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I know on most new motors the start rpm is temperature controlled.
Once the engine reaches operating temperature the rpm's drop.
That's the reason the shop manual procedure for setting idle rpm
reads "after engine has reached normal operating temperature..."
So if the engine is very cold it will take longer for it to warm up.
And the rpm's remain higher for a longer amount of time.
Here's a link to an online parts diagram page:
http://parts.yamaha-motor.com/?ls=outboard
Once the engine reaches operating temperature the rpm's drop.
That's the reason the shop manual procedure for setting idle rpm
reads "after engine has reached normal operating temperature..."
So if the engine is very cold it will take longer for it to warm up.
And the rpm's remain higher for a longer amount of time.
Here's a link to an online parts diagram page:
http://parts.yamaha-motor.com/?ls=outboard