Antique Engines and Old Iron

[Home] - [HELP] - [Forums] - [Library] - [Photo Gallery] - [Groups] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Antique Engine Community > Small Air Cooled Gasoline Engines > Chain Saw Collectors
Forgot Password? Join Us!

Notices

Chain Saw Collectors Vintage chainsaws and other air cooled gas engine saws, collecting and restoring.

Chain Saw Collectors

Humbling, HDC and HDA Walbro


this thread has 14 replies and has been viewed 1793 times

Reply
 
Thread Tools Display Modes
  #1  
Old 03-19-2017, 09:32:21 PM
Charley K Charley K is offline
Subscriber
 
Join Date: Oct 2016
Location: Jesup, Georgia
Posts: 199
Thanks: 156
Thanked 147 Times in 68 Posts
Default Humbling, HDC and HDA Walbro

Well, I have spent a lifetime learning and fixing things with a fair amount of success. Homelite xl chainsaws are my latest adventure. I have fixed many small engines just not many 2 STROKE engines. Rebuilt boat motors and swapped out new 2 cycle carbs bought off ebay because you could buy them cheaper than rebuild them. That came to an end with xl homelites, if you can find a new carburetor it costs more than a saw is worth. I got a buddy that owns a mower and saw shop, he has a barrel full of 2 cycle carbs that could not make the show. He has been in business for at least forty years and told me there are(some) that just won't run. I got four more for the barrel. I've always heard there are mechanics and there are parts changers, I've always thought of myself as a mechanic, could I have been wrong all these years? My hats off to all you 2 Cycle wizards. CK
Reply With Quote
Sponsored Links
  #2  
Old 03-19-2017, 11:27:43 PM
gdstew gdstew is offline
Registered-II
 
Join Date: Jan 2015
Location: New Philadelphia, Ohio, USA
Posts: 842
Thanks: 223
Thanked 424 Times in 300 Posts
Default Re: Humbling, HDC and HDA Walbro

With todays nasty gas, there are some carbs you just can't get clean even with an ultrasonic cleaner.
Reply With Quote
  #3  
Old 03-21-2017, 10:19:25 PM
Sonny Reese Sonny Reese is offline
Registered-II
 
Join Date: Feb 2010
Location: Downs, Illinois
Posts: 342
Thanks: 358
Thanked 184 Times in 95 Posts
Default Re: Humbling, HDC and HDA Walbro

I have been running super xl and automatics for 50 years, and started doing my own work on them.---I now have many different brands of 2 stroke saws and weed eaters to work on and trust me, some of them can be super picky as to how they are set.----The so called gasoline the govt. has forced upon us does NOT go well with 2 stroke motors, and I have not found a decent replacement blend that dont contain alki.!!!! thanks; sonny
Reply With Quote
  #4  
Old 03-22-2017, 08:43:03 AM
DustyBar DustyBar is offline
Subscriber
 
Join Date: Jan 2011
Location: near Kansas City, Missouri
Posts: 1,802
Thanks: 1,396
Thanked 1,433 Times in 613 Posts
Default Re: Humbling, HDC and HDA Walbro

Aviation gas may be an option. At this time I don't think there is any approved alcohol containing av gas sold. Its not cheap but it stores longer than auto gas ever did. I don't know that the octane ratings on both fuels are done the same way, motor vs research average. Av 110LL works fine in small engines of any kind.
Reply With Quote
  #5  
Old 03-22-2017, 10:05:56 AM
Bill Sherlock Bill Sherlock is offline
Subscriber
 
Join Date: Nov 2004
Location: Maymont, Saskatchewan, Canada
Posts: 2,830
Thanks: 733
Thanked 1,577 Times in 723 Posts
Default Re: Humbling, HDC and HDA Walbro

"With todays nasty gas, there are some carbs you just can't get clean even with an ultrasonic cleaner."

I've had good luck spraying or soaking ethanol damaged carbs in CLR, then rinsing with water and blow dry with compressed air. Follow that up with a good carb cleaner like Carb Medic. If at first you don't succeed use the CLR again. Only soak long enough until the white or green corrosion is gone.

