new 441 c-m problems

[shillo]

Having a nightmare with my new 441.

 

She was beautiful to start with, until after a month she stalled mid cut and would not start again. Back to the dealer who fitted a new carb. Its been crap ever since. it just keeps stalling at idle, put the saw down to shift a log, as soon as you pick it up, it stalls.

 

When she is running flat out she sounds 'bubbly' like. and she stalled mid cut again today whilst chogging down but managed to get her going again this time.

 

Its been back to the dealer at least 5 times now, the last time they sent it back to stihl, they said it was fine and suggested changing the bar and chain???? the chain is only a quarter worn.

 

Radmore and tuckers don't want to know any more.

 

any body any ideas?

 

I bought a new 550 the same time, thats been back the same number of times at least and is now in again as it seized up???

 

busiest I've ever been at the moment, 2 saws down, good old faithful 440 and 240 back in action, both about 10 years old and still don't miss a beat!

[shillo]

anybody??

[MattyF]

Are you running decent 2 stroke and not using sainsburys or tesco fuel?

 

 

Sent from my iPhone using Arbtalk

[shillo]

I did wonder that myself so have recently switched to texaco premium fuel with stihl low smoke oil

[Burgess]

Has anyone looked at the computer?

[spudulike]

And that is why autotune can be a PITA.

 

I would suggest taking the exhaust off and make sure the piston is still OK. Take the plug out and look at its colour.

The bubbly noise may be an over rich mix - when the plug is out, turn the ignition off, turn it upside down and pull it over hard a few times to expel any puddled fuel.

 

If it doesn't start after that - see if the plug is damp/wet after trying to start it - if it is dry, you have a carb issue. If it is wet, check the spark by earthing the plug on the cylinder AWAY FROM THE PLUG HOLE (fire risk) and pull it over to see if you have spark.

 

If all that is OK, see if you can start it and go from there.

 

I do not know much about these autotune saws - the dealer has special interface connectors and programs to download what is going on - I don't have such luxury:thumbdown:

[Daniël Bos]

I'd have thought there was a clue in "as soon as you pick it up it stalls"?

I'm by no means an expert but I'd say that there is a mechanical issue (air leak, pinched/cracked fuel line, that sort of thing) that becomes worse when you move the saw in on particular way, ie when you pick it up?

[shillo]

Thanks for the replies guys.

 

Phoned r&t again today and its going back in again, both of us are getting very grumpy, he said he tried it and it was fine, yet I've used it today and it stalls after nearly every cut.

[Rich2484]

I will never buy a stihl auto tune saw. Stihl never did get the hang of it. They tried it on the ms280 and it failed miserably.

 

Leave the auto to husky and stick with manual tune.

[spudulike]

Thanks for the replies guys.

 

Phoned r&t again today and its going back in again, both of us are getting very grumpy, he said he tried it and it was fine, yet I've used it today and it stalls after nearly every cut.

 

The stalling after each cut is and interesting one, it can be the saw running too rich and puddling the excess fuel in the crankcase, may be and air leak or even the opposite - too lean.

 

Unfortunately you can't tell what the auto tune is doing - is the plug the correct colour - light tan?