NAPA carries several. This one is 1.5 to 3 pounds. Just wire in at your hour meter.

http://www.napaonline.com/Catalog/Ca...058_0417102348

I had the very same problem on my 1541 replaced mechanical fuel pump an it starts almost instant..

ok thanks a lot guys :beerchug: There is one thing I'm going to try first to prove or disprove a fuel/fuel pump theory I'm going to plumb in a primmer bulb just to see, I'll post results

Here are a couple other electric pumps that should work.

http://www.summitracing.com/parts/mrg-12s/overview/

http://www.summitracing.com/parts/pfs-10701/overview/

http://www.speedwaymotors.com/search...uery=910-11520

One nice thing about going electric is that you can also put a switch in the wiring to turn the pump off so that you are able to run the carb dry, then when you want to start it up again you just power up the pump, fill the carb and lighter up. The 2182's have electric pumps and it works sweet. I may put electric pumps on some of my other stuff this spring.

Looking at the pressure ratings I think Professional Products 10701 may be the best choice of the pumps I've listed here are some other vendors selling them
https://www.google.com/#q=Professional+Products+10701

If it is really cold, slow cranking produces less power produced by the flywheel for the coil on the electronic ignition of the M-18's
Reduce your plug gap to .023-.025, change to 5w30 and and start with a closed throttle.
You might try removing the plugs when it is cold and crank it over,you will see
little or no spark, affirming the no start condition.
Aftermarket replacements are more prone to this than genuine kohler ign. units in very cold temps.
a full battery or jumpers, and some kind of heat helps starting.

Again, If you decide to install an electric fuel pump DO NOT GO OVER 3.5 POUNDS OF PRESSURE as the needle/seat will not control the fuel and IT WILL FLOOD OVER!

I use a boat fuel tank with primer bulb on my Kohler stand by generator. It will bring fuel up to the fuel pump but does not seem to push through it very well. Are your plans to remove or go around the fuel pump and prime with the bulb? FYI the seat for the needle/seat in the carburetor has a smaller hole for fuel pumps over gravity feed ones so it may take a little work to fill a carburetor with a primer bulb.

Update
 

I did the primer bulb test and it took no time at all to start the 1872. I put the primer in front of the fuel pump as a means of testing the pump and like I said it started with no problem. As pointed out by Clint a mechanical fuel pump would probably fix the problem but also as pointed out an electric would also do the trick and has been proven as a good reliable upgrade. I'm thinking I'm going to go electrical the mechanical s seem to be a week link in the kohler engine as I already experienced in my 1811. All though I received great advise on pumps I'm going to go this route its in stock and close by. http://images.oreillyauto.com/parts/...g/42s_pack.jpg When I get the electric installed i'll do an update with pictures Once again thank you guys for great advise :beerchug:

Looking forward to your update! The fuel pump was replaced on my 1872 a year ago, but it's the mechanical one.

What is the psi rating on that pump?

Looks like it is 2 to 3.5 Sam.