1983 150 HP Timing

[Evinrude#1]

I have a 1983 150 hp Evinrude. I need to preform the high speed timing with the motor @ 4300-4600 rpm's. It states to refer to the decal for the timing value. My decal is missing. Would anybody know the time mark value @ 4300-4600 rpm's?

 

[Boobie]

Call a local dealer and have him check a service manual for the spec.