Title: Test and adjust the blade/operator-presence control system (engine brake).
Course: Basic Small Engine Repair (20109) > Section: Diagnosing and Servicing Lawn Mower

Tests and adjustments should be made according to manufacturer’s specifications and instructor’s guidelines.

Process/Skill Questions:

- How does an operator-presence control system work?
- In what way is an operator-presence control system a safety feature?
- Is an operator-presence control system a legal requirement for lawn mowers?
- What is a blade, or engine brake?