Author Topic: fuel lines  (Read 218 times)

0 Members and 0 Guests are viewing this topic.

Offline Peter Davies

  • 4 cube
  • **
  • Posts: 45
  • Karma: 2
fuel lines
« on: February 19, 2013, 09:59:52 am »
I have just replaced the fuel lines in our old Jonsereds 111s; used plastic hose (green in this case) instead of the original black rubber(?) ones. This plastic hose is much stiffer and caused a problem; it would not allow the filter to fall into the gas when the saw was on its side for felling! The solution has been to use a longer length of hose, soak it in hot water and wind it into a "pig tail". This does allow the filter to follow the gas.

Share on Facebook Share on Twitter


Offline Al Smith

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2749
  • Karma: 167
Re: fuel lines
« Reply #1 on: February 19, 2013, 10:12:14 am »
If you use most plastic tubing which is not actual fuel line it will work but shortly becomes stiff as a board .I've done it myself but it's not the best plan .

I fiddley farted around with Tygon which is fuel line on a 2100 Husqvarna .After I set the damned thing on fire from using stiff plastic .It worked but I finally gave up ,ponyed up the 20 bucks for an original molded line which I should done to begin with rather than play my usual tight wad self . I spent more time trying to save a buck than it was worth .

If you can find the correct sized buna-n type fuel line I think it would work better than platic fuel line.It will stay limber .

Offline aclarke

  • Nitro Hotsaw
  • *******
  • Posts: 1676
  • Karma: 172
Re: fuel lines
« Reply #2 on: February 19, 2013, 01:29:54 pm »
The vinyl tubing sucks. Takes a set and causes issues.   As Al said Tygon works but the reg Buna-n is hard to beat for gasoline

Offline Al Smith

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2749
  • Karma: 167
Re: fuel lines
« Reply #3 on: February 19, 2013, 02:48:29 pm »
I've never had much luck in finding small enough lines to use on a chainsaw .I have used a hodge podge collection of old vacuum lines I saved off of junked out cars .I can't tell buna from rubber .The only way I ever knew if it would hold up it wqs to toss a chunk in a can of gas for couple of days .If it was buna n it would be okay ,if not if it became mush .

I'm sure you could probabley find it if you wanted to spend a couple hours in google land .

Offline Peter Davies

  • 4 cube
  • **
  • Posts: 45
  • Karma: 2
Re: fuel lines
« Reply #4 on: February 19, 2013, 07:54:15 pm »
Thanks guys! The green plastic tube is sold as fuel line by my local agricultural equipment supplier. I would agree that the black buna-n would be best. It is designed to withstand the aromatics in gasolene. I think that finding the right size is the problem. This plastic stuff has changed color (gone pale) in less than a week and swelled by over 10% That means that the fittings I struggled to fit, just about fell off the line!

Offline dynodave

  • 4 cube
  • **
  • Posts: 35
  • Karma: 3
  • Location: Hamilton MASS USA
    • AGTS
Re: fuel lines
« Reply #5 on: March 01, 2013, 03:38:27 pm »
Tygon is a generic family of plastics. The only tygon I use is formula 4040. It is specifically fuel resistant line. I get it 10 feet at a time from McMaster Carr. I understand there is a second formula, but I'm not familiar with it. I have 3 sizes for motorcycles, OPE like garden tractors, and 2 sizes for chainsaws. Holds up well to E-10.
32 saws
ECHO-HOMELITE-HUSQVARNA-McCulloch-PIONEER-POULAN-STHIL

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: fuel lines
« Reply #6 on: March 01, 2013, 04:22:04 pm »
For several years I have just been going up to the local surplus store  (it's a large place and we call it the "Mall") and buying Tygon in what ever size I needed. I keep it on hand for when ever I need it. I have never had any trouble with this Tygon unless it was several years old. After reading your post, I got a piece out and found the number . . .  It is Tygon F-4040 just like you said.

There's a couple other members of this site that live close to me that get their Tygon at the same place.

I notice that the hardware store down the street carries clear vinyl tubing in the usual sizes but I have never used it for I figured it would get stiff quickly?
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: 21945
  • Karma: 532
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: fuel lines
« Reply #7 on: March 01, 2013, 04:29:36 pm »
Jim that dolmar echo dealer we both know put some kind of very (cant come up with choice word) grey fuel line in a poulan I worked on. Wrong size and all but it was very bendable and slick actually ( slide off easy and fuel filter slipped out easily too) etc.  I told the owner of saw I left it in and made the ends fit tight so I could see what this grey line did with ethanol gas.

REDNECK Saw Repair Getter Done

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 21945
  • Karma: 532
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: fuel lines
« Reply #8 on: March 01, 2013, 04:32:28 pm »

I notice that the hardware store down the street carries clear vinyl tubing in the usual sizes but I have never used it for I figured it would get stiff quickly?

I tried that stuff when I 1st started repairing saws etc.  Lasted about 1 year or less and had to go through and redo all the saws I did with the clear vinyl crap. Got stiff as a board.
REDNECK Saw Repair Getter Done

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: fuel lines
« Reply #9 on: March 01, 2013, 04:53:42 pm »
You will find that the gray is Viton but what I've seen from McMaster Carr is a little darker in color.
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
4 Replies
412 Views
Last post March 30, 2012, 08:07:22 am
by Plipkaka
5 Replies
450 Views
Last post December 30, 2012, 12:30:18 pm
by tbone0106
0 Replies
122 Views
Last post March 07, 2013, 12:04:09 pm
by Magnus
2 Replies
389 Views
Last post August 26, 2013, 01:39:22 pm
by Bluegill
36 Replies
336 Views
Last post August 15, 2014, 07:58:20 am
by 660magnum
4 Replies
135 Views
Last post October 23, 2013, 08:53:08 pm
by huntindog
2 Replies
660 Views
Last post November 06, 2013, 07:57:16 pm
by 3000 FPS
2 Replies
199 Views
Last post November 17, 2013, 12:42:27 am
by fordfairlane78
4 Replies
538 Views
Last post July 19, 2014, 06:34:10 pm
by man of stihl
11 Replies
214 Views
Last post January 06, 2015, 01:06:57 pm
by Cut4fun .