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post #1 of 4 Old 03-15-2017, 12:23 PM Thread Starter
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521 carb

I'm having carb trouble. Usually I clean them up and they run, good or bad but this changes. Sometimes it goes lean and stalls while blowing, sometime it goes rich and chugs black smoke. Not sure why but as I get old, I'm running out of "give a @$%&" so I'll probably just replace it.


From what I find, the carb should be a 632107 or 632107A. Is there a better source or seller for aftermarkets?


As for putting on a HF engine, are they a bolt-in?

'77 Ariens 924032 "Brick House" Re-Powered with a TEC 10HP and oversize auger pulley
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post #2 of 4 Old 03-15-2017, 05:25 PM
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I'd suggest buying an OE carb. I've tried some of those aftermarkets and they're really hit and miss (big surprise). Some run fine, some run worse than the original carburetor it was replacing, some need cleaning and rebuilding right away, some have no adjustment in the needles. Your call. In a shop environment I cant be bothered anymore to play carb swap games so I just stick with OE.


You can use a 640084B carb in place of a lot of 5-6HP adjustable carbs. Non-adjustable just bolt on and go.
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post #3 of 4 Old 03-15-2017, 05:32 PM
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The 632107 is the adjustable version of the 640084b. Amazon $15, The ROP Shop is my favorite seller. You can't beat their customer service.

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
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post #4 of 4 Old 03-18-2017, 05:44 PM Thread Starter
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I'm leaning towards the adjustable version just because I like to have that available.

'77 Ariens 924032 "Brick House" Re-Powered with a TEC 10HP and oversize auger pulley
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