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Old 02-12-2012, 09:31 PM
StihlMechanic's Avatar
StihlMechanic StihlMechanic is offline
LawnSite Bronze Member
Join Date: Aug 2010
Location: Zone 7/8 in Tejas
Posts: 1,135
Originally Posted by piston slapper View Post
I use fingernail polish to seal the welch plugs. Seems to work fine.
Stihlmechanic should know the proper sealant.
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Fingernail polish for external plugs only. Nothing seals permanently to the internal welch plugs so IF and when I need to replace a plug I dont, I just replace the carb. Years ago, before ethanol, fingernail polish worked. With ethanol, nothing seals permanently and with carbs priced at 30 bucks msrp, it only makes sense just to replace it. The only repair I will do to an old carb is replace a stiff metering diaphragm or leaking inlet needle. Cant put alot of time in an old carb when labor rates are 75+ an hour.
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