How to Use a Multimeter on Your Tractor

Before using a multimeter, follow these safety steps:

• Turn Off the Tractor: Ensure it's off and the key is removed.
• Wear Safety Gear: Use gloves and glasses for protection.
• Follow Manufacturer Guidelines: Check your tractor’s manual for electrical system details.

How to Test Fuses

1. Set Up the Multimeter: Select Ohms (Ω) to measure resistance.
2. Remove the Fuse: Locate the fuse box, usually near the battery or dashboard, and gently remove the fuse.
3. Test the Fuse: Insert probes into each terminal. A reading near zero ohms means the fuse is good; infinite resistance (OL) means it's blown.

How to Test a Battery

1. Set Up the Multimeter: Select DC Voltage (V).
2. Prepare the Battery: Access the battery terminals.
3. Test the Battery Voltage: Place the red probe on the positive terminal and the black on the negative. A fully charged battery reads around 12.6 volts. Below 12.4 volts may need charging; below 12 volts indicates a weak or dead battery.

How to Test Circuits

1. Set Up the Multimeter: Select DC Voltage (V).
2. Identify the Circuit: Find the circuit to test, like lights or starter.
3. Test the Circuit: Place the red probe on the positive side and the black on the ground. A voltage reading means the circuit works; no reading suggests a break or fault.

For questions or help with electrical diagnostics, contact your local Koenig Equipment dealership.