Husqvarna Starter Solenoid Wiring Diagram

If you are experiencing problems with your Husqvarna’s starter solenoid, you will need to inspect it for any possible damage or worn-out parts. One of the critical parts of your lawn mower or other Husqvarna garden equipment is the starter solenoid, which enables the engine to start. This article aims to provide you with the necessary information on how to check and diagnose your Husqvarna starter solenoid’s wiring diagram.

What is a Starter Solenoid?

A starter solenoid is a component of the ignition system that connects the battery to the starter motor. When you turn the key of your Husqvarna, the solenoid receives a signal from the ignition switch, which activates the starter motor. This small component is responsible for initiating the engine’s firing process, delivering the electrical current required to turn the engine over.

In essence, the solenoid acts as a switch, opening and closing the electrical circuit to the starter motor. The starter solenoid is essential to the proper functioning of your Husqvarna’s engine system, and any malfunction will prevent the engine from starting.

How Does a Starter Solenoid Work?

When you turn the key to start your Husqvarna, the electrical signal from the ignition switch reaches the starter solenoid. The solenoid then activates, using an electromagnet to pull a small plunger towards the main contact points, closing the electrical circuit between the battery and the starter motor. This action sends the electrical current to the starter motor, allowing the engine to start.

Once the engine has started and is running, the solenoid returns to its open position, breaking the electrical circuit between the battery and the starter motor.

How to Test the Husqvarna Starter Solenoid

If you suspect that your Husqvarna starter solenoid is not functioning correctly, there are several steps that you can take to troubleshoot the problem. Before you begin, you will need a multimeter to measure the electrical current through the solenoid. Here are the basic steps:

Step 1: Check the Battery

The first step is to check the battery and make sure that it is fully charged. Low battery voltage can cause various issues with the starter motor, including a malfunctioning solenoid. Use a voltmeter or a battery tester to check the voltage of your Husqvarna’s battery.

Step 2: Inspect the Wiring

The next step is to inspect the wiring of the starter solenoid. Look for any signs of damage, corrosion or loose connections. Check the wiring diagram in your Husqvarna’s manual to ensure that the wiring is correctly connected.

Step 3: Test the Solenoid

Now it’s time to test the solenoid itself. Connect a multimeter to the positive and negative terminals of the solenoid, and measure the resistance. If the resistance is less than 10 ohms, the solenoid is functioning correctly. If the resistance is higher, you will need to replace the solenoid.

Step 4: Check the Starter Motor

If the solenoid is functioning correctly, the next step is to check the starter motor. Use a voltmeter to test the voltage at the terminals of the starter motor when you turn the key. If there is no voltage, the starter motor may be defective, and you will need to replace it.

Wiring Diagram for Husqvarna Starter Solenoid

Here is the wiring diagram for Husqvarna starter solenoid:

Terminal Wire Color Function
1 Red Battery Positive
2 Yellow Ignition Switch
3 Black Ground
4 Red/Black Stripe Starter Motor Positive

Frequently Asked Questions (FAQ)

How do I know if my Husqvarna starter solenoid is bad?

The most common symptoms of a bad starter solenoid include the engine not starting or clicking sounds when you turn the key. To test the solenoid, follow the steps outlined in this article.

Can I replace the starter solenoid myself?

Yes, you can replace the starter solenoid yourself. However, if you are not comfortable working with electrical systems, it is best to consult a professional mechanic or electrician.

How much does it cost to replace a starter solenoid?

The cost of replacing a starter solenoid varies depending on the part’s price and labor costs. On average, you can expect to pay between $100 and $200 for the replacement.

What is the difference between a starter motor and a starter solenoid?

While the starter solenoid and the starter motor are both components of the ignition system, they serve different functions. The starter solenoid is responsible for opening and closing the electrical circuit between the battery and the starter motor, while the starter motor is the component that actually turns the engine over.

How long should a starter solenoid last?

The lifespan of a starter solenoid depends on various factors, such as usage, environmental conditions, and maintenance practices. On average, a starter solenoid can last between 50,000 and 100,000 miles or about 5 to 7 years.