Sam - actually if you think more about that, all cranks HAVE to run backwards.
The dogs are more like an overrun clutch - they keep the crank from spinning with the engine once it starts...
It can be a little confusing until you use one and think about it - if you're putting pressure on the crank in the forward motion - the engine is pushing back with the reverse motion.
If it suddenly pushes harder in the reverse motion by firing backwards, you're going with it.
They could possibly put some kind of breakaway safety catch so you can't have too MUCH force in that backwards direction - but, that'd be a tough balance to still allow you to crank without trouble.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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