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Yamaha Outboard Starter Motors

Shopping for a replacement Yamaha starter motor? This collection contains Yamaha outboard starter motors only (no alternators or other electrical parts), covering many common Yamaha outboard applications where an electric starter is used.

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What information do I need to choose the correct Yamaha starter motor?

The fastest method is matching your current starter’s part number. If you don’t have it, use your Yamaha outboard’s model and serial number, then confirm the specs: voltage, mounting pattern, tooth count, rotation and terminal orientation. A few clear photos (label, pinion gear, mounting face and terminals) make matching much more reliable when there are similar-looking options.

Are Yamaha starter motors the same across different outboards?

No. Different model years and variants can use different starters even if the outboards look similar. That’s why selection should be based on part number and specifications, not brand name alone. If you’re unsure, note your engine model/serial and the details from your existing starter motor, those specifics are what prevent the wrong order.

My Yamaha outboard clicks or cranks slowly, what should I check?

Start with battery health and cable connections. Clicking and slow cranking can be caused by weak batteries, corrosion on terminals, or a poor ground, particularly in marine conditions. Clean and tighten connections and check voltage under load. If those checks are good and symptoms persist (grinding, inconsistent engagement, spinning without cranking), a starter motor replacement is often the correct fix.

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Yamaha Outboard Starter Motor Buying Checks

The safest match is the old part number

If you can read the existing starter part number, start there. When part numbers aren’t clear, use engine model and confirm voltage, mounting and pinion details. Many Yamaha starters look similar, so a spec-led approach is the difference between a smooth install and a return. Photos of the label and mounting face are especially useful.

Avoid the common “almost fits” mistakes

Tooth count, rotation and terminal layout are frequent mismatch points. Even a small difference can prevent proper engagement. Before checkout, compare your old unit’s pinion gear, nose length and mounting pattern. These are quick checks, but they eliminate most wrong orders in outboard starter replacements.

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Make sure the starting system is healthy too

Outboards suffer from corrosion and storage effects. If your starter struggles, confirm battery condition and clean, tight connections first. Voltage drop can mimic a failing starter and can also damage a new one over time. Doing the basics alongside correct part matching gives you the best chance of a reliable start.

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