I have a 1973 mercury 850 which i recently replaced the trigger/distributor assembly in and also replaced the switchbox. The problem that i am haveing is that the flywheel has been removed and i am not sure if it is on correctly or not and i am having difficulty setting the timing belt correctly. I was wondering if there is anyway to set it correctly without the marks on the flywheel or if there is a way to be sure if the flywheel is mounted correctly. Any help would be greatly appreciated.<br />Thank-you<br />Egriff