The manual says to use a strap wrench, a 3 jaw puller and an oil seal remover to deal with the crankshaft portion of it before removal of the front cover. Cam locks are "special tools", but should also be available for "rent" at the local auto parts store if you don't have them.
Using the Strap Wrench, remove the crankshaft bolt and washer.
Discard the bolt.
Using the 3 Jaw Puller, remove the crankshaft pulley.
Using the Oil Seal Remover, remove and discard the crankshaft front seal.