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I think that is odd too. I would not be surprised that instead of rebuilding the carb that the shop just puts on a new carb and writes up the bill.

What are you finding with the rebuilds you do? Is the gasget material going bad?
 
Fuel pump check valves are stiff but the main diaphragm is still supple.It could be the fuel.They change the danged stuff seasonaly for pollution reasons,so they say.
Then again,I live in a northern climate and they may not change additives in the gasoline in areas that don't get as cold in winter.
The fuel thing is only a guess on my part but those saws showed the deteriation of a 20 year old saw,on the carb innerards.
 
Wonder if it's from alcohol in the fuel.

Or a bad batch of gaskets.

I'm near Atlanta and we might not get winter gasoline mixes down here.
 
If Carb is icing up.

On the old saws where you can't open up the heat to the carb if you take the air filter off and set in the truck with heater on for about 5 minutes seems to solve the problem.


Mike
 
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