Stator Question

[Mattwnh]

I just bought another boat, Owner said motor was junk, (Ran Compression test and turns 130psi, Doesn't seem junk to me), Further evaluation... Checked for spark, None. Did Kill switch wire removal, Still no spark. Removed Flywheel. Magnet seperated from flywheel, Epoxyed and reinstalled magnet, Still No Spark.

Ok ...

Stator has 6 Wires coming from it.
2 Yellow
2 Brown/Yellow stripe
2 Brown/blue stripe

If memory serves correct, Yellow is charging. (I put a volt meter to those and just off cranking go 10.8v)

Now ... On the other wires I go to check for Ohms ... If I touch same color both brown/yellow I get 0 ohms. If I touch same color brown/blue I get 0 ohms. When I touch 1 brown/yellow to 1 Brown/blue I get roughly in the 750ohm Range and Vise versa on the other combination of the last 2 sets of wires.

Any one have the correct wire combinations I need to check for?

Thanks!

 

[Frank Acampora]

Re: Stator Question

One pair of brown/yellow and brown/blue charges one CD box. The other pair charges the other box. I forget which terminals on the board but if it is a black Force, there should be a diagram on top of the block. The two yellow are AC and attach to the AC terminals on the rectifier. 10.8 at cranking is good. The stator usually does not produce charging voltage (14-16) until about 1000 RPM.

 

[Mattwnh]

Re: Stator Question

forgot to mention.

89 motor
50hp

mod # 507F9B
ser # 1740

 

[Mattwnh]

Re: Stator Question

One pair of brown/yellow and brown/blue charges one CD box. The other pair charges the other box. I forget which terminals on the board but if it is a black Force, there should be a diagram on top of the block. The two yellow are AC and attach to the AC terminals on the rectifier. 10.8 at cranking is good. The stator usually does not produce charging voltage (14-16) until about 1000 RPM.

Call me stupid .. But CD box ... Is Blue Box Right? If so. There are 2 blue Coils, and 1 Blue box under the coils (no ther boxes except for the rectifier)

I guess I forgot to really ask my question (I think all wiring is correct as it seemed unmolested) But Rather test procedures for checking ohms. As I stated above, the only way I get any ohm reading is by crossing 2 different colored wires.



Thanks again ..

Also The trigger wires. I did an ohn test on the Red/white and White/Green ... (Left wires on the strip) Got a Reading of 45ohms (From what I read seems within tolerane)

So if Stator, Trigger seem to test fine and still no spark, what conclusions would you all come to? CD Box?

 

[Frank Acampora]

Re: Stator Question

Hmmm! When I read two pairs, I assumed it was a three or four cylinder engine. Your 50 only has one CD box (below the coils) and should only need one pair of brown/blue-brown/yellow But, let me go out and check my 50 tomorrow.

First, check the kill circuit. On the terminal strip mounted on the exhaust cover disconnect the blue and white wires. If she has spark, then you need to check the switch, kill switch (if it has one), and wiring. It is difficult to tell from that photo, but white should be connected to white and blue to blue. Blue is and should be jumped to ground on the terminal strip. In your photo, one white appears to be jumped to ground. This will ground the CD box and prevent spark. the other white is attached to the purple wire which is usually a tach signal. So, where does it go?

 

[Mattwnh]

Re: Stator Question

Hi Frank,

ok ... I figured everything out ..

No Spark issue was caused by bad cd unit, Replaced and got spark today.

Picked up a couple cd units from a guy on craigslist from his 125hp (allot of these cd units interchange between all HP's) (so I have an extra CD unit if anyone is looking for one)

This is one happy guy!

I am assuming the guy I got the boat from didn't know the magnet came loose, Thus not charging battery or possibly weak spark from magnet not rotating around stator field.

I think the guy (young than I) assumed that he could prob just use jumpercables, + the fact that there were tons of extra spark plugs in the boat (thinking that he fowled) when in essance magnet for stator was messing up, In the process by jumping the battery added to many amps to the circuit or checking for spark not properly grounding plug caused the a back feed to the CD to blow.

Again Frank, Thanks for taking for your help!