Topic: starter motor reconditioning

[_mark]

Hi guys. The power cable that goes to the starter motor is in very bad state. Anyone tried to change it ?
I don't know how to fix the end to the casing...



Thanks and Regards.

[69cb750]

Normal, nothing wrong.

[fantino]

My cable was very frayed and in tough shape overall, so I desoldered the connection when I rebuilt my starter and put in a stud bolt instead. I’m running new 6Ga flexible welding cable with a crimp ring terminal for the hookup.

[Alan F.]

That's cool Fantino, I'm glad to hear that's a possibility for these starters.
Thanks!

[_mark]

My cable was very frayed and in tough shape overall, so I desoldered the connection when I rebuilt my starter and put in a stud bolt instead. I’m running new 6Ga flexible welding cable with a crimp ring terminal for the hookup.

Thanks. Did you mantained the old isolating ring around the stud ? or you replaced it with something else? how did you managed to block the stud from internal side if the space is so inner? Thanks

[fantino]

I kept the phenolic insulator. After the solder and old wire is removed, the spacer can split into two pieces with a flange on the either side (if I recall correctly…). The internal field coil connection is an integral copper ring terminal that fits a 1/4” or 6mm bolt. I used a low head hex socket bolt and shaved a little off the head for adequate clearance, then a thin nut on the outside to clamp everything together. A button head may also work.

I had to replace the stud with a longer one than shown in that pic, it didn’t have quite enough thread engagement with the cable ring terminal installed.

[_mark]

Thanks. I did  it.

[grcamna2]

That's an excellent fix 

[Alan F.]

Looks good _Mark, anything to add to what Fantino said?

[_mark]

Looks good _Mark, anything to add to what Fantino said?

Well.. the cable removal and stud installation was done not by me but by an artisan..
I had many troubles to build the cable because no one is anymore building tailored cables.
There is to find a good quality 16 mm2 flexible black cable for batteries... (you can find in boat shops or car electrian workshops or online under "16mm2 battery cable"),  then there are two choices for the type of terminals : terminal lugs or open barrel terminals (this last type is like the old one).
I wasn't able to find if open barrel terminals still exists for 16mm2 cable and D6 hole.
I opted for terminal lugs .
It is important to find the correct lug M6/16mm2 and use the correct tool to crimp to wire, otherwise larger lugs or improperly squeezed lugs will bring troubles because the space to pass the cable is narrow.
to cover the terminal I used an additional 32411-230-000 honda gum cover that is already used on the breaker side of the cable.
The lug on the motor must be bent a little (30° circa). Lenght of the cable is around 650 mm.
It is also possible to buy such cable in yamiya shop:
https://www.yamiya750.com/index.php?main_page=product_info&cPath=246_21_250_59&products_id=3666

but I didn't because I'm in Europe and there is a lot to pay for custom, delivery and a lot to wait.

[grcamna2]

_mark,do you have enough clearance between the threaded stud which comes out of the starter/cable and your engine cases ?

[PeWe]

I think the stud will aim to the rectangular opening for wires, starter 12V and oil pressure sensor.

My CB750 K6 has a CB900 -81 starter with stud connection in same direction as CB750 stock.

I was lucky to find a 16mm2 battery ground wire 600mm long with crimped ears that I could just bolt on, exact lenght.
 I verified that stud and ear to motor did not get in contact with case.
Stock CB750 on top

CB900 with stud.

[_mark]

_mark,do you have enough clearance between the threaded stud which comes out of the starter/cable and your engine cases ?

yes, there is a rectangular opening for the wires as you can see in the picture. So no any risk for clashing in the case.

[Maltboy]

What was the reason for bending the stud?  Just curious.

[_mark]

What was the reason for bending the stud?  Just curious.

I didn t bent any stud. I bent a little the tail of the lug because of the position of the cavity and because the cable must do a U turn .