Briggs & Stratton 25M137-0005-F1 Snow Series 21 GT 420cc Horizontal Engine NetSuite-ID_599611 21B977 series engines

21B977 series engines

See the Fit Guide for a complete list of saws this chain fits

A C1Q-S102

Creates stability

These are heavy duty outer filters

Briggs & Stratton 25M137-0005-F1 Snow Series 21 GT 420cc Horizontal Engine NetSuite-ID_599611 21B977 series enginesThis genuine 420cc Briggs & Stratton single cylinder engines are specially designed to provide more power for quick and easy removal of all types of snow. With a power rating of 21 ft lbs of gross torque, this engine features a recoil starter plus a 110 volt Electric starter and Maintenance free Magnetron electronic ignition. With a manufacturer limited warranty of 2 years consumer use 90 days commercial use, Briggs & Stratton provides power that you