|  | This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity. | |||||
| The Forum | Parts and Services | Unofficial Allis Store | Tractor Shows | Serial Numbers | History | |
| B carb rebuild | 
| Post Reply   | 
| Author | |
| 2011dandd   Silver Level     Joined: 25 Jul 2018 Location: Northants uk Points: 106 |  Post Options  Thanks(0)  Quote  Reply  Topic: B carb rebuild Posted: 07 Mar 2019 at 10:10am | 
| 
   Hi guys  Finally got around to rebuild the carb on the b. I was wondering if anyone could explain something for me please. I have the zenith carb on mine and instead of having a main jet adjustment mine simply has the plug. I have no idea why ? Cheers folks hope someone can make sense of this | |
|  | |
| Sponsored Links | |
|  | |
| Leon n/c AR.   Bronze Level     Joined: 19 Mar 2013 Location: Heber Springs A Points: 175 |  Post Options  Thanks(0)  Quote  Reply  Posted: 07 Mar 2019 at 10:22am | 
| 
   
On my Zenith B carbs the plug is where you can remove or swap main jets, could also be used to drain carburetor fuel bowl. Leon
    | |
|  | |
| Alberta Phil   Orange Level     Joined: 13 Sep 2009 Location: Alberta, Canada Points: 3937 |  Post Options  Thanks(0)  Quote  Reply  Posted: 07 Mar 2019 at 1:49pm | 
| 
   Many of the earlier 'B's had the non-adjustable power jet with the plug.  The later models seem to all have the adjustable one. | |
|  | |
| chaskaduo   Orange Level   Joined: 26 Nov 2016 Location: Twin Cities Points: 5200 |  Post Options  Thanks(0)  Quote  Reply  Posted: 07 Mar 2019 at 4:56pm | 
| 
   
What year is the B, and what is the carb # on round brass tag riveted to the top of the carb?
    | |
| 
     1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
     | |
|  | |
| 2011dandd   Silver Level     Joined: 25 Jul 2018 Location: Northants uk Points: 106 |  Post Options  Thanks(0)  Quote  Reply  Posted: 07 Mar 2019 at 5:01pm | 
| 
   1947 English built b supplied with American parts.  It’s a dual fuel, ie petrol /tvo. I need to inspect the identification plate better as some pleb has painted it in the past. | |
|  | |
| HoughMade   Orange Level     Joined: 22 Sep 2017 Location: Valparaiso, IN Points: 710 |  Post Options  Thanks(0)  Quote  Reply  Posted: 07 Mar 2019 at 5:09pm | 
| 
   Mine is a '51 and has the nonadjustable jet.  It's original.
    | |
| 
     1951 B
     | |
|  | |
| chaskaduo   Orange Level   Joined: 26 Nov 2016 Location: Twin Cities Points: 5200 |  Post Options  Thanks(0)  Quote  Reply  Posted: 07 Mar 2019 at 6:00pm | 
| OEM Stock 1947 4 125 B (Kerosene) Zenith 161J7 906 216937-2 is what I find for your carb. I believe it is type 161J7  model 906   part 216937-2. Edited by chaskaduo - 07 Mar 2019 at 6:01pm | |
| 
     1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
     | |
|  | |
| Steve in NJ   Orange Level Access     Joined: 12 Sep 2009 Location: Andover, NJ Points: 12024 |  Post Options  Thanks(0)  Quote  Reply  Posted: 08 Mar 2019 at 5:23am | 
| Some model Zeniths have a "fixed" jet with the plug. These were designed specifically for certain early model Tractor applications. Some, of those (depending on their P/N) can be upgraded to the later cousins that have the adjustable enrichment jet feature. I've upgraded a few customer Carbs, but I have to go by the P/N in my Zenith book. Steve@B&B | |
| 
     39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
     | |
|  | |
| 2011dandd   Silver Level     Joined: 25 Jul 2018 Location: Northants uk Points: 106 |  Post Options  Thanks(0)  Quote  Reply  Posted: 08 Mar 2019 at 5:55am | 
| 
   I will hopefully be able to get the part number from the carb later today! Thanks everyone | |
|  | |
| 2011dandd   Silver Level     Joined: 25 Jul 2018 Location: Northants uk Points: 106 |  Post Options  Thanks(0)  Quote  Reply  Posted: 08 Mar 2019 at 10:34am | 
| 
   Hi  An update on the id plate number The two numbers on there are 212844 and 9706 | |
|  | |
| chaskaduo   Orange Level   Joined: 26 Nov 2016 Location: Twin Cities Points: 5200 |  Post Options  Thanks(0)  Quote  Reply  Posted: 08 Mar 2019 at 11:21am | 
| 
   
My list has that as a 1941 B or C kerosene or low grade fuel.
    | |
| 
     1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
     | |
|  | |
| 2011dandd   Silver Level     Joined: 25 Jul 2018 Location: Northants uk Points: 106 |  Post Options  Thanks(0)  Quote  Reply  Posted: 08 Mar 2019 at 11:36am | 
| 
   A 1941 b ? Really I thought it was a 1947 I will have to check the tractor serial number now to see if that also tally’s up with a 1941 could have had a carb swap at some point though I guess. Thanks | |
|  | |
| Gerald J.   Orange Level   Joined: 12 Sep 2009 Location: Hamilton Co, IA Points: 5636 |  Post Options  Thanks(0)  Quote  Reply  Posted: 08 Mar 2019 at 3:47pm | 
| 
   Should be carburetor details in the shop manual: http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf Gerald J. | |
|  | |
| Post Reply   | |
| Tweet | 
| Forum Jump | Forum Permissions  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |