These are the instructions from my manual for Removing the engine:
Step 1: Remove the bolts on each side of the engine mount that lock the engine mounting bars into position. Note that each has a bolt and a jam nut to hold the bar in position.
Step 2: Use a screwdriver and a mallet ora a length of rod to drive the engine mount bars down and out the holes. Take care not to damage the threaded holes in the top of the bars which are used to mount the Dozer/Snow Blade.
Step 3: Lift and remove the engine and engine mount assembly. Lift up the engine enouth to clear the lower pulley. When you lift up the engine, don't hold it by the carburetor or air cleaner. You can break the carburetor that way. Instead, pick up the engine by its steel base and the steel fuel tank mounting bracket.
With the engine cleared 1/2 inch above the lower pulley, move the assemply away from the transmission, lowering it away to clear the belts from the upper pulley. Note: Belts can be removed, if necessary, by working them off the upper pulley with your fingers. Tilt the engine toward the operator position as you work with the belts.
Sounds like you have already performed 1.
Hope this helps.