help with a suzuki dt150 please

[cds111]

I got a 1988 Suzuki dt150 that I put on a pontoon and I'm having a few electrical problems. first I cant seem to get the tach to work, does anybody know which wire coming from motor is the tach wire? also I don't think its charging properly, does anybody know how and what to check to see if its charging right? any info appreciated. thx, chris

[Solarman]

Chris, do you have a service manual?
The manual shows the wiring for your motor. It also has the relative tests and numbers you need for testing your charging system.

The problem of charging may be related to the regulator/rectifier, or possibly the magneto.

The magneto produces AC current, the rectifier/regulator converts to DC current. The most common cause of problems with charging systems is dirty connections increasing resistance for correct current to pass freely, this in-turn will sometimes overheat the wires, and possibly damage the rectifier/regulator.

Good luck.

[cds111]

Chris, do you have a service manual?
The manual shows the wiring for your motor. It also has the relative tests and numbers you need for testing your charging system.

The problem of charging may be related to the regulator/rectifier, or possibly the magneto.

The magneto produces AC current, the rectifier/regulator converts to DC current. The most common cause of problems with charging systems is dirty connections increasing resistance for correct current to pass freely, this in-turn will sometimes overheat the wires, and possibly damage the rectifier/regulator.

Good luck.

I downloaded a manual and found out which wire is the tach wire and hooked it up to 2 different tachs but neither work. manual doesn't explain exactly how to check the stator or the regulator/rectifier. I searched youtube on how to check them and most stators have 5 wires, three yellow and 2 for current and ground. mine only has 2 wires going to the r/r. nobody has a good way of testing the r/r.

[Solarman]

Chris, do you have an alternator & starter repair shop in your area? If yes, take your flush attachment and boat over and ask if they can check the charging system, or call and ask?

The output of the stator is AC voltage, but the output of the regulator/rectifier is DC voltage. In some older motors the regulator is separate. Newer motors also have multiple phase stators, this complicates trying to explain. In multiple phase stators they link additional charging coils together to increase the outputs & wires. Simpler systems have fewer wires, and use its mounting for the ground connection. Also, newer stators may have added wires to induce a charge as alternators do. So unless you have the proper manual for your motor, you might have to look up "understanding older Outboard marine charging systems" or something similar.

My suzuki manual does have different checks for my stator and rectifier. Some are ohm tests, and some are output checks.

Good luck.

[cds111]

okay, got a new regulator/rectifier and that fixed the charging issue but still no tach. any ideas?

[artdf175]

Of course my df is different than your dt
Have you looked online for the wiring on your tach?
The schematic on my model has a green \ yellow / blue wires feeding the tach
Just need to get them on the right terminals and the tach wiring diagram may tell you where they go

[Solarman]

A good place to start is on the back of the tach. If wiring is clean/good connections, remove the rubber plug, there should be a small switch for number of poles in that hole, notice what it's set on, then switch back and forth through the three positions and put it back where you found it replace the rubber plug. If this does any good the contacts in the switch may have been dirty.

Try this and let us know when able, good luck.