Slow Starter

[hewes1010]

I have a 2001 130hp. When I first turn the key, the starter is barely able to turn over the motor. After a second or two it will begin spinning fine. I have a new 1000 CCA battery that will not start the motor. I need both batteries to get it started. Cleaned the connections all the way to the motor. Removed starter and polished armature. No change. Any thoughts?

[dorf]

Sounds like high resistance in the cabling(wires). I'll bet they are corroded inside and the ground is insufficient.
Just a guess.

[rodbolt17]

a voltage drop test on the positive and negative cables would tell ya.

[hewes1010]

I will run new wires straight from batteries to motor and bypass all connections. I'll let you know.

[99yam40]

It would be a lot easier to pin point the problem with a volt meter like Rodbolt said and then fix what is wrong