Safety and Equipment Operation
What the exam tests
Safety and Equipment Operation covers personal protective equipment, hazard communication, hand and power tool use, mower and trimmer operation, slope limits, fuel handling, and basic tree-care safety under ANSI Z133.
Core rules
- Wear PPE matched to the task: eye and hearing protection for power equipment, chaps and a face shield for chainsaws, gloves, and sturdy boots.
- Read the label before mixing or applying any pesticide; follow the label exactly. Keep safety data sheets accessible.
- Two-stroke engines require fuel mixed with oil at the manufacturer's ratio, commonly 50:1. Never mix fuel near an ignition source.
- Keep guards and shields in place. Disengage blades, shut off the engine, and disconnect the spark plug before clearing jams or servicing.
- Operate zero-turn mowers on slopes only within the manufacturer's limit, often 15 degrees; use a walk-behind or trimmer on steeper ground. Mow across slopes, not up and down.
- Reduce chainsaw kickback with a chain brake, a sharp chain, and two-handed grip; avoid cutting with the nose of the bar.
Worked example
A zero-turn mower is rated for a maximum slope of 15 degrees. A site has an 18-degree bank. Reasoning: 18 is greater than 15, so do not operate the zero-turn there. Options are a walk-behind mower rated for the slope, string trimming, or replanting the bank with low-maintenance groundcover. Document the decision and brief the crew.
Traps
Removing mower guards for speed is a citation and injury risk. Fueling a hot engine causes fires. Hearing loss is cumulative; wear protection even for short jobs. Never use a chainsaw one-handed or above shoulder height.