1994 30hp Johnson Outboard Idle Problem?

Question

First of all thanks for the help on the gas & Oil quest. Now My motor starts good, but when i pull back on the throttle to idle at a lower rpm it shuts off... What rpm should it be at idle? How and where can i adjust that so it will not stall out? Thanks for your help...

Answer 1

There is a slow-speed needle valve adjustment s***w on the carburetor, starboard side high on the venturi.  Before you start, s***w the needle valve in until it seats gently, then turn it out one and a half turns.  

Start the engine and use the hi-idle lever to adjust the RPMs where it will just stay running.  Then start turning the needle valve in 1/8 turn at a time, pausing to let the engine respond.  As you turn the valve in, RPM's will increase.  Each time, lower the hi-idle lever to just keep the engine running.

Eventually you'll hit a point where the engine will start to die or spit back - at that point, back the s***w out 1/4 turn.  You'll find the smoothest running somewhere in that last 1/4 turn.  Once it's set, you won't need to change it until the carb requires rebuilding.

If you can get it to idle around 1100 on the muffs, it should drop to around 900 when you put it in the water, and 750 or so at idle in gear, which is about right.  You'll have to make final adjustments to the idle speed when you get it in the water.

Answer 2

it should adle from 750 to 1000 rpms  look at the cables when your throolte is moved and see what you have to do to give it more gas  its hard to say without seeing the engine myself

Answer 3

On the carburator there is an idle ajust s***w. keep loostening it until it idles nicely.