Cam Orientation

[Bigrider]

Per Water Warrior 2, I primed and tried the start, and no real indication that I'm getting any kind of ignition. I checked and have spark. Two more things to check are changing the gas to new (its been sitting awhile) and getting a new spark plug. Worse case, how do I check to see if I put the cam in 180% off? As stated earlier, the cam marks are in the right orientation at TDC, but they look that way on intake too. There is a white mark and it is facing the intake side. Is that where it is supposed to be?
/r
Dave H
San Antonio, TX