I have an 89 25 hp Johnson with electric start. The spring under the starter motor spring is broken into two pieces. The starter still works ok but I figure I should change it. My question is what is the procedure to get the nut off that holds the spring on. I am thinking can just jam something in between the gear and the fly wheel but it looks like the kind of nut that that will require a lot of force to remove. I have a new spring and nut