In addition to Kim's usual on target advice..... After installing the plate first (just leave the spring on the bench and forget about it for a few seconds), then after securing the plate... look closely at the "anti reverse" spring.
Notice that in one position, the spring will set FLAT but if turned over, it will not. It's simply a case of having the spring positioned so that it will sit FLAT, then slide it down the crankshaft taper so that it simply sits alongside of the metal grounding contact of the plate... nothing complicated requiring rocket science mentality.
HOWEVER... One very important aspect of the "anti reverse spring" pertains to lubrication which is essential, and the lubrication can be only one type of grease (Type D) which is a high pressure grease used on such type bearings as generator, magneto, or wheel bearings... actually any bearing that experiences very high revolutions. DO NOT attempt to use any other type grease as it will not last!
After the spring is in place, use a small stick, sturdy toothpick, a tool of your choosing to grease the spring's contact area on the crankshaft thoroughly.
The container of the grease must specify that it is a "Extreme High Pressure" grease, no doubt available at any automotive parts shop, and also at your local dealership..... part number 508303.
If you skip this step, the friction will wear out the metal of the spring, rendering it useless and a ridge will wear into the crankshaft. A damaged or non existent anti reverse spring will result in a scenario whereas when starting the engine, the engine could easily hiccup, spit back, whatever (which any engine normally experiences at times) but this engine would start running in the reverse rotating mode. The anti reverse spring, hence it's name, prevents this condition.
