Stator Test 1996 4 storke 9.9

[Jemm]

I am testing a stator for a 1996 9.9 high thrust J10FRELEDR. There is no spark.

What are the voltages for the coils on this stator. My Clymer book says

Power Coil Cranking should be 100 volts
and
Charge Coil Cranking should be 300 volts.

The stator I have which is an exchange after the old one died peaks at 0.2 v DC / 36 v AC on the power coil and 11 v DC / 191.8 AC on the charge coil.

My book says that the above specs are right for a 1999 to 2001 model Johnson. Mine is a 1996

The original stator is model 0584821 which according to BRP is compatible with model 0763761 which is the model that was sent to replace my defective one and the model I am now testing.

Resistance on both the power coil and charge coil are within specs at 50.6 ohms and 722 ohms respectively. the battery charging coil resistence is high at 1.4 ohms where my book says it should be 0.45 to 0.54

Any help would be greatly appreciated

 

[bankerjohn]

Re: Stator Test 1996 4 storke 9.9

Oh my god ... someone else with a 1996 9.9 4-stroke Evinrude ... ooops, Johnson!

Not to hijack your thread, but have you pulled the flywheel on your motor? I've been trying to find someone who can tell me the correct size bolts to use.

5/16"-18 (SAE coarse)
5/16"-24 (SAE fine)
M8-1.25 (metric coarse)
M8-1.00 (metric fine)

I've tried all 4 size bolts at the local hardware store, but none of them want to screw in with just hand pressure ... and I'm afraid to try using a wrench until I'm positive what the correct size is.

 

[Jemm]

Re: Stator Test 1996 4 storke 9.9

Closest i have come is 1.25 Metric. They work for me but they don't really fit. I have a kit from the local auto store (Canadian Tire) made by powerbuilt. I figure if I strip the thread on the first few milimeters that is enough for me to pull the flywheel and leaves enough for the next person if they find the right size.

Do you have a shop manual for yours. I am using one by Clymer called "Evinrude/johnson Outboard Shop manual 5-70 HP four stroke 1995-2001"

It lists the stator specs for cranking voltage as 100 V for the Power coil and 300 V for the charge coil. The brand new stator I just got puts out 39 V and 100 V.

I called BRP to get the values and they refused to give them to me. I'm pretty upset and have nothing good to say about that company right now.

Regards, and good luck with your engine

 

[bankerjohn]

Re: Stator Test 1996 4 storke 9.9

I sent you a PM ... to the effect that I'll scan the pages in my factory manual and e-mail them to you ... if you'll send me your e-mail address in a PM!

 

[Jemm]

Re: Stator Test 1996 4 storke 9.9

PM sent. Thanks Bankerjohn. I really appreciate your help.

 

[tx1961whaler]

Re: Stator Test 1996 4 storke 9.9

How are you measuring the voltage? A regular DMM may not cut it for this measurement. A peak reading voltmeter, or DVA meter, are specialty meters for measuring average DC voltages and AC voltage spikes on ignition systems.

 

[Jemm]

Re: Stator Test 1996 4 storke 9.9

Thanks for the suggest TX

i am using a Fluke meter that has Max/Min/Average. If I understand correctly the Max setting gives me peak readings.

My manual does not specify AC or DC, so i tested both. My assumption is that this current all happens before a rectifier so that I should be looking at AC voltages.

Am I right?

 

[tx1961whaler]

Re: Stator Test 1996 4 storke 9.9

Yes AC is correct, but the AC is pretty high frequency, and DMM's alone don't catch the fast peaks. Here's the kit for a Fluke:
http://bpi.ebasicpower.com/pc/CDI518-88/CDITOOLS/Fluke+88+Meter+Kit+with+DVA+Adapter
The DVI adapter is the red two pronged thing in the foreground
They can be homemade, I'd Google it.

 

[Jemm]

Re: Stator Test 1996 4 storke 9.9

Thank you for the info. Yeah, I guess it is possible that my meter is missing some of the peaks. You raise a good point.

jemm

 

[Jemm]

Re: Stator Test 1996 4 storke 9.9

Thanks to the kindness of bankerjohn i now know that the voltages that I am reading from the stator are too low. TX suggests that perhaps my meter is not sensitive enough.

The stator I have is putting out about 1/3rd of the voltages that the manuals say i should be getting for both the power coil and charge coil.

So should I return this stator which was just sent to me to replace the prior defective stator?

Any ideas would be greatly appreciated.

 

[Jemm]

UPDATE Re: Stator Test 1996 4 storke 9.9

UPDATE Re: Stator Test 1996 4 storke 9.9

Update:

I called BRP and told them my dilemma. They told me that it is very unlikely that two stators are bad and that I should take it into a Johnson service center and if the stator is bad, then BRP will pay for the visit.

It took a while but i managed to get the engine down to a shop here in the keys,. The shop is getting exactly the same cranking voltages I am and after consulting with BRP they confirm that the stator is bad. Now I wait for a new one to arrive from California.

My guess is that my engine is unique in that it wants 100 and 300 volts and the model year before and after want 50 and 200 volts, that someone put the wrong number of windings on the stator.

Thanks so much for all the help.

For anyone whoe cares, this is a model J10FRELEDR 9.9 High thrust long shaft 1996

 

[bankerjohn]

Re: Stator Test 1996 4 storke 9.9

It's good to get confirmation that what you were seeing was indeed a real problem ... and that BRP is making good on the bad part!