I have a 6400 with loader, solenoid clicks when I try to start. Can jump across terminals then will start off key a few times, then back to clicking at solenoid. Bought two new solenoids none fit, and cant figure out how they come off, without removing starter. Is there a relay between solenoid and key that could be bad, if not, how does solenoid come off. If I have to remove starter, HOW IN THE WORLD DO I GET THE BOTTOM STARTER BOLT OFF AND BACK ON. Tried today, used crow foot wrenches, every sort of swivel and extension known to man, no luck, I can barely move it with swivel, but access from bottom is horrible. Wondering if there is an easier way to access or if someone has had any success on these before, scared to start without more information. hoping it is a relay, however starter drive does act funny. thanks for any help.