1994 Rude 9.9 - dead rectifier?

[Jim311]

Up until now I didn't really care about having charging capabilities on this motor, but I am running longer and longer using my trolling motor and other accessories, and I'm about to leave on a multi-day fishing trip where I won't have easy access to charging. Anyway, I've not done much diagnosis here, but since my boat runs fine otherwise I'm wondering if I just don't have a shot rectifier. Is this a pretty fair assumption? I checked voltage on the battery while running and it does not change whether the motor is running or not. I haven't checked the leads from the rectifier however, and I haven't tried to read any of the leads from the stator either. 1994 Evinrude E10RELEO if memory serves me.

 

[boobie]

Re: 1994 Rude 9.9 - dead rectifier?

According to your model #, it's a "95. Go to CDI Electronics.com. They have good troubleshootng procedures.

 

[Jim311]

Re: 1994 Rude 9.9 - dead rectifier?

According to your model #, it's a "95. Go to CDI Electronics.com. They have good troubleshootng procedures.

You are right, it is a 95, sorry! I will check out CDI then and see what they say.

 

[the machinist]

Re: 1994 Rude 9.9 - dead rectifier?

These motors do not have a real high amp output anyway as compared to the newer ones. My 93 9.9 & a 70 "go to motor" with all day trolling, (& using a depthfinder) would maintain the battery for about a week before it started to get low enough that the DF would die when I hit the starter on the 70hp (lots of draw then).

From this I would suspect that if this was your only means of propulsion, you could use it for at least that long before it drained down.

 

[hidef]

Re: 1994 Rude 9.9 - dead rectifier?

Disconnect the rectifier if it passes the following bench test with an Ohm Meter it is good

Red Lead ------ Black Lead --------- Reading

Red wire ------- Yellow wire --------- High
Yellow wire ----- Red wire ----------- Low
Yellow wire ----- Case Ground ------ High
Case ground -- Yellow wire --------- Low

If you check your stator (two yellow wires one has a grey strip) with an Ohm meter it should read fairly low. It is nothing but a long wire to an ohm meter. If it reads high or open it is bad.

 

[Jim311]

Re: 1994 Rude 9.9 - dead rectifier?

Thanks hidef. So I can test the rectifier with it off the motor? I will have to figure out how to use that setting on my multi-meter. The old rectifier looks super old and I don't know it's history so it would not at all surprise me to find that it is defective.

 

[hidef]

Re: 1994 Rude 9.9 - dead rectifier?

Yes you can or you just disconnect the wires and test with your multi-meter on the ohms setting.