"SteveB" wrote in message
...
Took my Lund/Merc 40 4 cyl 2 cycle fishing the last two days. It cuts out
quite a bit, and I'm suspecting jetting. The gas is fresh. Plugs are
new.

I need to buy a manual, but don't want to part with the $$$. I've done a
lot of carb adjustments on cars, motorcycles, atv's, etc.

This motor has two carbs. Are the low speed jets just brass screws that
you adjust at a high idle? Something was mentioned about high speed jets,
and do those need to be adjusted when the boat is going fast? Or is it a
thing of 1 1/2 turn from closed, or something like that?

The engine compartment is crowded on that motor, but I know I could pull
the cowling, and figure it out with a flashlight and some time.

Help would be appreciated, especially links to diagrams so I could pick
out the high and low, and other tips.

That is, when you're not busy talking politics. Politics is just too
boring and depressing, so I have decided that I want to go boating and
fishing instead, and at least if the end comes, I'll be standing in my
boat for the initial nuclear flash.

thanks.

Steve
Our local library system has manuals for various outboards, outboard
families, cars, and motorcycles. Have you tried looking there. The local
system's catalog is on line making a quick check easy. Yours may be as well.