🔧 Legacy - Starter Motor Replacement

Your Legacy’s starter motor spins the engine so it can start. When it fails, you’ll usually get a slow crank, a click/no-crank, or intermittent starting.

Difficulty Level: Intermediate | Estimated Time: 1.0-2.0 hours

---

⚠️ Safety & Precautions

• ⚠️ Disconnect the battery negative cable first to prevent an electrical short.
• ⚠️ Keep tools away from the starter’s main power stud (always “hot” if battery is connected).
• ⚠️ Work on a cool engine; the starter sits near hot engine parts.
• ⚠️ If you raise the car, support it with jack stands on solid ground (never rely on a jack alone).

---

🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 12mm socket
• 14mm socket
• 3/8" ratchet
• 3/8" socket extension set (3", 6")
• 3/8" wobble extension (specialty)
• Torque wrench (10–100 Nm range)
• Flat trim tool
• Needle-nose pliers
• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• Mechanic gloves
• Safety glasses
• Fender cover

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Starter motor assembly - Qty: 1
• Battery terminal anti-corrosion pads - Qty: 2
• Battery terminal protectant spray - Qty: 1

---

📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Open the hood and install a fender cover to protect paint.
• Have your radio presets saved if you care about them (battery will be disconnected).
• A wobble extension helps reach bolts at an angle.
• A torque wrench tightens bolts to an exact value.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Assumption: Starter is top-mounted on the FB25 (common on your Legacy). Torque values listed are typical for this application; use Subaru service specs if you have them.

Step 1: Disconnect the battery

• Use a 10mm socket and 3/8" ratchet to loosen the negative (–) battery terminal clamp.
• Lift the negative cable off and tuck it aside so it can’t spring back.
• If you want more room, use a 10mm socket to remove the battery hold-down and lift the battery out carefully.

Step 2: Remove the intake ducting for access

• Use a flat trim tool to pop up any plastic clips holding the snorkel/duct.
• Use a 10mm socket to loosen the hose clamp(s) on the intake duct.
• Remove the intake duct/snorkel and set it aside so you can see the top of the transmission/engine area.

Step 3: Locate the starter and unplug the small control connector

• The starter sits where the engine meets the transmission, with a small plug (signal wire) and a larger main power cable.
• Use needle-nose pliers (or your fingers) to release the connector lock and unplug the small connector.

Step 4: Remove the main power cable from the starter

• Pull back the rubber boot covering the main power stud.
• Use a 12mm socket and 3/8" ratchet to remove the nut holding the main power cable.
• Move the cable aside so it can’t touch metal.

Step 5: Remove the starter mounting bolts

• Use a 14mm socket, 3/8" ratchet, and 3/8" socket extension set (3", 6") to remove the starter mounting bolts.
• If a bolt is hard to reach straight-on, use the 3/8" wobble extension (specialty).
• Support the starter with your free hand as the last bolt comes out.

Step 6: Remove the starter

• Lift the starter straight out of the mounting pocket.
• Compare the old and new starter: same mounting ears, same electrical studs/connectors.

Step 7: Install the new starter

• Set the new starter into position by hand.
• Start the mounting bolts by hand first (this prevents cross-threading).
• Use a 14mm socket and 3/8" ratchet to snug the bolts.
• Use a torque wrench (10–100 Nm range) with a 14mm socket to tighten the mounting bolts: Torque to 50 Nm (37 ft-lbs).

Step 8: Reconnect the starter wiring

• Install the main power cable on the stud and thread the nut on by hand.
• Use a 12mm socket and torque wrench (10–100 Nm range) to tighten the nut: Torque to 9 Nm (80 in-lbs).
• Reinstall the rubber boot over the stud.
• Plug the small control connector back in until it clicks.

Step 9: Reinstall the intake ducting and battery

• Reinstall the intake duct/snorkel and clips using a flat trim tool.
• Tighten intake hose clamps using a 10mm socket.
• If removed, reinstall the battery and hold-down using a 10mm socket.
• Reconnect the battery positive (+) if it was removed, then reconnect the negative (–) using a 10mm socket.

---

✅ After Repair

• Start the engine and confirm it cranks strongly and starts normally.
• With the engine running, verify there are no warning lights related to low voltage (some may clear after a short drive).
• Check that the intake duct is fully seated (no hissing/whistling air leak).
• If your battery terminals were dirty, apply battery terminal protectant spray to slow corrosion.

---

💰 DIY vs Shop Cost

Shop Cost: $450-$850 (parts + labor)

DIY Cost: $150-$350 (parts only)

You Save: $300-$500 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-2.0 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.