McCulloch
How to Identify and Fix Common Gardening Problems ?
We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :
The (clear) fuel intake line runs from the top of the carburetor (straight nipple) and goes to the short post on the back of the primer bulb. The return line (blue) comes from the long post on the back of the primer bulb and goes into the bottom of the fuel tank.
Placement should be considered first. The filter should be installed in the outlet line that delivers fuel to the engine, after the tank outlet fitting but before any fuel pumps, regulators, primers or primer bulbs, or other filters.
Wear and Tear Depending on how often the little machine starts and its age, the inside of the bulb will eventually get gooey, causing it to stick. If a brittle bulb cracks around the seal, air will leak out the side rather than force fuel from the tank into the bulb, also causing a collapse.
Placement should be considered first. The filter should be installed in the outlet line that delivers fuel to the engine, after the tank outlet fitting but before any fuel pumps, regulators, primers or primer bulbs, or other filters.
The operation of the primer bulb is quite simple. When the filled bulb is squeezed, the pressure closes the inlet valve and opens the outlet valve which then sends the fuel supply to the engine.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
What else should i try
ANSWER : Make sure lines are connected correctly. On the back of primer it is stamped In & out
Why won’t the Prime bulb fill on blower and how to fix?
ANSWER : YOU HAVE THE PRIMER BULB HOOK UP WRONG TRY CHANGING THE FUEL LINES
Troybilt trimmer primer bulb collapses. it will start occasionally but will only run a few minutes.i have replaced the primer bulb and gas lines and still have the same problems.
ANSWER : It should have a small vent in the fule tank cap if its blocked the primer bulb will be sucked in as the fule pump can **** any fule from the tank
check the tank cap first,,,,,
Chain saw, there is a line from primer to the carb, then what? I cant tell if coming out of the carb it goes back to primer or in the fuel tank? Then should there be a line from fuel tank to the primer?
ANSWER : Similar to this, typical fuel system.
Fuel Line Replacement by SmallEng.com
The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
The pressure side of the primer returns displaced fuel to the tank as it is depressed.
Take lots of notes and a few digital photographs to help with reassembly. HTH
Lou
PUMPING THE PRIMER BULB DOES NOT WORK . HAVE RPLACED BULB AND FUEL LINES. NO SUCTION
ANSWER : The check valves in the plastic pump housing under the primer bulb are bad. Usually caused by cleaning with carb and choke cleaner. The part is available from any echo dealer. Most shops have a junk box full of them,, just ask
Need to replace primer bulb and fuel lines, is there a digram that shows the connections?
ANSWER : Http://www.ereplacementparts.com/images/fuel_line_diagram.jpg
I have a Craftsman Gold 6.0 mulching mower with a B&S engine on it that has been idle for about 10 years. It was only lightly used before that and I ran the gas tank dry before putting it away. Today I put gas in the tank pressed the primer bulb 3X and pulled the cord a few times without it starting. I noticed gas dribbling out of the little hole in the center of the primer bulb. It continuously drips and the gas is puddling on the top deck of the mower. Is this likely a problem with the primer bulb or something else? Thanks.
ANSWER : Sounds like the primer bulb dry rotted from sitting &/or the float is stuck in carb. If gas is indeed leaking from bulb. It will need to be replaced. While it is apart, clean carb inside & out with spray carb cleaner.
