Small Engines (Lawn Mowers, etc.): Gas Trimmer-Carburetor, carburetor body, adjustment screws

Question
Behind my primer bulb there is a small rubber 'tit' that fits into my pump cover.  I have tried to locate the part on the Hayward site you recommended to someone else previously, but they do not show it on anything...
I can't keep my trimmer runing and my neighbor seems to think that the tit should not have a hole through the centre of it and it does.  It does not appear that the carburetor is continually being fed gas and I am wondering if this is the problem.  Any thoughts?

Answer
Hello Derek:

There are Primer Bulbs that have the Small Hole in the Center of them. If the Hole Lookes too be Manufactured (Smooth Edges Around the Hole) Into the Rubber, then Most Likely this Bulb has the Hole in the Center. If the Hole Does Not Look Manufactured (Stretched and Uneven Edges Around the Hole), then Replace the Primer Bulb. Usually When Someone has this Problem I Suggest you  Remove, Disassemble and Soak Overnight in Carburetor Cleaner (I Use Gunk). I have Found that Most People can Use a Breakdown/IPL and Disassemble the Carburetor Enough for Proper Cleaning. You Only have to Remove the Bowl, Float Pin, Float and Needle Valve and Any Adjustment Screws that Go Into the Carburetor Body. The Welch Plugs Do Not have to be Removed. Then Soak the Carburetor Body and Parts in a 1 Gallon Can of Gunk Carburetor Cleaner Overnight. The Can has a Parts Tray Inside it for the Small Parts. Once the Carburetor and Parts are in the Cleaner, you can Replace the Lid for Safety and to Prevent Accidential Spillage. Then Blow Out the Passages with Compressed Air. Install New Parts if Required. If the Carburetor is Giving Problems and it Has Not Been Cleaned in a Few Years, this is the Best Option. If the Engine is Stored Properly for the Off Season; the Carburetor will Usually Function Properly for 4 or 5 Years before Requiring to be Cleaned Again. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.

Good Luck

Respectfully

John