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971 carb settings


 
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Too Far Gone
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PostPosted: Sat Nov 17, 2012 9:59 am    Post subject: 971 carb settings Reply to specific post Reply with quote

I recently acquired a decent old 971,rebuilding everything,having carb issues still,has inline filter which Im gonna try and remove it,an see what happens(doing crazy stuff and runs low on gas if it does start)))I rebuilt carb and I WOULD APPRECIATE IF SOMEONE COULD GIVE ME SETTINGS.Thanks
 
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awhtx
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PostPosted: Sat Nov 17, 2012 11:12 am    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

Start with the 2 adjusting screws (1 on top is Idle, 1 on bottom is Load) each turned out 1.5 turns.
 
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PostPosted: Sat Nov 17, 2012 11:36 am    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

Doesn't the lit you have for rebuilding the carb have instructions???? Most kits will tell you in the instructions what the setting should be to start with. That said as per what the other guy said. As for an in line filter most of the time those cause way more problems then they ever fix
 
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Too Far Gone
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PostPosted: Sat Nov 17, 2012 4:52 pm    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

awhtx,Thanks for answering my question.I appreciate it very much.Ive been working on both sides of 1-1/2 to 2-1/2 turns each and playing with it,but just doesnt act right all the time,part of the time its got a lot of gas in carb and then none,got fuel all the way to carb it seems,but I'll throw away the filter as Ive already read from folks on earlier posts about the inline filter problem.THANKS GUYS
 
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souNdguy
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PostPosted: Mon Nov 19, 2012 8:47 am    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

most add on in line filters cause flow issues.
 
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Too Far Gone
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PostPosted: Mon Nov 19, 2012 1:36 pm    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

Ive got all kinds of gas running out at the carb
 
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souNdguy
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PostPosted: Tue Nov 20, 2012 5:30 am    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

can you be any less specific/

'at the carb'


at the fuel bowl to carb connection.

at bowl to head.. line to head.

at carb halves?

carb mouth?

out choke or throttle shaft?
 
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PostPosted: Tue Nov 20, 2012 3:37 pm    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

I could have been less specific,but you'd never have figured it out without being there,but it was exactly as stated,FUEL RIGHT UP YO THE CARB,PART TIME GAS SHOOTING OUT INTAKE PORTION OF CARB,AND PART TIME WAS BONE DRY.Got good flow all the way through NOW,got good points now,everything is great now,ended up being a combination of several things.Had GREMLINS at work!
 
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PostPosted: Tue Nov 20, 2012 8:06 pm    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

parts list only with basic instructions.It now runs great,but seems to be still running low on supply after a bit.Tossed the filter too.Think I'll just have to take carb and other attached parts off and boil again.Thanks
 
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PostPosted: Wed Nov 21, 2012 8:23 am    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

Befre you open the carb back up try this. Remove the carb drain plug and check for a good steady flow if gas for a few minutes. Catch the gas to look for dirt/rust etc. If you do not have a good steady flow for say 3-5 minutes work your way back to the tank to find where it is clogged
 
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PostPosted: Wed Nov 21, 2012 3:18 pm    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

Ive got a good steady flow to carb,just got a speck inside it somewhere
 
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PostPosted: Wed Nov 21, 2012 4:40 pm    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

Float set wrong or the needle sticking in the seat. If it is a rubber tipped needle seat then it should also have a spring clip that hooks to the float so it can not stick. Cheap kits will have the rubber tipped needle seat but not the spring
 
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PostPosted: Wed Nov 21, 2012 4:48 pm    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

I know,I am pretty sure I forgot to put the clip on there
 
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PostPosted: Wed Nov 21, 2012 4:56 pm    Post subject: Re: 971 carb settings Reply to specific post Reply with quote

No clip means sticking needle seat and that gives you problems like you have now
 
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