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This 8N is going to send me to the loony bin

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Outlaw (Magnoli

10-12-2004 14:59:05




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As some of you remember I was havin problems with gettin fire to the plugs on my 8N, well after lettin it sit in my shop for a while...I went back to it today and fixed that problem...turns out that there was a small piece of copper missing from inside the distributor that I took out and forgot to put back in when I changed the points an" such. Had a mechanic look at it and he swapped the polarity on the battery, where pos. is on neg. post and vice versa...Doesn"t seem right to me, but it still turns over and nothin is smoked or fried.
Now that part is finished, I go and put everything back together and low and behold, it still won"t start.
I"m gettin fuel to the carb, and fire to the plugs. When I bought the tractor from hell the woman said that a friend had put a new kit in the carb.
What I have done is i have turned both set screws on the front of the car all the way down until they were tight.
My question....what is the proper carb adjustment with the set screws tightened???
and is there anything that I might be missing?

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john NNY

10-13-2004 06:04:33




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 Re: This 8N is going to send me to the loony bin in reply to Outlaw (Magnolia, TX), 10-12-2004 14:59:05  
If you tightned your idle and main jets tight, you may have dammaged the seat or the pin itself. They are made of brass and can easily be dammaged. Pull the idle and main screws out and look at the end. You should see that it comes to a fine point with no ridges or marks. The way it work is you have a small hole, the jet. The pin on the end idle and main screws goes into the hole but does not touch it. The amount of gas going through the hole can be fine tuned by adjusting the pin in and out of the hole. If the hole is dammaged or the pin has a ridge from being over tightened, the carberator will be nearly impossible to tune. In which case you would have to replace them with a new carberator kit.
John NNY

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Dell (WA)

10-12-2004 17:00:21




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 Re: This 8N is going to send me to the loony bin in reply to Outlaw (Magnolia, TX), 10-12-2004 14:59:05  
Outlaw..... ...gack.... young mechanics that NEVER heard of POSITIVE GROUND electrical system. Oughtter whang'em along side the head and gitter'tennsion.

While yer starter don't care positive or negative ground, yer generator and voltage regulator shure as shute care. And your frontmount squarecan ignition coil can loose upto -40% of its sparkies with incorrect battery polarity. MAKER-RITE, positive ground like God and Henry intended.

Then re-polarize your generator/voltage regulator by "arc-sparking" your squarecan voltage regulator's BATT & ARM terminals underneath yer oilpressure gauge. I use a screwdriver blade 'cuz its eazy. The BATT & ARM terminals have THICK yellow wires attached. The other 2-wires are skinny black wires and you leav'em alone. Simple, eh? You can "re-polarize" anytime you think you have electrical charge issues. Just doo-itt ENGINE-OFF.

You write..... .."What I have done is i have turned both set screws on the front of the carb all the way down until they were tight. My question....what is the proper carb adjustment with the set screws tightened???"..... ..gack!!!

Much to the dismay of the govermental environmentalist doo-gooders, ALL carburators need adjustment. And you just DIDITT WRONG, proving the doo-gooders rite.

Ford sez: adjust BOTH the downpointing mainjet and the sidepointing idlemixture to 1-turn, as a STARTING POINT. I adjust the downpointing mainjet to 1-1/2 turns and LEAVEITT!!!

I then adjust the sidepointing idle mixture for maximum rpms, NOT smoothest, MAXIMUM idle rpms. The N-Idle specifcation is a SLOOOooow 400 rpms and is set by the behind the carb throttle setscrew. Iff'n it sounds too slow your probably close. You may haffta adjust the idlemixture several times to gitt the highest idle speed. My idlemixture is usually about 3/8 turn. Remember: the idlemixture adjust is BASSAKWARDS, out for lean IN for ENRICH. ..... ...Dell

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Dave H (NY)

10-12-2004 15:15:07




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 Re: This 8N is going to send me to the loony bin in reply to Outlaw (Magnolia, TX), 10-12-2004 14:59:05  
Back both of the screws out about 1 1/2 turns each



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