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In Reply to: 170 Turn rhe key and nothing happens wiggle the key and works posted by Ryan Heiting on Tuesday, June 30, 2009:
Ryan : I interpret the problem you are having as a common inherant characteristic of a John Deere 170. My experience has been with many customers with the same problem, turn the key and click, and turn the key and click, and then when it finally turns the enging over it starts and rens fine.
What I have done to completely eliminate that problem inherant to alot other models of John Deere lawn tractors is a solution, what the exact problem turned out to be was the flywheel has teeth around the outside circumference of the flywheel, the flysheel teeth are composed of soft metal low carbon content and almost like cast steel. These teeth that allow the starter to engauge into them to rotate the flywheel when starting the engine are cut flat and are termed straight cut, as you look at the bottom side of the flywheel you can see the faces of the flywheel gear are approcimately 1/8" to 3/8" flats. When you turn the key to the start position the starter solenoid pushes a gera, the bendix gear into the face of the flywheel teeth, when the teeth hit together and not mesh they limit the travel of the bendix gear and don't allow the contacts that route voltage to the starter motor to connect. Thus you just hear a clic each time you turn the key to start until the gear teeth mesh.
How to remedy this is to remove the starter and I take a dremel tool with a grinder bit and if you look carefully at the bendix gear on the starter you will see a slight chamfer cut ont the trailin edge of the gear tooth itself. This ramp needs to be die grinded to a sharper slope to limit the flat surfaces of the flywheel gear and the starter bendix gear from not meshing correctly. I have done this to so many john Deere mowers I can do it without taking the bendix from the starter. I have made alot of money fixing this problem for my customers. The Deere will stat smooth every time after this modification is made.
Dale G. Basgall
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