S.L.O.W - function of Johnson 30hp

[nordy]

I have learnt S.L.O.W of my Johnson is activated at water temperatures of above 83 °C with the result revolution of the engine cannot exceed 2000 rpm within the overheating time.<br />I have had this in holiday, when I drove into a plastic bag, which had turned several times around the prop, limiting revolution so I only could drive very slowly but only for one minute's time.<br />But now I had a second much more annoying accident, when I drove into seaweed and the motor died and couldn't be restarted for 1 hour.<br />Is this a normal expectable S.L.O.W.-function?<br />Who knows ?<br /><br />Nordy

 

[marinegrh]

Re: S.L.O.W - function of Johnson 30hp

slow is designed to prevent you from destroying the engine by limiting the rpm to aprox 2500, it will keep going into slow unless the key switch is reset, once the temp threshold is met again it will keep goning into slow, the key switch has to turned off, then on again for the system to reset, however if the engine is still hot, like it apparently is, you are going into slow in a matter of seconds, you said you run over a bag, and then next day seaweed, your engine got hot, time to look at that waterpump, obviously the slow system is working if the engine is getting hot and reducing rpm's, the hour thing, well how hot was the motor, it has to cool down far enough for the slow system to deactivate along with the key switch being in the off position<br /><br />keep us infoed, <br /><br />good luck

 

[Xcusme]

Re: S.L.O.W - function of Johnson 30hp

Nordy,<br /><br />You have posted at least 13 separate times since August 14 regarding basically the same question about your Johnson 30HP. It makes it very difficult to track your progress with a problem when you keep jumping around. Please post any additional information to THIS post . I'm sure some of the very knowledgeable people on this board will help you. I'm not trying to beat you up or anything, I'm just trying to get you the help you need. Thanks