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H carb adjustment


 
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TuckerMac
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Joined: 04 Jan 2012
Posts: 70


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PostPosted: Wed Jan 23, 2013 5:54 am    Post subject: H carb adjustment Reply to specific post Reply with quote

Will the main jet out of adjustment make the engine
hunt or must it be the governor. My H goes brrrr,
brrr, brrrr. All looks good in the governor, and it
is adjusted per the service manual.
 
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Wayne in MN
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Joined: 30 Jul 2007
Posts: 1404


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PostPosted: Wed Jan 23, 2013 5:57 am    Post subject: Re: H carb adjustment Reply to specific post Reply with quote

Run the engine wide open and turn the main adjusting screw in or out until it runs smoothly. Then turn out 1/2 turn extra.
 
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teddy52food
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Joined: 05 Mar 2006
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PostPosted: Wed Jan 23, 2013 7:11 am    Post subject: Re: H carb adjustment Reply to specific post Reply with quote

You should be able to open the main jet to where the exaust smokes black. If not the carb needs cleaning.
 
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MisterT
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Joined: 09 Feb 2010
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PostPosted: Wed Jan 23, 2013 7:18 am    Post subject: Re: H carb adjustment Reply to specific post Reply with quote

Tuckermac wrote:
(quoted from post at 14:54:05 01/23/13) Will the main jet out of adjustment make the engine
hunt or must it be the governor. My H goes brrrr,
brrr, brrrr. All looks good in the governor, and it
is adjusted per the service manual.


It is the governor. Lots of parts in there get worn out and will not be detected by just looking.
 
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old
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Joined: 12 Mar 2000
Posts: 56761
Location: Lake of the Ozarks area of MO

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PostPosted: Wed Jan 23, 2013 9:00 am    Post subject: Re: H carb adjustment Reply to specific post Reply with quote

Could be the govanor going bad or it could well be the carb out if adjustment. If the main jet is set to lean and or if clogged up yes it will surge up and down. I would start by pulling the main jet adjustment parts out the needle and the part the needle sits in. Turn on the gas and make sure you have a good flow of gas out of it. Also take a small wire etc and poke into the main jet to make sure it is in fact open. I use a torch tip cleaner tool for that. Then put the parts back on and start at say 4 turns out from bottom and adjust it from there
 
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