Jacobsen Front-engine lawn tractor Parts — Browse All Models

Top-selling Jacobsen front-engine lawn tractor replacement parts

• Ignition switch. A riding mower ignition switch supplies power to the electrical components of the engine. When you turn the key, a metal contact transmits energy to the various connections on the switch. The ignition switch includes a lock that allows the switch to turn only when the tumblers in the lock are in the correct position.
• Mandrel assembly. The mandrel assembly consists of the housing, bearings, and blade shaft. The mandrel mounts to the mower housing and has a pulley on top. When the user engages the blades, a belt turns the pulley on the top of the mandrel and spins the mower blade.
• Mower blade. The mower blade is affixed to the end of a shaft and has one sharp edge on the top side. As the shaft spins, the sharp edge cuts the grass. Because of the upward angle of the sharp edge, the grass blows upward and out to the discharge chute.
• Starter solenoid. The starter solenoid is a high-current switch that sends power to the starter motor to spin the engine when you turn the ignition key to the start position.

Replacing the spark plug in your Jacobsen front-engine lawn tractor

• Park the tractor on a level surface in a well-ventilated area and set the parking brake.
• Turn the ignition switch off and remove the key. Let the engine cool.
• Wear work gloves to protect your hands.
• Lift the tractor hood and disconnect the spark plug wire.
• Use a spark plug wrench to remove the spark plug from the engine.
• Using a gap tool, set the gap on the spark plug to the gap specified in the owner’s manual. For this engine, the gap is .03 inches. Thread the new spark plug into the engine and tighten it with the spark plug wrench. Tighten the spark plug firmly, but don't overtighten, so you can remove the spark plug easily the next time you replace it.
• Reconnect the spark plug wire and lower the tractor hood.