Jd H carb

Patsdeere · Apr 20, 2018

So working with a museum and they have a H today had been given lipstick to at some point. They are having problems starting, so asked for my help. Since they don't even have oil in the air filter, that's pretty obvious they need it...

They have already torn the mag apart to replace parts..... It'll be interesting to see what they have decided since we know testing is the best way before parts changing.

I was looking at the carb and it has it's fair share of issues as well. It drips fuel with the fuel bowl turned off. Obviously, fuel bowl leaks and needle leaks. I went to check the idle/load screw settings and noticed that the little balls that are supposed to hold the settings are gone. What is the best way to fix this? Obviously it needs to be fixed as whatever setting you set won't stay from engine vibrations.

Thanks.

Mike(NEOhio) · Apr 20, 2018

Roberts has those balls and springs.

Patsdeere · Apr 20, 2018

Ok, but how do you keep them in?

PopinJohn · Apr 20, 2018

I surmise that Marvel Schebler had a special tool that could simultaneously
compress the ball and spring and stake the opening to retain the ball.
My only way has been to put the spring and ball in place, then start the
load or idle mix needle into the threads while holding the ball compressed
with a tiny screwdriver and finish threading the needle into place.
I have bought the springs from Deere in the past, but not lately.
McDonalds in Georgia carries them in stock.
The ball is a .156 diameter hardened steel ball available from places like MSC.
I always tell my customers not to remove the idle or load needle without good
reason because the ball can fall out again.
To my knowledge, the ball problem is not discussed in Deere or M/S literature.
MikeS.

Mike(NEOhio) · Apr 20, 2018

There is a tiny spring behind them and they're staked in. Look for what looks like a line across the hole, like from a chisel. You may want to send the carb to someone like RandyB who rebuilds them all the time.

Mike(NEOhio) · Apr 20, 2018

I rebuilt my H and A carbs last year and the balls stayed in place. They weren't stuck so I left them alone.

PopinJohn · Apr 20, 2018

I?ve seen my share of Deere carbs over the years with this problem.
Especially on carbs that someone put in a fire or stove to heat the brass plugs for
removal. Almost always ruins the tension in the detent spring and then the
detent ball don?t detent anymore.

Patsdeere · Apr 21, 2018

I didn't purposely take them out. They jumped.

Jd H carb

Patsdeere

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Mike(NEOhio)

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Patsdeere

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PopinJohn

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Mike(NEOhio)

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Mike(NEOhio)

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PopinJohn

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Patsdeere

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