Hi there,

I assume most motors have them (cold start throttle), but I'm going to be
specific about an early 70's Merc.

Should it always be mandatory that the throttle be used when starting? Or
is this just for a cold day when it hasn't run in 24 hrs? Likewise, how
much throttle is typically given when you start your motor? 1/4, 1/2 or
full? Do you rev your engine to help it warm up?

I'm new to these motors with controls as I'm traditionally a tiller
boater...

Thanks