Where to look

[dav 2]

I took a B&S off the 2012 because parts are missing from the flywheel area. I couldn't mate the driveshaft up when I put the hydro off the 2110 into the Landlord. Wound up putting the 243431 from the afore mentioned 2110 on the Landlord so I won't lose more parts during the move south. The only numbers I can make out on the motor are 300xxx. Where should I be looking to find out what this motor is? Thanks

[gregc 3]

If it is the original engine in the 2012 it's numbers are 300421 0120-01. You can find the numbers here: http://www.simpletractors.com/parts/engine/landlord.htm