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1987 force 125 over chargeing problem

T

TINMAN778

New member
I have change the rectifier the battiers
check all the battery cables, checked all
around the motor for bad wiring and have not
been able to solve the over chargeing problem
next i was going to check the stator but i don't
know how
can anyone give me some help on were else to
look for this problem and how to test the stator
 
This was posted in another Force Forum.
Also try outboard ignition . com
cdi electronics . com
both have test procedures.


(I just recently purchased a 1985 Bayliner with a Force 85hp engine. From the start, I have been experiencing high charging voltage. I did some research on this subject and decided to do my own testing. All of my connections are clean and my batteries terminals were as well.

Several people on the web have stated that, since the alternator only delivers 9 amps, it cannot harm the battery. Others stated that the problem was that the battery terminals were corroded or the battery was shot. I wanted to find out the real story.

On Friday, I installed a brand new Exide Marine 730 amp battery. I had previously checked, water lever, specific gravity of the fluid, voltage and did a high rate test on it. This battery was new and in great condition. As stated before, all of my wiring is also in good condition.

Friday, the Chesapeake was pretty calm for this time of year so I ran around for 1.5 hours with no particular destination. During this time, my volt meter read 16.5 volts. At the end of this time, I opened the battery box and found water puddled around the battery. The sides of the battery were warm and the voltage read 13.9 volts.

I suspected that overcharging was occurring as I found water in the battery box before. At that time, the box cover was not on and I thought that it might have been water splashed in from that damn swim platform that floods the boat constantly. However, I took the swim platform off for this trip and no water came into the boat.

Since several people on the net had replaced the rectifier and experienced no change, I decided to put in a regulator instead. The regulator part number is Universal 090-5. It is made for an ATV but will work on the Force engines. I obtained this information from several posts where the posters had the same problem and the regulator corrected it. The reported voltage after installing the regulator is 14 volts. In years past, I have done the same thing with Suzuki and Honda motorcycles and it also served to bring the excessive voltage down.

The regulator costs $45 but I feel it is well worth it. Batteries are not cheap these days and I want mine to last as long as possible. Additionally, I don't want to be in the middle of the Chesapeake and hear click, click when I turn the key.

I hope this helps some of you with charging problems. For what it's worth, I am a professional aviation mechanic.

Regards,

John )​
 
Thank you for your reply, I was going to try and replace my batteries
but I will ask my marine about the regulartor
did you think I sould test the stator and if there is no
regulator on the motor now way would it need one
send reply back I have to fix this problem
 
Your stator is OK. Common reasons for high voltage when no regulator is installed is wrong battery installed (non-marine) and bad connections. Make sure all connections are clean and tight. Look for signs of corrosion at the base of each terminal lug. They can corrode inside where you can't see it. A voltage drop test on both battery cables would reveal any problem with the cables.
 
Hello thanks for your reply, the batteries are new last year
I did clean both batteries and the cable ends
no signs of corrosion or broken water level is ok
no signs of leaks or damage on the batteries
I don't know how to check for voltage drop
could you explain to me and I can figure it out
from there I am glad to here that it is not the stator
 
Jerryjerry05 said:
This was posted in another Force Forum.
Also try outboard ignition . com
cdi electronics . com
both have test procedures.


(I just recently purchased a 1985 Bayliner with a Force 85hp engine. From the start, I have been experiencing high charging voltage. I did some research on this subject and decided to do my own testing. All of my connections are clean and my batteries terminals were as well.

Several people on the web have stated that, since the alternator only delivers 9 amps, it cannot harm the battery. Others stated that the problem was that the battery terminals were corroded or the battery was shot. I wanted to find out the real story.

On Friday, I installed a brand new Exide Marine 730 amp battery. I had previously checked, water lever, specific gravity of the fluid, voltage and did a high rate test on it. This battery was new and in great condition. As stated before, all of my wiring is also in good condition.

Friday, the Chesapeake was pretty calm for this time of year so I ran around for 1.5 hours with no particular destination. During this time, my volt meter read 16.5 volts. At the end of this time, I opened the battery box and found water puddled around the battery. The sides of the battery were warm and the voltage read 13.9 volts.

I suspected that overcharging was occurring as I found water in the battery box before. At that time, the box cover was not on and I thought that it might have been water splashed in from that damn swim platform that floods the boat constantly. However, I took the swim platform off for this trip and no water came into the boat.

Since several people on the net had replaced the rectifier and experienced no change, I decided to put in a regulator instead. The regulator part number is Universal 090-5. It is made for an ATV but will work on the Force engines. I obtained this information from several posts where the posters had the same problem and the regulator corrected it. The reported voltage after installing the regulator is 14 volts. In years past, I have done the same thing with Suzuki and Honda motorcycles and it also served to bring the excessive voltage down.

The regulator costs $45 but I feel it is well worth it. Batteries are not cheap these days and I want mine to last as long as possible. Additionally, I don't want to be in the middle of the Chesapeake and hear click, click when I turn the key.

I hope this helps some of you with charging problems. For what it's worth, I am a professional aviation mechanic.

Regards,

John )​
Click to expand...

I purchased one of these regulators for my Johnson 88 SPL, can you tell me what wires go where? Thanx
 
Are your batteries the no maintenance sealed type?are the gel batteries?these batteries will read high on a rectifier only charging system..i have had the failure on good marine batteries also...there are two fixes..buy the recommended battery thats stated in your owners manual...or install a regulator...if you run with the high voltage you can damage some electronics on the boat...if you have no electronics installed you will eventually blow the rectifier..watch your tach..when it starts getting erratic the the rectifier is beginning to go..the good news is when the rectifier goes you can still run the boat...you are not charging the ignition battery and will have no tach though...there are many explanations on whats going on with the new batteries all over the web...including this site if you do a search..
 
papyson said:
Are your batteries the no maintenance sealed type?are the gel batteries?these batteries will read high on a rectifier only charging system..i have had the failure on good marine batteries also...there are two fixes..buy the recommended battery thats stated in your owners manual...or install a regulator...if you run with the high voltage you can damage some electronics on the boat...if you have no electronics installed you will eventually blow the rectifier..watch your tach..when it starts getting erratic the the rectifier is beginning to go..the good news is when the rectifier goes you can still run the boat...you are not charging the ignition battery and will have no tach though...there are many explanations on whats going on with the new batteries all over the web...including this site if you do a search..
Click to expand...

No, I have marine batteries, but I want to protect the electronics so I want to put a regulator in for just the electronics. I received an 090-5 in the mail today and just need to know which wires are which since no schematic was included. e.g. the case is ?, the yellow wire goes where and the black wire goes where? Thanx for any help!
 
No sorry I can't. Look on the net. iboats has a OMC Forum there is a guy there who can direct you to the wiring diagrams.Contact the company you bought it from,tey should be able to tell you. I'm selling the complete wiring system for a 95/88 spl e-bay.
 
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