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how to start a 15.5 hp briggs & stratton engine?

I just replaced the flywheel gear but the key keeps shearing. I have tried three keys but the same thing happens. What could be the problem?
Wayne, August 2008
The flywheel nut is not tight enough. The drive is transmitted by the taper fit - the key is for location only. Use a torque wrench and tighten it correctly. If you have no torque wrench, use a 12 inch lever (NO LONGER) and get it AS TIGHT AS YOU CAN. For most people, that's about 80 foot pounds, which isn't too far out.

phil_saunders@bigfoot.com

Phil Saunders, August 2008
link Click here to see other fixes for Briggs & Stratton 15.5.