change timing on a 3.5 vertical B&S?


Old 07-22-08, 06:11 PM
indypower500's Avatar
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Join Date: Aug 2007
Location: new hampshire
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change timing on a 3.5 vertical B&S?

I had a strange call today. He was looking to change the timing to TDC on a 3.5hp vertical B&S engine so he could run it on Hydrogen. Anyone ever heard of doing this?
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Old 07-22-08, 11:45 PM
cheese's Avatar
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Join Date: Jul 2001
Location: USA
Posts: 16,575
Never heard of it. You can change timing by removing the flywheel key and setting the flywheel wherever you want on the crankshaft, and then tighten the flywheel nut very tight, but there is no timing index to set it by.
Old 07-23-08, 04:49 AM
Join Date: Jul 2006
Location: Central New Hampshire
Posts: 754
Cheese, I told him the easiest thing is drill & tap a new mounting hole next to the existing hole for the coil.

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