highly likely the starter. I would confirm by setting a known charged batt by the dr front tire & jumping to the starter large/small terminals. clamp them together first before making the final connection at the battery to keep sparks from messing up the stud threads & make sure the clamps cannot shift & touch the starter case (a helper to hold them might work) when it starts cranking


live every 24 hour block of time like it's your last day on earth