Need lil help with my 70 hp-707HE

pita482

Petty Officer 3rd Class
Joined
Jun 28, 2010
Messages
92
Im a new boater , Just picked up a 15ft with a 70 HP Chrysler 707HE, Dirt Cheap, Its been sitting since 1994 , Cleaned the carbs, new fuel pump diaphragm, Runs good! Bought a Manuel set the timing to the book, 36 mark at -4 (32deg), but after reading some threads some people are saying -6 (30 deg) is this correct and one more question whats the best octane fuel to run in this older engine ?? Thanks for your help...
 
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