Most carb cleaners won't touch the corrosion left by ethanol contaminated gas as it's not a petroleum product.

I now use only premium non ethanol gas mixed with Briggs & Stratton's Fresh Start additive for all my small engines and haven't had a carburetor problem ever since. I don't drain the gas tanks or top them up for over winter either.

Bill
Reply With Quote
  #6  
Old 03-22-2017, 10:58:27 PM
Sonny Reese Sonny Reese is offline
Registered-II
 
Join Date: Feb 2010
Location: Downs, Illinois
Posts: 342
Thanks: 358
Thanked 184 Times in 95 Posts
Default Re: Humbling, HDC and HDA Walbro

Sounds good , guys!!!! thanks; sonny
Reply With Quote
  #7  
Old 03-24-2017, 05:46:24 PM
Charley K Charley K is offline
Subscriber
 
Join Date: Oct 2016
Location: Jesup, Georgia
Posts: 199
Thanks: 156
Thanked 147 Times in 68 Posts
Default Re: Humbling, HDC and HDA Walbro

I feel like the carbs were clean after the ultrasonic cleaner and the carb spray. I don't know a lot about pop off pressure (" super picky as to how they are set" ). I've fumbled around with different needle leaver heights with little results. Usually they seem to flood at too high settings. Not knowing a lot about 2 cycle cause and effect is another problem. An example, my saw shop buddy told me to spray carb cleaner behind the flywheel when running, he said the engine will smother down with a leaking crank seal. I'm sure there are many ways to diagnose problems. If you suspect something, my problem is I don't know what to suspect. I really think the check valves I can't get are the answer to the carburetor problems, but that is only a guess. There does not seem to be much in the way of explanations when it comes to 2 cycle carbs on the net. Thanks for reading, CK
Reply With Quote
  #8  
Old 03-24-2017, 06:18:47 PM
gdstew gdstew is offline
Registered-II
 
Join Date: Jan 2015
Location: New Philadelphia, Ohio, USA
Posts: 842
Thanks: 223
Thanked 424 Times in 300 Posts
Default Re: Humbling, HDC and HDA Walbro

Walbro made a tool for setting the needle lever height. Also use the correct spring under that lever or you are just asking for problems.
Reply With Quote
  #9  
Old 03-24-2017, 07:58:05 PM
Charley K Charley K is offline
Subscriber
 
Join Date: Oct 2016
Location: Jesup, Georgia
Posts: 199
Thanks: 156
Thanked 147 Times in 68 Posts
Default Re: Humbling, HDC and HDA Walbro

HI, I have the tool, but don't know how you could determine the spring unless you use pop off pressure. At this point I feel like the tool. CK
Reply With Quote
  #10  
Old 03-25-2017, 07:39:50 AM
sprkplug sprkplug is offline
Banned
 
Join Date: Sep 2008
Location: Freedom, Indiana
Posts: 2,470
Thanks: 356
Thanked 934 Times in 657 Posts
Default Re: Humbling, HDC and HDA Walbro

Some saws run Ok on av gas, but the stuff does burn a little slower than auto fuel, and the lack of adjustable ignition timing means a high rpm saw might do better on auto fuel. Some do, some dont.
Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Walbro WT299A Geochurchi Carburetors, Mixers, Fuel Pumps and fuel delivery 1 12-23-2015 05:15:33 PM
Walbro 126 lmg stripped Kenny78 Small Air Cooled Gasoline Engines 0 03-22-2015 10:47:59 PM
Walbro LME 49 Carb Mike Unwin Small Air Cooled Gasoline Engines 9 01-01-2014 04:56:11 PM
Walbro WT420 Tim0477 Small Air Cooled Gasoline Engines 1 06-01-2010 02:05:11 PM
Need Help on a BFA Walbro Carb LeeZ Onan Generators 8 12-30-2009 09:23:37 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 06:11:42 AM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2016 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277