Originally Posted by paintman
The metal lever lying flat on top allows you to increase revs without engaging gear. Useful when starting and flushing. Only works in N.
Use for starting is debatable on a clamshell - see below
Originally Posted by Fstarocka
after 3 hours cranking and scratching my head a 1000 times.. called previous owner and he said to push key in - boom.. instantly started!!
Based on your other post I think you may have a "Clamshell" engine. (cowl comes off by opening like a book rather than lifting the lid off?) If not ignore the rest of this post!
If you do have a Clamshell, just be aware when cold starting that the "Choke" on those engines isn't a traditional "cut the air off" butterfly valve type choke - it's actually an enrichening valve - in other words it allows more fuel in through the idle nozzle rather than cutting off the air. (has the same overall effect on the starting air-fuel mix - more fuel = less air)
What that means is that if you try to crank it cold with the fast idle lever up it totally negates the fuel valve by opening the throttle & letting lots of air in, effectively de-choking it. What you may find is you have to crank / fire it on "choke" with your other hand on the fast idle lever to get the revs up as soon as it fires. Each one is slightly different, so have a play and you'll find what yours likes.
I find if I crank mine for 10s or so with the fast idle lever up open then put that lever back & crank it on choke it seems to "pre charge" the intake cavities nicely. (a bit like running open throttle with no spark so draws fuel in)
The "boom" fire you got is likely 'coz you had pumped plenty of fuel through already on your previous 300 cranks!
Just a heads up 'coz it is counter intuitive to how most outboards work - had me stumped for a while on my first outing!