Altenator or Stator Problems??

[Hugeman]

I have a 1999 25 HP Mercury electric start with remote controls. Serial # 06765886. <br />I hae been having some troubles with the starter and recently had it rebuilt. I recently bought a new marine battery with 850 cranking amps. All that is run on the battery is a fish finder and the motor. It starts fine at the start of the day, but after one or two starts all I get is an audible click. Running a multimeter on the battery posts with the motor running shows the same output as when it's not running. (12.75 to 12.85) I am not even sure this motor has a altenator or stator on it? How do you look for it? Do you have to take off the flywheel? <br />Even so it seems the battery should have enough juice to keep the starter going later in the day? I have run tests to the bottom of the starter post with the multimeter with someone turning the key and power finds it's way there. Could my starter rebuild be bad? I would love to fix this myself instead of dragging my motor in the the shop?<br />Looking in the Selog manual it does not show this model number to compare wiring with. I'm looking to see if the motor has an altenator or stator.<br />Thanks

 

[Hugeman]

Re: Altenator or Stator Problems??

bump

 

[sparkroost]

Re: Altenator or Stator Problems??

You need to check your connections. check the starter solenoid connections. Also check the battery voltage when this situation occurs. If you still have 12.5 volts then check voltage across the BIG two posts on the starter solenoid. You will need to disconnect the lead going to the starter to check the solenoid. You should have ZERO volts across the two big poles with the key switch in the start position and 12.5(or battery voltage) volts from the starter lead to ground that you disconnected.<br /><br />The clicking you heard could also be a poor ground of the starter solenoid. You need 12v to activate the solenoid. If you have less due to a corrosion problem or bad connection it will give less voltage to the solenoid and may not trigger it.<br /><br />If all that checks out I would suspect your starter. You may have 1 of many windings open in the starter and it will pull a good many amps when starting, draining your battery every time you start it. There is usually an indication that the engine is not turning over fast or as fast as it used to turn at startup. This you can test by putting a current meter on the starter and see what it is drawing at start. check the AMPS against the rated current of the starter.