Info needed on 6-40 Engine and Body

What keeps the crankshaft from moving front to back. Is it a spring, a

bushing or a thrust bushing, gravity, space aliens or Roy C?

Second, If a Fellow wants to paint the body, but not the fenders. Have

you ever removed the rear fenders? It looks like there is alot of

attachments and nails on the rear fenders. Thanks again Jerre
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