Unit 12Unit 12Agricultural Agricultural MechanicsMechanics

SafetySafety

• 44% of farm accidents – machinery

• Safety steps must be followed

• Personal Protective Equipment (PPE)

Hand and Power ToolsHand and Power ToolsHand ToolsHand Tools

• Layout

• Cutting

• Driving

• Holding

• Turning

Hand and Power ToolsHand and Power Tools Power Tools Power Tools

Reading a Measuring Reading a Measuring TapeTape

EnginesEngines

Two-Cycle Engine• Two motions• Examples– Lawnmowers– Weed eaters– Chain saws– Jet skis

• Oil and gas are mixed manually

Four-Cycle Engine• Four motions• Examples– Automobiles– Large boats– Large motorcycles– Small air craft

• Oil and gas are mixed automatically

Engine PartsEngine PartsTwo-Cycle Engine Four-Cycle Engine

Spark PlugSpark Plug

• Converts electrical energy to working energy

• Keeps the pistons moving

Two-Cycle Engine Two-Cycle Engine OperationOperation

Four-Cycle Engine Four-Cycle Engine OperationOperation

Engine MaintenanceEngine Maintenance

• Daily maintenance prevents unwanted problems– Check oil– Add fuel– Clean filters– Check safety features