1994 Merc 60HP 2 stroke Rev limiter

[arimatation]

Does this have a rev limiter? Would be nice to know. Thanks

 

[CharlieB]

Re: 1994 Merc 60HP 2 stroke Rev limiter

No, the prop size determines WOT RPM.

 

[arimatation]

Re: 1994 Merc 60HP 2 stroke Rev limiter

It does show a rev limiter on the CD service manual I have.


I do also realize the prop can let the engine rev too high with too little pitch.
But that was not really the question...........But thanks for the response.

 

[CharlieB]

Re: 1994 Merc 60HP 2 stroke Rev limiter

It it always possible for me to be wrong.

Merc has built some ignition switchboxes with an RPM limiter circuit inside, but I don't remember any of those being used on engines less than V-6

Merc has also used an external idle stabilizer module (smaller black box that wires into the switchbox) These stabilizers advanced/retarded ignition timing to stabilize idle RPM. Often would become problematic at WOT and most recommend removal.

If you have a small black box that wires into the ignition module and NOT the temp sender or oil system, then you can safely remove it, eliminating another potential source of ignition problems.

 

[arimatation]

Re: 1994 Merc 60HP 2 stroke Rev limiter

I have not seen the timing module mentioned......but thanks for the heads up. I will keep it in mind. Pat