Low Cost Lawnmowers

XR Series 3.5 HP 127cc Horizontal Shaft Engine. With 3.5 horsepower and a 127cc horizontal shaft, this engine is designed to handle tough jobs with ease. It features a heavy cast iron flywheel for added durability, a lo-tone muffler for quieter operation, and a 6:1 gear reduction for increased power. This engine is ideal for use in lawn mower parts and accessories, as well as other outdoor power equipment. It is a reliable and efficient choice for those looking to upgrade their current engine or build a new machine from scratch. Trust in the quality of Briggs & Stratton to get the job done right. Replacement engines are very specific to your current model number. Heavy Cast Iron Flywheel: Helps maintain engine speed and smooth operation. 6:1 Gear Reduction.