: Get a voltmeter and use the troubleshooting procedure outlined here...
:
: http://www.skytecair.com/images/Troubleshooting
: %20Diagram_5.0.pdf

The URL is mangled, but

http://www.skytecair.com/Troubleshooting.htm

gets you there. That's an excellent guide. Note they talk in
#3 about measuring the difference between two terminals
***while under load.****

When not loaded, all will look fine...


I'll add a few things.

a) Watch out for the prop.

b) In the steps showing you measuring at a terminal; there are THREE
places to measu

1) The terminal bolt
2) The lug
3) The wire itself

Assuming they are one & the same is a bad idea. If the lug-bolt
connection is dirty, 1&2 will be different voltages UNDER LOAD. If
the lug is not well-connected to the wire.... That's especially an
issue with aluminum wire...

Do not forget the grounds!! The battery ground, the engine-frame
ground.... all those matter..

You can also diagnose bad starter connections another way -- feel.
After the slow/failed crank, carefully feel each connection mentioned.
The bad one will be hot, and may be HOT. The advantage to this is
it is done after cranking, not while.
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