Husqvarna 439 Is A Bust

Bought this saw in March but did not get to use it until June.

The problems that I've been having is with anything over 6-8 inches, the chain stalls in the cut. Not enough high end rpm. To start it when warm, you have to hold the throttle wide open and the spark plug fouled after less than 2 tanks of fuel.
The saw is now back to the dealership for the third time:,3 weeks the first time, 4 weeks the second time and who knows how long this time. The third time I took it back, I also took a 8'x8" timber and showed the mechanic how it dies in the cut. Hopefully they believe me that there's something wrong.
For myself I think the saw is running to rich! Any ideas what else it might be?

 

I'd agree with that diagnosis...that, and some of those saws are real dogs until you get a few tanks of fuel through them...put the two things together and yuck!

 

Maybe a less aggressive chain with higher rakers would help. If that’s a manual adjust carb, have you tried tuning it?

 

I had problems with a new Stihl that 2 dealers could not seem to fix. I contacted Stihl's regional manager and he picked up the saw from the dealer and took it to Stihl H.Q for repairs. It's run great since. Maybe try that with your Husky?

 

No I haven't tried to do an adjustment of the carb. Counter clockwise for leaner ,clockwise for richer?

 

Just the opposite. Out more in less.

 

Thankyou!

 

I had a problem with my first real chainsaw just over a year ago (stihl 310) it would run fine for 20 minutes and start stalling out. I took it back to the same dealer three times, there was never anything wrong with it they said so I took it to another stihl dealer, they told me the same but when I came back here to run it in some wood it did the same.

After getting mad about it in the woods, I went and bought a new 311. After I bought the 311 I was offered a deal on a parts saw that I could use the carb out of, I changed out the carb and all my problems went away on the 310.

My 310 was around 12 years old at the time.

 

New saw shouldn’t act up like that. Get the dealer to fix you up. If needed, demonstrate what it’s doing in the parking lot.
But I do agree, it should liven up after a few tanks. My 357 gained a bunch, and that was the first time I really experienced it. So much so it could be felt. Kinda like adding some funny fuel to the tank.

 

campinspecter , I'm not sure if this would matter but I was told by both dealerships that the difference in elevation shouldn't matter especially since my other saws were working fine.

The dealerships elevation in that town is 377 feet and we're at just under 1000.

 

You were right about the elevation. Both other saws, the 390 xp and the 562 xp, worked perfectly but the 439 ran rough at full rpm and would stall in the cut. When it warmed up, it needed full throttle to start. So I took the 8"x 8" timber and 439 to the dealership which is at sea level and it would not cut through the block without the chain stopping!

 

Sometimes new saws need love too. Get someone to gut the muffler and retune it.

 

Good thought!
I’d expect the 562 to self tune for it with a tuning cut
I wouldn’t on the 390 since it’s not auto tune. Maybe theres more grace in the bigger carb.
Owners manual should speak specifically to the delta in elevation.
Some of your posts are from cutting from magnificent views.
What is the elevation difference from the shop to the harvest?

 

About 2,500' maybe 3,000' .

 

I do believe that is a auto tune saw it looks like the rear handle version of the red max gz3500T it sounds like a auto tune problem I have had a couple saws like that and ended up with new carbs the auto tune saws have a particular starting method after warm up you have to start at a fast idle and wait a few seconds for the "compuker " to do its thing or they run like crap but the problem you are having sounds more like carb trouble the problem is the program that you run on the saw will say it is working correctly I just gave up with a customers saw and put a carb on it and the problem went away even though when I plugged in the saw to my laptop I got the same readings as the old carb I took the old carb apart and found nothing that I could see wrong it tested fine but something was wrong with it the factory would not pay for the new carb so I ate the cost end result is a happy customer and a stumped mechanic as to what is wrong with that carb good luck JB

 

Its not a Stihl! Sorry couldnt resist. I get enough digs from you Husky guys!
Hopefully they get it right this time Alan. Very annoying especially with a new saw!

 

Part of the problem is the counter person is not relying the right information to the mechanic , all she wrote on the work order was Hard Starting nothing about the saw starting with one pull at full throttle when warmed up and stalling in the cut at full throttle .

 

That place needs a different service writer then...that's rediculous. I would make her add details or demand to talk directly with the mechanic...you can do that, it happens all the time at many/most shops.

 

This is another saw I’ve never seen in person
I see that its not auto tune on the ipl
Zooming in I can see the carb adjustment
Starting with the throttle open makes me think it’s rich, like a flooded saw, which would make sense at a higher elevation to me, less air/lower barometric pressure.
Since it has limiter caps, you’ve got a built in insurance. I’d try leaning it out to match the fuel to air ratio.
Turn the idle screw ccw 1/4 turn and turn the low jet all the way cw until it stops. (If it turns more the 270, double check there are limiter caps)
This will lean it out. See how that works and make small adjustments from that.
if you think 3000 feet might make difference, I’d try it, at your 3000’ spot that is.

 

I dropped two saws off at the Stihl dealer today and left specific notes on what was wrong. Guy was typing the problems into computer, but took my notes too.