1990 Mariner 100hp low idel

[tannedman]

My mariner has a really low idel even when warm it will cut out when ideled down anyone have a diagram as to where the idel screw is and how many turns out it should be set at and idle RPM Thanks

 

[outlawfox13]

Re: 1990 Mariner 100hp low idel

Idle should be set to 750 rpms in gear on the water. In turn the idle in neutral will be around 1000. Hope this helps

 

[tannedman]

Re: 1990 Mariner 100hp low idel

well if i can find the idle on the motor it would help its the 2x2 mariner i have looked for it and tried looking for a diagram of the motor but can't find out where the idle screw is on this thing lol

 

[dish]

Re: 1990 Mariner 100hp low idel

just a guess but follow linkage from timer base down.Idle screw will be there.Look for the screw that advances the timing.

 

[reynold460]

Re: 1990 Mariner 100hp low idel

well if i can find the idle on the motor it would help its the 2x2 mariner i have looked for it and tried looking for a diagram of the motor but can't find out where the idle screw is on this thing lol

hi i have a 1989 115 hp merecury 2+2 , you will find the idle screws on the top two carbs (the bottom 2 dosent have any) they are the screws that have springs on them turn them in till lightly seated then back out a turn and a half my motor is set this way and idles like a charm

 

[dish]

Re: 1990 Mariner 100hp low idel

Wouldnt that be air mixture screws on carbs?