1996 25hp mercury 2 stroke sea pro revving high

[Johnmerc98]

I have a 1996 mercury 25hp sea pro it starts right up and idles rough but if you give it the tiniest bit of throttle It revs high any ideas on what this could be from?? Or how I can fix it?? Pictures below

 

[flyingscott]

Is this a tiller with the shifter on it?

 

[Johnmerc98]

Is this a tiller with the shifter on it?

Tiller is just throttle up and down shift knob on side of motor

 

[flyingscott]

Are you revving it in neutral? Or out of the water in gear?

 

[Johnmerc98]

Are you revving it in neutral? Or out of the water in gear?

Neutral on muffs is all so far I shut it down

 

[flyingscott]

Is the knob on the front of the motor turned all the way to the right? Is this motor new to you? And stop revving it in neutral on muffs.

 

[Johnmerc98]

Is the knob on the front of the motor turned all the way to the right? Is this motor new to you? And stop revving it in neutral on muffs.

No knobs on front of motor just pull out lever for choke this one doesn't have the turn to prime and kill switch and yes it is new to me

 

[Johnmerc98]

No knobs on front of motor just pull out lever for choke this one doesn't have the turn to prime and kill switch and yes it is new to m

Is the knob on the front of the motor turned all the way to the right? Is this motor new to you? And stop revving it in neutral on muffs.

 

[Johnmerc98]

Also if there is carbon build up or unburnt fuel what should I do ? Burn it out?

 

[flyingscott]

Put up a pic of the front of the motor. Why do you have 2 posts on this motor?

 

[Johnmerc98]

Didn't know I made two posts I'm new to the forums sorry...pictures below also with my carb/choke diagram

 

[Johnmerc98]

Put up a pic of the front of the motor. Why do you have 2 posts on this motor?

Just has different hood original broke

 

[flyingscott]

Pic #2 has your idle screw in it. Try turning that down have you done a compression test?

 

[Johnmerc98]

It's backed out to where the shift linkage isnt touching it and I was getting 130psi cylinder 1&2 I checked reeds I checked vacuum lines for leaks the only thing I can think of is air/fuel mixture screw adjustment is wrong

 

[flyingscott]

Redo your link and sync with the manual