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Well actually, it is not shown upside down. What they did was save money by reusing an older drawing where the “flat side” was stepped down to make room for a wave washer to provide friction to make the throttle stay where you put it (motors without twist-grip throttle control). Wave washer was not used on such motors and the flat side was actually flat. Guess they didn’t figure on people actually paying attention to the drawing.
I guess myself and some others mistakenly thought that this was drawn upside down. I suspect that this reused mounting ring drawing from the 3 hp led to a lot of misunderstandings over the years wherever it was copied to the larger hp manuals. Thank you, Frank for pointing out this distinction.
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That would be one solution to try, if you got a throttle control gear from a later model that had the 1/4-20 screw. But not sure if you used that, would it also prevent you from idling low enough to shift?
I think I only ran across that once or twice but don’t really remember what I did.
In one case I may have actually filed down the leading edge of the cam a little to create a sharper angle that would pick up the roller easier.
1. Have you checked synchronization to see if the cam needs to be adjusted in a little?
2. Is the throttle control pinion #19 meshed properly with the throttle control gear #21?
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