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Discussion Starter · #1 ·
Does anyone happen to be doing belt/valve maintenance on their hyper 939? I need a pictures of the vertical cam alignment when the layshaft is at TDC for the horizontal cylinder. I'm wondering if they're supposed to be aligned like the horizontal cylinder or slightly angled. TIA!
 

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Discussion Starter · #3 ·
Thanks. So it looks like all the cams should be straight across when the layshaft is at the mark. I'm hoping the 939 is the same as the 821. I know the 1x98's are different. the vertical cylinder cams are tilted when the horizontals are in line. I think i somehow got 1 tooth off when changing the belts. Thankfully there's a little more that +-1 tooth of clearance before valves touch pistons.
 
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