Author Topic: husqvarna 455 rancher  (Read 565 times)

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Offline 3000 FPS

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Re: husqvarna 455 rancher
« Reply #10 on: April 27, 2014, 11:21:06 am »
I went out and checked the setting on the high and Lo on my 455 this morning.

I am at 6000 ft so I tune a little more lean.   I no longer have limiters I took them off a long time ago.

The high side was just short of 2 turns out.
The Lo side was 1 3/4 turns out.

This saw runs top notch and I have no complaints about it and keeps up with any other saw in the 55cc range.
I run an 18" bar 68dl.
PP 505, 475, 445.

Offline ub54

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Re: husqvarna 455 rancher
« Reply #11 on: April 27, 2014, 04:40:26 pm »
I got wrapped up in yard work today but tomorrow it's supposed to rain and I'm spending the day on it if needed. I WILL get back to you all , and thamx so far.

Offline ub54

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Re: husqvarna 455 rancher
« Reply #12 on: April 28, 2014, 07:12:36 pm »
Well , today I ran the 455 with lo speed set at 1.5 turns out and the hi at 3 turns out. Same problem persists. Still runs perfect at full choke , and off choke will rev up to half throttle but past that it bogs down and wants to die. So I'm right back to square one. Any other ideas ? I'm in try anything mode now. There is a bridge close by I can throw it off of.

Offline 3000 FPS

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Re: husqvarna 455 rancher
« Reply #13 on: April 28, 2014, 08:46:31 pm »
Well , today I ran the 455 with lo speed set at 1.5 turns out and the hi at 3 turns out. Same problem persists. Still runs perfect at full choke , and off choke will rev up to half throttle but past that it bogs down and wants to die. So I'm right back to square one. Any other ideas ? I'm in try anything mode now. There is a bridge close by I can throw it off of.

Now you have to pressure check it to see if you have an air leak somewhere.
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Offline ub54

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Re: husqvarna 455 rancher
« Reply #14 on: April 29, 2014, 12:11:47 am »
Don't have the gauge to do that, which means i'll have to take it somewhere which I hate to do. The part that get me is that because of the way the carb is set up, you'd think the leak would have to be a hole the size of a dime. Being sarcastic there of course.

Offline 3000 FPS

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Re: husqvarna 455 rancher
« Reply #15 on: April 29, 2014, 12:20:38 am »
I have two of these saws and have not had the problem your talking about.   I have worked on a number of them in my part time job and have never seen an air leak but I did have to replace a carb on one here about 3 weeks ago.   

The way I see it is that you have an air leak or a bad carb.

  You could also take the carb off again and make sure the intake is not allowing air in or a messed up gasket.   
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Offline KilliansRedLeo

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Re: husqvarna 455 rancher
« Reply #16 on: April 29, 2014, 08:54:13 am »
You can get a vac/pressure tester from Harbor Freight cheap or make one from an old blood pressure cuff. You can spend big money for them but it is not really necessary because the pressure test is a simple matter of comparing a beginning pressure to an ending pressure over time. Husqvarna says beginning pressure is 80 kPa if after 30 seconds the reading is above 60 kPa you are good to go.
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Offline alsled

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Re: husqvarna 455 rancher
« Reply #17 on: April 29, 2014, 09:09:58 am »
Plugged hi speed oriface in carb body, fuel pump not adjusted right?

Offline 660magnum

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Re: husqvarna 455 rancher
« Reply #18 on: April 29, 2014, 09:17:31 am »
Don't have the gauge to do that, which means i'll have to take it somewhere which I hate to do. The part that get me is that because of the way the carb is set up, you'd think the leak would have to be a hole the size of a dime. Being sarcastic there of course.










i

Pressure testing . . .

http://chainsawrepair.createaforum.com/ported-saws/pressure-testing/msg38039/#new
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Offline ub54

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Re: husqvarna 455 rancher
« Reply #19 on: April 29, 2014, 10:33:13 am »
The pump lever at the needle valve was the first thing I normally check when rebuilding a carb, this time for whatever reason I Didn't and when I did check it it was way high, to the point it was flooding out. I adjusted it to level but I may need to raise it ever so slightly.I'm going to do that in a bit. I will get back to you on that because I had been thinking of doing it any way . And thanx to all for hanging in there with me. I'll figure it out I always do .   




 

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