So pulley is bolted to the timing gear using four bolts, which in turn is bolted to the crank end using the big bolt in middle? Yep. I’d say yank the whole assembly then fork with it on the bench.
The timing gear is likely keyed to the crank and can only be installed one way, so risk of borking your timing is nil.
Middle bolt is removed by a socket connected to a long bar which is (almost) braced against something immovable. Then hit the starter with the spark plugs removed. *clink* chugga-chugga-chugga. Poor man’s impact wrench.
