I need a new primer bulb. The mice ate it.
The Tecumseh engine is on a Toro push mower from Home Depot.
I went to the repair shop with the model number. He said he needed the spec number. So he sold me 3 different bulbs. When I got home I called to give him the spec number and then he looked it up. Turns out he did not have any info on my engine. So I am stuck with 3 bulbs.
My Tecumseh engine model #LV195XA...Spec #362089E.
I have...
1) 1 dome shaped red bulb with no air hole in it.
2) 1 red bulb that has a "shoulder" and an air hole in it.
3) 1 black bulb with a "shoulder" and no air hole in it.

I think I need the one with a "shoulder" but I do not know if it needs to have an air hole or not. Can you help me?

 

You need part number 640351

AJ

 

He sold me B171263, B171263 and 632047A. He said I could return what I do not use. They all look the right size. Can you tell me if 640351 has the air hole in it?

 

It is steped non vented but it needs a seal under it that comes with the primer. see picture



AJ

 

The only one I have that is stepped and has no hole is black. I measured the retainer ring. Exactly this same size. I measured the base of the rubber. The new one is about 25/1000 smaller which I attribute to the old one being seated and squashed down by the retainer. It does not leak on the carb. When I push the primer I hear no squishy sound. I had to unsticky the float valve and put gas in the cylinder to start it. It has been sitting for 2 years so it was a little gummy. Anyway, it started. I will let it get cold again and try the primer and see if it makes a difference.
How do you tell it the primer is priming?
I did not know about the white plastic part and the spring under the primer. They fell out and miraculously I saw them land. I put them back in. They should be ok.

 

I went out and started the mower. I then pushed the primer bulb. The mower sputtered. Is that an indication that the bulb is working?