Briggs And Stratton Vanguard 16HP V-Twin Engine. This engine was removed from a Countax C600H Ride On Lawnmower. It is in used condition but good working order, starts and runs very well. However, it may benefit from a basic service before use, oil/air filters, spark plugs etc. It has a Westwood/Countax pulley block fitted on crankshaft. Any Questions Please Ask. The item “Briggs and Stratton Vanguard 16HP V-Twin Engine For Ride On Mower” is in sale since Saturday, June 11, 2016. This item is in the category “Garden & Patio\Lawnmowers\Ride-On Mowers”. The seller is “cfmechanics” and is located in Lincoln. This item can be shipped to all countries in Europe, to United States, to Canada, to Australia.