Will a Briggs and stratton engine from a Murray riding mower fit on a bolens mower?

In general, a Briggs and Stratton engine from a Murray riding mower may fit on a Bolens mower, but compatibility depends on several factors, including engine mounting points, drive system connections, and the mower's overall design. You would need to check the engine model numbers and specifications to ensure that they match in terms of size and mounting requirements. Additionally, modifications might be necessary to make it work properly. Always consult the manufacturer's guidelines or a small engine expert before attempting a swap.