The surge current while the solenoid "pull in" winding is engaging the drive gear into the flywheel is over 50 amps. As the gear engages and the armature begins turning the "hold in" winding takes over at about 8-10 amps and the pull-in current is disabled. You need a push button heavy enough to carry the initial surge. I recommend a marine-rated push switch with at least a 40 amp capacity- - - -more if possible, and 12 gauge or bigger wires.
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!