One thing to do is keep the engine well-tuned so it starts without extended periods of cranking. If the battery ever gets low enough that the cranking speed drops, the starter will begin to draw massive amounts of current and damage the circuits inside it, so never keep grinding on a starter until it won't turn any more, or turns very slowly. A properly-tuned stovebolt engine with 12 volts against a 6V starter should start within 2-3 seconds of starter operation every time. The starter will last for many years under those circumstances.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!