CHARGING system/self-education/HELP!

i have a 2000 50 hp 2stroke 2 cylinder electric start motor. tryin to keep this brief and to the point.

-motor runs great. once it starts

  • i know its not extremely accurate, but i monitor the approx voltage using my GPS coming from the motor (when on) and the batt (when off).

-no more than 2 weeks ago, at cruisin-wot, i would run btween 13.8 and 14.4 volts.

-now, it runs no more than 12.1v at any given throttle.

-the Tach went out when this problem began. (you would think regulator-rectifier…negative)

-after replacing the reg-rect, nothing got better. the tach doesnt work, and i am still in a deep state of depression from lack of freedom to fish.

-question: should i be checkin the AC voltage comin off the charging system before its converted to DC? Where should i begin?

ANY SUGGESTIONS ARE APPRECIATED>>>>>>>

ft worry.

Sounds like the stator went out. DC voltage is what you should be checking. Should be at least 13 volts running.

If you run the motor with the battery switched off it will burn up the stator.

Ed Black

Triton 2486 WA Yam OX250

■■■■. that sucks. stators at least another 200.

ft worry.

I have had some light experience with outboard motors. In the past I had some firing issues with a 40 Merc. When I began to diagnose I discovered that any shotgun replacement would be in the $200 to $300 range per part. I purchased a service manual for the exact motor and was able to diagnose it to the exact part. When we talk about electrical on outboards there are several items to question. The service manual will walk you through the test of each testable component using a multimeter. It will give you wire colors and resistance readings for the wires. I would suggest this route if you want to do if yourself. If you are not comfortable with doing this yourself then pay some one to diagnose the problem for you and you take care of the replacement. If you shotgun the problem it may cost you several hundred. Good luck.

Sounds like a bad charging system. Could be several things. A quick, cheap check would be to install an ammeter ($30?) inline from the alternator to the battery. If it reads positive, it’s charging. If not, it’s not charging. You should also have roughly 13.4ish volts running read from the + terminal of the battery.

“I’ve invested most of my money on women, drinkin’, and fishin…I blew all the rest”

im pretty inclined with the mutlimeter in-hand. and i bought the book this past sunday. i just like to get other opinions. and i like to research the literature and educate myself before i even think about touching anything. nothin worse than f-in @#@# up just because you were impatient and didnt know what that “thing” you messed up was…thanks for the suggestions.

ft worry.

stator is the only other thing in the charging system

I’m now at www.teamcharlestonmarine.com

chris v, maybe ill bring the boat to work and drop it by your shop so yall can take a look. i just want it fixed.

ft worry.

maybe this is a sign…the 2 yellow wires comin from the stator show no reading at all when motor is runnin…possible sign of complete stator failure?

ft worry.

yep

I’m now at www.teamcharlestonmarine.com