Author Topic: Husqvarna 371xp ported  (Read 854 times)

0 Members and 0 Guests are viewing this topic.

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 22581
  • Karma: 591
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: Husqvarna 371xp ported
« Reply #10 on: August 08, 2013, 04:39:45 pm »
371 runs and cuts good IMO.  Cutting the same ash log I been testing in.   
REDNECK Saw Repair Getter Done

Offline cowroy

  • 4 cube
  • **
  • Posts: 62
  • Karma: 2
Re: Husqvarna 371xp ported
« Reply #11 on: August 08, 2013, 05:32:26 pm »
Glad you figured it out! I have never heard of this before which is great because I never knew you could have it too tight.

Online 3000 FPS

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 4547
  • Karma: 292
  • Location: Carpenter, Wyoming
Re: Husqvarna 371xp ported
« Reply #12 on: August 09, 2013, 12:23:43 am »
Yes after reading this, how does a tight gap keep the saw from running?  I did not think it would throw the timing off.   
I have a saw that I dropped the cylinder on and could no longer get a business card in for the gap and since it was not hitting I left it alone.   The saw runs fine.
PP 505, 475, 445.

Online 3000 FPS

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 4547
  • Karma: 292
  • Location: Carpenter, Wyoming
Re: Husqvarna 371xp ported
« Reply #13 on: August 09, 2013, 12:26:07 am »
I got pics of outside cylinder.  No mahle anywhere.

Also before pulling cylinder I had another thought.  Called owner and ran it by him I got a ok to do.

Anyhow the saw has spark and fuel and pops a couple times.  So I start thinking timing.  Pull it down again get ready to remove flywheel then I thought to myself I will check timing before pulling fly off.  It all seemed normal except one thing I noticed by eyeing it.  Coil gap looked real tight. So I tried to slide a business card in there and bingo.  Loosen coil and Set gap fired up.  No marks where it had contacted the flywheel etc.

Retuned carb and seems good so far.  Checked squish on front and rear with cyl still attached, before all of the above and was getting 18.5-20 squish which is super tight for only 148psi.  IMO. 

I agree with that tight of squish I would expect up around 180 to 200 psi on the compression.
PP 505, 475, 445.

Offline Cut4fun

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 4334
  • Karma: 189
  • OHIO REDNECK
Re: Husqvarna 371xp ported
« Reply #14 on: August 09, 2013, 12:30:43 pm »
how does a tight gap keep the saw from running?

I was hoping someone would be able to tell me.   It's ran for 6 months like this before the issue of no start. 

 I just wonder how it was running before the no start, power wise? Makes me wonder if the spark was weak or what, even though my tester just shows spark.  Just glad putting the correct gap fixed that part or she would have been pulled down further.
REDNECK Saw Repair

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: Husqvarna 371xp ported
« Reply #15 on: August 09, 2013, 01:31:03 pm »
I think the coil was touching just enough to short it out. I wasn't making a noticeable mark on the coil armature or the flywheel. It didn't always touch but the bearing eventually became loose enough that it did. Most likely the coil armature and the flywheel only touched when the magnets both came around as that was when the magnetic attraction was the strongest.
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 . . .

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 22581
  • Karma: 591
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: Husqvarna 371xp ported
« Reply #16 on: August 09, 2013, 05:25:53 pm »
371 and the 394 started right up and cut today. 

660mag was over to test cut with them both too.   Good talking with you and Thanks for the tree ID. 
REDNECK Saw Repair Getter Done

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: Husqvarna 371xp ported
« Reply #17 on: August 09, 2013, 08:42:52 pm »
Seems to me those grapes are from the root stock and not from the graft? They were more like muscadines or mustang grapes and were good too - just not what was intended.
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 . . .

Offline SawTroll

  • Nitro Hotsaw
  • *******
  • Posts: 1196
  • Karma: 70
  • Information collector
  • Location: Troms, North Norway
Re: Husqvarna 371xp ported
« Reply #18 on: August 09, 2013, 10:53:20 pm »
As far as I know, the 371 may have a different intake from the 372, and it also is more likely that it has the smaller HD-6 carb, and not the HD-12.

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: Husqvarna 371xp ported
« Reply #19 on: August 09, 2013, 11:09:55 pm »
My 371 has a HD12B but I didn't buy it new. 371's are pretty old and some things may have been changed on them for mine also has a 372 cylinder and not a 371 not that there are any internal differences.
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
37 Replies
1686 Views
Last post August 20, 2014, 11:35:33 am
by JohnG28
7 Replies
708 Views
Last post December 04, 2011, 03:28:34 pm
by Al Smith
108 Replies
1412 Views
Last post March 07, 2014, 10:47:29 am
by KilliansRedLeo
16 Replies
385 Views
Last post May 02, 2014, 09:50:35 am
by KilliansRedLeo
3 Replies
223 Views
Last post July 31, 2014, 01:22:55 am
by 3000 FPS
4 Replies
234 Views
Last post August 09, 2014, 04:39:02 pm
by SawTroll
1 Replies
182 Views
Last post November 08, 2014, 06:33:26 am
by Moparmyway
7 Replies
191 Views
Last post January 28, 2017, 09:39:04 pm
by Cut4fun .
2 Replies
339 Views
Last post February 16, 2018, 10:41:31 pm
by farmboy
0 Replies
177 Views
Last post March 21, 2019, 10:42:16 am
by Cut4fun .