On Thu, 26 May 2005 20:09:40 -0400, "Chris"
wrote:

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?

Just a little throttle will do just fine - up to a 1/4 or so. You
don't need much more than that in any conditions with a properly tuned
and maintained engine.

Likewise, how much throttle is typically given when you start your motor?

None. Then again, my engines are 30 plus years newer than yours. :)

1/4, 1/2 or full?

When I had this type of engine, usually a 1/4 throttle or less - you
don't want a quick rev up on a cold engine.

Do you rev your engine to help it warm up?

No. It will warm by itself given adequate choke and a little
throttle. As the engine warms, decrease the choke and you'll be all
set.

Later,

Tom