Carb. adjuster tool

1449 Views 6 Replies 4 Participants Last post by roosamaster, Jul 15, 2013

roosamaster

Discussion Starter · Jul 5, 2013

Gentlemen,

I have a nearly new (I did purchase new) "cub cadet" string trimmer that I purchased at our local Tractor Supply. When it was brand new it would miss & stumble until fully warmed up (needed to keep choke partially on) then would accelerate normally. This year it will only accelerate to full speed with choke partially all the time. I have in fact cleaned internal carb screen (with no difference) and added fuel system cleaner to no avail. It would now seem that the high speed and possibly idle speed jets need to be adjusted, however I am unable to locate adjuster tools. The screws are "D" shaped, and I can find no one that can supply me with the proper tool (I'm not a repair facility or a Landscaper so the E.P.A. says I can't buy them) does any one know if these tools are available, or do I need to use something to cut slots in the carb. to use a conventional screwdriver?? Any advise would be helpful

Roosamaster

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Tractor-Holic

· #2 · Jul 5, 2013

You might be able to make a tool out of small diameter copper tubing or steel brake tubing...have to find a size thats close in diameter inside as the screw head is,and flatten one side of the tube till it'll grab the screw..

On one of my Sears Suburbans,the darn main jet screw is very hard to get too with the air filter housing on it,it obscures it,and I get shocked every time I go to adjust it by the coil's primary "kill" wire!..

..

I finally decided to try using a hunk of 3/8" I.D. rubber fuel line hose as a tool ,it will force over the knurled screw tightly enough to allow you to use it as an "extention" and adjust it while running much easier...its hard to use a screwdriver to do it,it has to be "perfect" length and will vibrate out of the slot constantly with it running,making adjusting it a real frustrating experience..

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dougand3

· #3 · Jul 5, 2013

I took a 3/16" socket and used bench grinder to remove outside metal until it fit in the holes to get to the L and H mix screws. The socket walls get so thin - they will shape to the "D".

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roosamaster

Discussion Starter · #4 · Jul 6, 2013

Tractorhaulic-Doug and three,
Thank you both for your replies. I think I'll try both suggestions & see if one will work (now I know why I bought that H/F "no name" socket set. I'll keep everybody updated on what finally works. Again, THANKS!

Roosamaster

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Brad

· #5 · Jul 6, 2013

I have a couple pieces of equipment that I cannot find a carb adjustment tool for. Mine were more hex shaped than D shaped, if I recall. I used a wire connector Butt Connector to adjust mine. It fit on tight enough to get a grip on the screw for a minor adjustment.

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roosamaster

Discussion Starter · #6 · Jul 8, 2013

Brad,
Thanks for that idea, that sounds like a minimum muss & fuss proceedure. I'll let you all know how it worked out. Thanks again.

Roosamaster

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roosamaster

Discussion Starter · #7 · Jul 15, 2013

Tried the "butt connector" suggestion, yes it was/is a tight fit into the adjuster. So tight in fact, while the adjustment needle would turn, it was impossible to determine just how muchbecause the connector is also tight in the carburator castinb After fighting with the adjustment for several hours (over the course of several days), I bit the bullet, and cut a slot in the two needles with a "Dremel"tool. Now I can adjust both needles and the idle speed with the same screwdriver. I was trying to avoid doing it this way, but the choices were limited. THANKS for all the suggestions given

Roosamaster

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