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| I have a 2003 snapper walk behind with a 6.75 OKV intek Briggs engine.
When I left it in the garage one day it started leaking gas from around the carb and out of the red primer bulb area. I took the primer bulb out with its retaining ring, but the bulb itself looked ok. Couse it has a preformed hole in the end and that made me think that it operates by pushing air against the carb. I guess that there is maybe a diaphram in the side of the carb that may have failed? CAn I get just this from a snapper dealer- have had no luck finding it on the web despite numerous searches. |
Follow-Up Postings:
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| you are correct in your assessment, the primer bulb is simply an air pump. When priming, the primer bulb sends a shot of air to the float bowl. some fuel is displaced - this travels up the venturi tube and some fuel enters the air stream in the venturi area. Most probably the needle and seat has worn over the years or perhaps some dirt has entered this area. To solve, your carburetor needs to be removed for cleaning and replacement of the needle and seat plus other replaceable parts. Test the carburetor by inverting - attempt to blow through the fuel inlet to see if there is leakage. You should also remove the fuel tank. Dump the fuel and flush out any dirt. (I usually spray the tank interior with carburetor spray and draw this out with my vacuum equipment.) Dry the tank with an air hose. Clean the plastic air filter housing. When reassembling, use a new fuel hose and new gaskets for the carburetor and air filter housing. Check the oil quantity and inspect the oil to make sure fuel did not leak through the engine - entering the crankcase. Get rid of the old fuel by pouring in your vehicle. If it looks bad, ask some of the local repair shops if they have a collection point. |
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| 1. are the fuel tank caps on these vented or non vented? 2. and, if you take the air filter off and look down into the carb, is it normal for there to be a shallow (1/8 inch) puddle of fuel in the carb "hole" / side nearest the primer bulb? - when engine is off of course? Thanks |
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