The Complete Handbook of Outdoor Power Equipment Accessories

Chapter 1: Understanding Outdoor Power Equipment Accessories

An accessory, in the context of outdoor power equipment, is any component that attaches to a prime mover to enable, enhance, or alter its function. The prime mover is the machine itself: the walk-behind mower, the zero-turn mower, the tractor, the string trimmer, the chainsaw, or the snow blower. The accessory is what does the actual work in contact with the material. A mower deck without a blade will not cut grass. A snow blower without a scraper blade will leave a thin layer of ice. A tiller without tines will not break soil. Understanding this relationship is the first step toward making intelligent purchasing and operational decisions. You are not buying a shiny attachment; you are buying a specific tool that must match the machine's power output, speed, and mounting geometry.

Consider the common lawn mower blade. It is not a single piece of metal that spins. It is a carefully engineered airfoil. The shape of the blade is designed to create a low-pressure zone above it, which lifts the grass blade upward before the cutting edge severs it. This lift is what produces a clean, upright cut and allows the clippings to be discharged out of the deck. If you install a blade with a low lift angle on a mower designed for high-lift mulching, you will get a ragged cut and clumping discharge. Conversely, installing a high-lift blade on a mower with a shallow deck can cause the engine to