I have a 425 Magnum 2x4 that I use on the farm (most during deer season), and I am not sure of the model year. I want to service it before I start using it this year. I have not worked on it before, other than replacing the headlight bulb. Oil change and spark plug are definitely on the list. I am not sure how to access the spark plug. I also have a few issues that need to be fixed. 1 The starter spins but does not engage. Would this be a bendix issue? 2 It tends to be very hard to get into any gear position from neutral when the engine is running and then sometimes jumps out of gear. 3 The recoil starter does not always engage. Any help would be greatly appreciated