Re: Just inherited grandfathers 1956 Evinrude 35 hp - I know nothing about it... help
A harmonic balancer puller kit should have what you need. I tried the $7.00 version from Harbor Freight and it broke with very little pressure on it but some members have used it successfully. Others have been able to borrow/rent a puller from their local auto parts store. Worst case, you might have to buy one. I just saw one at Sears last week for $19.99. I made my own with 1/2inch steel plate. Just make sure the three pulling bolts are grade 8 and the proper threads so you don't strip the flywheel holes. Many have re-tapped their flywheels for larger bolts. Also, check the depth of the holes and mark the bolts accordingly so the bolts do not extend below the bottom of the flywheel and damage ignition system components. Some members recommend leaving the crankshaft nut in place after loosening it to prevent the flywheel from popping off. Penetrating fluid may help. Some members report using heat but it scares me. Good luck!
EDIT: I have used a section of chain in the starter ring gear to prevent rotation but you have to be very careful how it is secured so you don't damage something else.