On May 3, 3:04*pm, "SteveB" wrote:
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

Check out this iboats thread:

http://forums.iboats.com/showthread.php?t=170490

Steve, has the boat sat for quite a while. If so then the fresh gas is
good but the innards of the carb are probably corroded a bit. One
thing a person can do is to get some "Seafoam" and use it via the
directions.

http://carfood.com/noname34.html

it's used a lot on motorcycles, and snowmobiles etc. it's pretty good
stuff and it might cure the problem without having to take the carbs
off an have them soaked and rebuilt.