Author Topic: Husqvarna 394  (Read 7028 times)

0 Members and 18 Guests are viewing this topic.

Offline mdavlee .

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 1968
  • Karma: 171

  • Total Badges: 31
    Badges: (View All)
    Level 6 Sixth year Anniversary Fifth year Anniversary 1000 Posts Fourth year Anniversary 500 Posts
Re: 394
« Reply #70 on: June 24, 2015, 11:26:29 am »
Looks good. You'll like the stumping power.

Offline jmester

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2106
  • Karma: 171
  • Location: MD

  • Total Badges: 36
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Level 6
Re: 394
« Reply #71 on: June 24, 2015, 11:28:30 am »
Got it all together. Still need to tune the saw but very happy with how it turned out. Would like to thank some members for there help in getting the parts I needed to get it done. Dave @ chainsaw conservation components. Nate @ performance outdoor Equipment. And Jim @ HL Supply and Scott @ Chainsawr.
FEAR NO TREE. FEAR GOD.

Offline jmester

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2106
  • Karma: 171
  • Location: MD

  • Total Badges: 36
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Level 6
Re: 394
« Reply #72 on: June 24, 2015, 11:30:12 am »
Thank you. Roger has my case half done getting welded. So once I get it I will be back on the polished case 660.
FEAR NO TREE. FEAR GOD.

Offline jmester

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2106
  • Karma: 171
  • Location: MD

  • Total Badges: 36
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Level 6
Re: 394
« Reply #73 on: June 24, 2015, 03:10:59 pm »
Well got it tuned. I am thinking I set the metering lever a little to low for the high speed screw is only about a half turn out to run about 11,500. The low speed is about 1.5 turns out to take out the hesitation coming off idle. But maybe I am not that familiar with husky and settings like that are normal. Any thoughts ? I know my 084 is similar in that the H jet is only like a 1/4 turn out and the low is 1 to 1.5 out. Other than that seems like it is going to be fun.
FEAR NO TREE. FEAR GOD.

Offline srcarr52

  • 6 cube
  • ****
  • Posts: 288
  • Karma: 94
  • Location: IA

  • Total Badges: 22
    Badges: (View All)
    Third year Anniversary Level 5 Second year Anniversary 100 Posts Topic Starter Search
Re: 394
« Reply #74 on: June 24, 2015, 03:22:37 pm »
Well got it tuned. I am thinking I set the metering lever a little to low for the high speed screw is only about a half turn out to run about 11,500. The low speed is about 1.5 turns out to take out the hesitation coming off idle. But maybe I am not that familiar with husky and settings like that are normal. Any thoughts ? I know my 084 is similar in that the H jet is only like a 1/4 turn out and the low is 1 to 1.5 out. Other than that seems like it is going to be fun.

If you have the high side screw only out 0.5 turns and it's turning 11,500 RPM free speed it's drowning in fuel from too high of metering lever setting, too low pop off pressure (weak or wrong spring), or you have a leaking needle and seat.

You should be able to get 12.5-13kRPM with 0.75-1 turn out.

Offline jmester

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2106
  • Karma: 171
  • Location: MD

  • Total Badges: 36
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Level 6
Re: 394
« Reply #75 on: June 24, 2015, 03:52:02 pm »
Yes you are correct. After you said that I realized that I had it backwards. What should the pop off pressure be around 12 to 15 psi?
FEAR NO TREE. FEAR GOD.

Offline jmester

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2106
  • Karma: 171
  • Location: MD

  • Total Badges: 36
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Level 6
Re: 394
« Reply #76 on: June 24, 2015, 04:20:20 pm »
Rechecked metering lever just barely touching the walbro w gauge. The inlet needle begins to bubble at 25psi and blows off at 32psi or so. Seems a little high to me. The metering diaphragm is to slide into the the top and bottom side of the metering lever?
FEAR NO TREE. FEAR GOD.

Offline srcarr52

  • 6 cube
  • ****
  • Posts: 288
  • Karma: 94
  • Location: IA

  • Total Badges: 22
    Badges: (View All)
    Third year Anniversary Level 5 Second year Anniversary 100 Posts Topic Starter Search
Re: 394
« Reply #77 on: June 24, 2015, 04:54:58 pm »
Rechecked metering lever just barely touching the walbro w gauge. The inlet needle begins to bubble at 25psi and blows off at 32psi or so. Seems a little high to me. The metering diaphragm is to slide into the the top and bottom side of the metering lever?

That sounds about right, they are pretty high pop off. Yes, there is a notch in the diaphragm which should slide into the lever.

Offline jmester

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2106
  • Karma: 171
  • Location: MD

  • Total Badges: 36
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Level 6
Re: 394
« Reply #78 on: June 24, 2015, 05:18:50 pm »
I guess the lever was higher than it seemed. Put pressure on the carb and slid the w gauge over the lever and it released the pressure. Lowered it some more to where when the gauge goes acrossed it there was no pressure drop. Have it pressurized now it has only lost 5 lbs in the past 18 mins I think that is plenty good will put it back on and try again.
FEAR NO TREE. FEAR GOD.

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO

  • Total Badges: 39
    Badges: (View All)
    Seventh year Anniversary Sixth year Anniversary Fifth year Anniversary Fourth year Anniversary 5000 Posts Third year Anniversary
Re: 394
« Reply #79 on: June 24, 2015, 06:38:55 pm »
To use those high pressures on the carb inlet to get the metering needle to open doesn't do the pump diaphragm any good?

I just check them with 1/2 atmosphere and see if the hold. I trip the needle manually and then check that the needle re-seats itself and holds.

Sometimes you find a leak around the pump diaphragm instead of the metering valve needle?
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

 

Related Topics

  Subject / Started by Replies Last post
9 Replies
985 Views
Last post April 09, 2011, 09:18:24 pm
by Cut4fun .
2 Replies
648 Views
Last post March 04, 2012, 02:35:58 pm
by Cut4fun .
Husqvarna 455

Started by Cut4fun « 1 2 3 4 » Husqvarna

34 Replies
4931 Views
Last post November 01, 2023, 03:47:53 pm
by Cut4fun .
9 Replies
704 Views
Last post March 23, 2013, 06:59:06 pm
by Magnus
2 Replies
548 Views
Last post April 27, 2013, 04:08:24 pm
by Old Iron Logging
11 Replies
1090 Views
Last post January 01, 2015, 10:09:19 pm
by farmboy
Husqvarna 350

Started by rob67 « 1 2 ... 9 10 » Husqvarna

93 Replies
3612 Views
Last post December 05, 2015, 10:18:36 pm
by Cut4fun .
Husqvarna 365 OE

Started by alsled « 1 2 ... 6 7 » Husqvarna

61 Replies
2530 Views
Last post June 27, 2023, 10:47:27 am
by Cut4fun
0 Replies
183 Views
Last post March 25, 2023, 09:23:29 am
by Cut4fun
0 Replies
152 Views
Last post April 12, 2023, 10:06:37 am
by Cut4fun .