Re: Outboard will not crank?
Crunching when flexed is a sure sign of corrosion, as well as nicks, cuts, abrasions, heat or voltage drop.
Get a multi meter and do a voltage drop test. The idea is that normally when you put both leads of a voltmeter on the same side of a circuit you should essentially get no reading. If you have a reading, more voltage is passing through the voltmeter than through the circuit. A voltage above a certain level is not acceptable and is what you will be testing for as described below.
To begin, connect your POS lead on the battery POS terminal and the NEG lead on the large incoming solenoid/battery terminal post and hit the starter switch. If the voltage meter reads more than .3 volts, the battery cable is bad, corroded or has a bad connection.
Now connect the POS lead to the incoming large solenoid post and the NEG lead to the outgoing large solenoid post and crank the starter. If the voltmeter reads greater than .2 volts, the solenoid is bad, corroded or has a bad connection.
Next, connect the positive lead to the outgoing large solenoid post and the negative voltmeter lead to the starter positive post and hit the starter switch. A reading of over .2 volts indicates a bad wire between the solenoid and the starter.
Lastly, connect the NEG battery post to the negative lead and the POS voltmeter lead to the engine block (no paint) and crank the engine. A reading of greater than .3 volts indicates a bad negative cable, corrosion or a bad cable connection.
Let us know what you find.