Bayliner Jazz Boggs under load

[mdawg48331]

My 96 bayliner jazz boggs down when you go above idle. I took it to a shop and had it checked out, and they said it was the stator. Heres the fun part...

After hearing what they would charge, I took the boat back and said I would do it myself. Pulling the flywheel was no issue, but when I was about to pull the wires off the stator, I realized both yellow ends were badly melted/burnt. Any Ideas? Any way to check these stators without a DVA? Any help would be great!

 

[mdawg48331]

Re: Bayliner Jazz Boggs under load

As a note, it is a 120xr, has the red stator and has spark on all 4 cylinders currently

 

[Dave1027]

Re: Bayliner Jazz Boggs under load

Better throw a rectifier on it while your at it. It may have shorted taking your stator with it.

 

[mdawg48331]

Re: Bayliner Jazz Boggs under load

Thanks for the advice. After a quick check, looks as though the rectifier is bad (open when red to +voltmeter and yellow to -voltmeter for both yellows. So you believe the rectifier was the first to go causing the stator to fail as well? Besides the shops diagnosis, I have not checked the stator yet to deem it as bad (the shop is starting to not sound as dependable after the burn wires, bad rectifier...)

 

[mdawg48331]

Re: Bayliner Jazz Boggs under load

So just found a quick check and wanted to make sure the stator it's referencing is the one I am speaking of as well (located below flywheel)... Any dissagreements? If not, my stator fails the yellow to ground test (15 Megaohms is fail correct?)

Stator Ohms Test
(Alternator Coils Only)
NOTE: Stator can be tested without removing from
engine.
1. Disconnect both yellow (stator leads) from bullet
connectors to voltage regulator.
2. Use an ohmmeter and perform the following test.
IMPORTANT: If stator is mounted on engine, black
stator lead (if provided) must be grounded to powerhead
when testing.
3. Replace stator if readings are outside ranges
shown.
15 AMPERE STATOR
Between
Yellow stator leads
.15 ? .20 (R x 1)
Between either Yellow stator lead and engine ground**
No Continuity R x 1000
*DC Resistance of these windings generally is less than 1.5 Ohms.
If a reading resembling a short is obtained, this would be acceptable.

 

[Dave1027]

Re: Bayliner Jazz Boggs under load

One thing you should know. The yellow wires do not power the ignition. Those are for the 12 volt charging circuit. As a test you may want to disconnect the yellow wires, tape them up individually and test.

 

[CharlieB]

Re: Bayliner Jazz Boggs under load

As Dave posted, tape off the yellow stator wires and retest the motor to see it the condition improves, if so, replace the rectifier.

If not, because there is NO RETURN on electrical parts you will want to be certain that the stator is at fault before spending a bunch of money on a new one.

Get a DVA meter or a DVA Adaptor for your volt/ohm meter and test the stator following the very detailed instructions found in the Outboard Ignition Troubleshooting Guide, available for free download from CDIElectronics.com

 

[mdawg48331]

Re: Bayliner Jazz Boggs under load

Well being the hard-headed guy I am, I just bought a new stator and voltage regulator as I thought it needed. As my luck goes, still bogging down as before, so if anyones interested in a cheap stator/ regulator feel free to let me know as I seem to have a spare set. Any ideas? As a check, I had the boat running and checked the battery voltage, It was only at 12.6ish volts. Shouldn't this read higher due to the charging? Sadly I dont live on the lake so any diagnostic on water makes things difficult, and this bogging seems to only occur when in the water. Any help is greatly appreciated.

 

[CharlieB]

Re: Bayliner Jazz Boggs under load

Generally any lean cough, hesitation, of bog on acceleration is caused by dirty carbs and/or too lean an idle mixture.

Once you have thoroughly cleaned the carbs and made double sure that the float levels are all set as linied out in the service manual, then adjust the idle mixture screws 1 and 1/2 turns out from VERY lightly seated to provide enough fuel to start the motor.

Once running and in the water, cause the motor MUST BE loaded (in gear) , with a jet simply in the water as the jet is always loading the motor, then adjust each idle set screw to achieve the best possible idle speed.

Once set to best idle speed then back each screw OUT an additional 1/8 turn to provide the additional fuel necessary for acceleration.

Test by slamming the throttle to WOT, if ANY lean cough, hesitation, or bog, then further richen (back out) each idle mixture screw just the width of the screw driver blade slot and re-test acceleration.

Repeat as required til perfection.

 

[mdawg48331]

Re: Bayliner Jazz Boggs under load

Thanks charlie I'll check that out this week hopefully.