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Old 01-02-2011, 05:00 PM
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Default How to Remove Varnish Deposits from a Carb?

I have to rebuild the carburetor for my snow blower and it has a fair amount of what looks like varnish buildup in the bowl and on the float. What's the best way to clean it up? Regular old carb cleaner? Something else? Thanks.
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Old 01-02-2011, 05:19 PM
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Brake cleaner is good. Gasoline or Acetone is also good.
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Old 01-02-2011, 05:25 PM
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Originally Posted by Erik View Post
I have to rebuild the carburetor for my snow blower and it has a fair amount of what looks like varnish buildup in the bowl and on the float. What's the best way to clean it up? Regular old carb cleaner? Something else? Thanks.
Hmmmm tough question!
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Old 01-02-2011, 05:42 PM
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for varnish you want a dip type carb cleaner you can soak the parts in, not the spray stuff.

http://berrymanproducts.com/Products...sCleaners.aspx
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Old 01-02-2011, 06:25 PM
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Originally Posted by Mr pogo View Post
for varnish you want a dip type carb cleaner you can soak the parts in, not the spray stuff.

http://berrymanproducts.com/Products...sCleaners.aspx

Yep, this is the stuff my buddy uses for gummed up carbs when he buys a used motorcycle, typically the carbs are all 'effed up.
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Old 01-02-2011, 07:33 PM
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Gasoline works great since it's usaully handy. The other stuff I am sure works well, but I never have any around. Cut a plasic coffee can or a gallon jug in half and let the parts sit for about 30 minutes and then just get a stainless or brass brush and finally just use compressed air to get the parts dry.
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Old 01-02-2011, 08:40 PM
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Definitely buy a new needle and seat. If the carb is varnished, disassemble it before dipping it in cleaner. The needle and seat will have some wear and will make the carb flood the engine if reused. Make sure not to submerge anything that isn't metal. Including the float.

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Old 01-02-2011, 09:10 PM
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Thanks. I have a rebuild kit that includes new needle, seat, welch plugs and various gaskets and seals, so that should be good. I may try the gasoline first since I have that, and see what happens. Thanks for the tip on the Berrymans product too.

The float looks to be brass. Why not submerge it?
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Old 01-03-2011, 01:15 AM
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Soak it in Pine-Sol.
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Old 01-03-2011, 04:48 AM
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Ditto what Pogo said Erik, get a gallon of carb dip. [I couldn't locate my gallon can for the product brand - it's outdoors in the petroleum locker in a freezing shed. Hotlanta NOT right now].

It won't hurt the brass seat or other brass parts; put them in a very small tin can and submerge it too - overnight for all.

Squeaky clean when done and can be douched with water to neutralize. Then hit everything with compressed air; parts and passages.

With carb clean, strain the carb dip to remove any carb crap and return it to its can for future use. Lasts long time in sealed container.
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