Using Power Tune spray in my Mercury 115 outboard?

Question

I bought some Quicksilver Power Tune. The directions say that you should spray it directly into the carbs with the motor running. Here's the dumb part of the question. Where are my carbs? Seriously. I have pulled the cowling off and looked, but I am not seeing what I would expect. It's a 1990 Mercury 115 hp 2 stroke, 4 cyl motor. I think that they are on the port side of the motor, but I am unfamiliar with the engine. Do I need to remove something else to be able to see the carbs and spray the Power tune into them?

Answer 1

On the front of the Engine behind the black plastic cover>

Answer 2

A quick answer would be to remove the cowling, and look for the air cleaner.  They all have one or more.  The carbs will be right under them.  Only spray one at a time.  There should be two.  Put your ears on the water pickup, (on the lower unit) and pick the idle up a little if possible. Spray until the motor bogs some, but try not to let it kill.  Then do the next one.  The carbs should be located on the front of the motor.  Look for the air cleaner, and you got it.  Good to get the varnish out.

Answer 3

Check the plastic housing in front of motor. Some have removable plugs in front of each carb. If so you can spray through them. If not remove cover and spray into carbs.