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Discussion Forum

B Carburetor

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Tom in Tacoma

04-09-2002 18:06:54

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I have a rebuilt Zenith like the tractor's original except that it has a needle valve in the lower front where most carbs have a plug. It this a shutoff or an ajustment? My shop and parts manuals show a plug.

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Dick L

04-10-2002 11:38:48

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 Re: B Carburetor in reply to Tom in Tacoma, 04-09-2002 18:06:54  
Thats a power jet adjustment.

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Tom in Tacoma

04-10-2002 18:39:18

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 Re: Re: B Carburetor in reply to Dick L , 04-10-2002 11:38:48  
So what position should it be in or can I plug it?
Thanks for the help

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Dick L

04-11-2002 07:30:35

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 Re: Re: Re: B Carburetor in reply to Tom in Tacoma, 04-10-2002 18:39:18  
The only way you could plug it would be to install the proper power jet in place of the one in there now. If you are afraid of it I would gladly swap with you one off a working tractor.
To adjust the one you have you would start by turning it to the botton and them opening it up about 1 1/2 to 2 turns. After the idle screw is set to proper idle Rpm's you would them adjust that screw to where the tractor has the most power. Some get them mixed up and start messing with the power jet before the idle in set and get stressed out when they cant get it to run correctly. Not really hard to do. If you want to swap email me. I wont charge for the swap but you would have to pay for the postage.

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