merc 35 hp timing specs

[sunburnt]

hi -im hoping someone can help me verify timing specs on my merc 35 hp, 2cyl - 1985 - ss #a904265 .have norm run at 3 btdc at idle and havent checked max yet . did a tear down . always went by sound .have had it for 10 yrs . only have a clymers .cant afford a real manual right now! verified tdc already . trying to keep rpms down to save this old girl. any # s would be appreciated . thanks in advance.