Please post pics at 2-3 angles. Maybe a better pic would be with the starter pulled off. I?m not seeing a 20 hp in my chrysler/Force Clymer 1966-1988. I am seeing some could be a pain and some should be fair to repair. From working lawn mowers, chainsaws and etc., the spring is usually ?The Monster? to deal with if you can not avoid it. I searched 20 hp rope starter at the address below and saw some info.