Carb grease?

5 replies to this topic
  • sabin

Posted October 13, 2002 - 11:29 PM


Does anyone know what type of grease is used in our carbs?

  • MN_Kevin

Posted October 14, 2002 - 05:03 AM


IN our carbs?

Forgive me Sabin, but what is "in" our carb?

  • sabin

Posted October 14, 2002 - 08:47 AM


Sorry Kevin for not being more specific.

I noticed that the FCR carburetor's slide(valve) rollers has some white grease on them. You can also see it on the part that rises the slide.

I was thinking that if I disassemble and completely clean the carb I'll probably wash out that grease with the carb cleaner and I may not have the same smooth operation of the carb afterthat...

So, the question is what type of grease is this that is resistant to gasoline?

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  • Dodger

Posted October 14, 2002 - 09:23 AM


Hmmmmmmm, I've cleaned my carb many times, never greased her up. Sort of a good question, but I would really think that you wouldn't want ANYTHING else in your carb except gas. I've never noticed any kind of performance/slide loss due to cleaning.

Dodger :D :)

  • techman

Posted October 18, 2002 - 02:14 PM


Hi Sabin,
The grease is probably not resistant to gasoline as it's there as a lubricant and grease is a means to hold oil, which is definitely gas soluable. The trick is that gas doesn't get up above the slide in any quantity except in a really screwed up circumstance that ought to rarely/never occur. There is some chance that it just came out of the bearing shields and ended up wherever the bearings touch. For corrosion protection reasons don't spray/dip/wash the bearings if possible. You'd hate to have anything bind at all in any form inside your carb!! Wash everything else (carb parts) as per normal. The slide I believe operates as hard on hard with no lube to attract grit.

If it's too late, try to get a couple new bearings to install. If you read the markings on the shields they are the part #'s you can relay to your local bearing shop. Shielded and sealed bearings always come pre-lubed, but use shielded again (not sealed) to reduce rolling friction. Make sure the slide and passage are spotless during reassembly or any grit could cause scoring and binding.

  • sabin

Posted October 19, 2002 - 06:40 AM


10x techman,

it's not too late. I'm cleaning it tonight...


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