OutdoorKing Repair Forum Forums Collectors Corner Identification of Particular Machines Scott Bonnar Model 520 Rotary

Ahh good you found the numbers on the cowl:) heres some pics of mine,maybee help to compare. I think mine is mostly original other than the throttle control. Im sure you may be able to Get/purchase access to the manuals area for the Briggs engines The moderators will guide you. Getting an SB Mower manual might be a time thing,im sure Scientific did one,but another memeber may have one also Good luck with you little toy