Suzuki DT voltage regulator

[John hulme]

Hi guys , my Suzuki DT 100 , 1996 era is occasionally charging at over 16volts , does anyone know if this voltage rectifier is a regulated rectifier or just a rectifier?
I have a spare so I can swap it but if the other is the same then I’d rather fit something that keeps it below 15 volts .

Cheers , John

[Pikey Dave]

Originally Posted by John hulme

Hi guys , my Suzuki DT 100 , 1996 era is occasionally charging at over 16volts , does anyone know if this voltage rectifier is a regulated rectifier or just a rectifier?
I have a spare so I can swap it but if the other is the same then I’d rather fit something that keeps it below 15 volts .

Cheers , John

Is it 16V across the battery or open cct? Does the voltage reduce as the battery charges or is it a constant 16V?

[Nasher]

I've just been through the genuine Suzuki workshop manual I have for DT150/200/225 including the EFI models.

Annoyingly, it at no point mentions the Reg/Rec output, it just mentions output from the individual charging coils pre the Reg/Rec.

16V does seem a little high to me if it's across the battery terminals. As you've suggested 14.5V-15V would sound more sensible.

Have you tested it with a multi-meter?
Or are you quoting a Voltmeter in your Dash?

Nasher.

[John hulme]

Originally Posted by Nasher

I've just been through the genuine Suzuki workshop manual I have for DT150/200/225 including the EFI models.

Annoyingly, it at no point mentions the Reg/Rec output, it just mentions output from the individual charging coils pre the Reg/Rec.

16V does seem a little high to me if it's across the battery terminals. As you've suggested 14.5V-15V would sound more sensible.

Have you tested it with a multi-meter?
Or are you quoting a Voltmeter in your Dash?

Nasher.

Its showing 16v on the digital display when running at the higher rev range , I’ll have to put a meter on it and take it out again , I’ve had battery acid in the battery box and not sure if it’s come out due to wave jumping or if it’s because it’s over charging . I guess the quickest test is just swop the rectifiers over and see if the other one keeps the voltage output lower .
Thanks for your help guys

[Nasher]

John

In case you haven't found it yet, using the search function in this Forum has been a help to me in the past:

https://www.suzukioutboardforum.com/...rd-parts-forum

Nasher.

[John hulme]

Originally Posted by Nasher

John



In case you haven't found it yet, using the search function in this Forum has been a help to me in the past:



https://www.suzukioutboardforum.com/...rd-parts-forum



Nasher.

Cheers for the link [emoji106]

[jncunliffe]

If it’s any help, mine produces between 13.5 and 14.5v across the battery at 5,000rpm.

Gadge

[John hulme]

Originally Posted by jncunliffe

If it’s any help, mine produces between 13.5 and 14.5v across the battery at 5,000rpm.

Gadge

Sounds like mine is on its way out then , cheers for the info .

[Nos4r2]

Originally Posted by John hulme

Sounds like mine is on its way out then , cheers for the info .

I'd check your battery terminals, voltage will spike if one's making intermittent bad contact.
Rec/reg units are simple, much the same as on 80s 2stroke bikes. They usually either work or fail. Intermittent is highly unusual.

[jncunliffe]

Did you ever get to the bottom of this John? First time out this season today and mine's kicking out 16.5-17v...!

[John hulme]

Originally Posted by jncunliffe

Did you ever get to the bottom of this John? First time out this season today and mine's kicking out 16.5-17v...!

Hi , yes I did , I changed the regulator and now have 13v at idle and 14.4 when under way .
I got a second had Suzuki Reg from Sam on 07779504039 he breaks two stroke outboards and was very helpful.
Good luck [emoji108]