Push Mower Primer Bulb Replacement?

panzees36March 26, 2008

I have a Murray 3.5 HP push mower.I can't seem to get the primer bulb to pump gas into the carburetor.If I pour a little gas in the carburetor it will start but cut off once the gas is gone. When I push the primer bulb it goes in and takes a while to come back out. There is no gas being pumped. How do you replace a primer bulb?

Thank you for reporting this comment. Undo
rustyj14(W/PA)

Turn mower on its side, with the carburetor on the high side. Peer in the hole where the primer bulb sits. Clean away any dirt or crud. In the hole you will see a thin snap-ring, with many feet holding it in. With a screw-driver, carefully pry out on that ring, and the bulb will come out, maybe with the ring. If not pry the bulb out, too. They are not glued in.
Then straighten out the ring, place the new bulb in the hole, and carefully push the ring down into the hole, making it snug all around. Don't puncture the new bulb!
Before installing the bulb, i always use a piece of tubing to blow thru any holes under the bulb. And, if you have the correct size of socket, it can be used to seat the ring!
HTH: Rustyj

    Bookmark   March 27, 2008 at 11:55AM
Thank you for reporting this comment. Undo
tomplum

You may just need to clean the carb. Actually, if is one of the little plastic top o tank carbs, a whole new carb is under $20

    Bookmark   March 28, 2008 at 12:46AM
Thank you for reporting this comment. Undo
joe_m(MA)

Use a 3/4", 12 point deep socket to seat the ring. Tap lightly with a hammer.

    Bookmark   March 28, 2008 at 10:43AM
Thank you for reporting this comment. Undo
mowernoob

If you want to remove the bulb and keep your sanity, you will need Briggs tool 19461. Is the bulb cracked or damaged? The primer circuit is made up of a flapper valve in the carb gasket, the primer bulb, and a check ball behind the bulb. The problem could be in any of the three. Get the model, type, and code off the engine and take tomplum's advise and get a whole new carb.

    Bookmark   March 28, 2008 at 12:22PM
Sign Up to comment
More Discussions
Lawn-boy F Series - Connecting Rod play ?
I have my Lawn-boy apart to replace upper and lower...
bhap
Hayter Harrier Pro Roller Problems
Hi folks, I have just taken apart my hayter harrier...
timkodd
Shindaiwa T18 Trimmer TK Carb Rebuild
During the process of cleaning and replacing the diagphrams...
sjsmithjr
airens 1534 mini zoom no crank
I've got a 15hp Briggs motor that I attempted to jump...
baldo6878
MTD mower runing rough
My MTD mower is running rough. It is hard to start...
latunda
Sponsored Products
Patio Living Concepts Lamps Bahama Weave 34 in. Dark Mahogany Outdoor Table
Home Depot
Kichler Soria 10 1/4" High Bronze Outdoor Wall Light
Lamps Plus
Mini-Monty Pendant by LBL Lighting
$268.00 | Lumens
Expanse Floor Lamp in Black
$579.00 | LexMod
Warp Ceiling Lamp Aluminum
ModernistLighting.com
The Cinnamon Mobile Pantry - MET4SHLFB
$199.99 | Hayneedle
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™