Blade Cutting Problems - Echo SRM-3020U Operator's Manual

Hide thumbs

Table Of Contents

Table of Contents

OPERATION

Push and Pull Forces

Push and pull forces are reactive forces that push the

equipment directly toward the operator, or that pull the

equipment directly away from the operator. These forces

are the result of cutting on the sides of the blade. The

direction of the force depends on the side of the blade

being used, and the direction of blade rotation at the point

of contact. The reactive force is in the opposite direction of

blade rotation at the contact point, regardless of where the

contact is being made. These types of reactive forces are

also called "Blade Thrust.

As shown in the illustration, a blade turning

counterclockwise will cause the equipment to pull away

from the operator if the point of cutting resistance is on

the left side of the blade. If the point of cutting resistance

is on the right side of the blade, the equipment will push

back toward the operator. In both examples, the reactive

force is in the opposite direction of blade rotation at the

contact point where resistance occurs.

Kickout

Kickout is also a reactive force caused by resistance to

cutting, but the direction of blade thrust is lateral (to the

left or right of the blade), instead of forward or back toward the operator. In

most cases, Push, Pull, and Kickout can be reduced or eliminated by:

• Using the correct blade for the cutting job

• Using properly sharpened blades

• Applying consistent, even force to the blade

during the cut

• Avoiding obstacles and ground hazards

• Using extra care when cutting harder materials

such as extremely dry brush, saplings, and

small trees

• Cutting from a stable, secure position