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2011dandd 
Silver Level
Joined: 25 Jul 2018
Location: Northants uk
Points: 106
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 Topic: B carb rebuild
Posted: 07 Mar 2019 at 10:10am |
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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
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Leon n/c AR.
Bronze Level
Joined: 19 Mar 2013
Location: Heber Springs A
Points: 169
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Posted: 07 Mar 2019 at 10:22am |
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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
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Alberta Phil
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Joined: 13 Sep 2009
Location: Alberta, Canada
Points: 3721
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Posted: 07 Mar 2019 at 1:49pm |
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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.
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chaskaduo
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Joined: 26 Nov 2016
Location: Twin Cities
Points: 5203
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Posted: 07 Mar 2019 at 4:56pm |
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What year is the B, and what is the carb # on round brass tag riveted to the top of the carb?
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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2011dandd
Silver Level
Joined: 25 Jul 2018
Location: Northants uk
Points: 106
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Posted: 07 Mar 2019 at 5:01pm |
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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.
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HoughMade
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Joined: 22 Sep 2017
Location: Valparaiso, IN
Points: 691
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Posted: 07 Mar 2019 at 5:09pm |
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Mine is a '51 and has the nonadjustable jet. It's original.
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1951 B
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chaskaduo
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Joined: 26 Nov 2016
Location: Twin Cities
Points: 5203
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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
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11744
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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
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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2011dandd
Silver Level
Joined: 25 Jul 2018
Location: Northants uk
Points: 106
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Posted: 08 Mar 2019 at 5:55am |
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I will hopefully be able to get the part number from the carb later today!
Thanks everyone
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2011dandd
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Joined: 25 Jul 2018
Location: Northants uk
Points: 106
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Posted: 08 Mar 2019 at 10:34am |
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Hi
An update on the id plate number
The two numbers on there are
212844 and 9706
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chaskaduo
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Location: Twin Cities
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Posted: 08 Mar 2019 at 11:21am |
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My list has that as a 1941 B or C kerosene or low grade fuel.
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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2011dandd
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Location: Northants uk
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Posted: 08 Mar 2019 at 11:36am |
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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
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Gerald J.
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Joined: 12 Sep 2009
Location: Hamilton Co, IA
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Posted: 08 Mar 2019 at 3:47pm |
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