image of an outboard starter motor on a white background

Tohatsu Outboard Starter Motors

This collection is for Tohatsu starter motors only (no alternators or other electrical parts), covering many common Tohatsu outboard applications where an electric start motor is fitted.

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My outboard clicks but won’t crank, what should I check first?

Start with battery health and connections. A weak battery, corroded terminals, or a poor ground can mimic a failing starter. Check for clean, tight cable ends and good voltage under load. If those are fine and you still see inconsistent engagement, grinding, or a starter that spins without turning the engine, the starter motor (or solenoid) is a common next suspect.

How do I identify the correct Tohatsu starter motor?

Use the starter motor part number from your current unit if possible. If you don’t have it, use your outboard’s model and serial number, then confirm the key specs: voltage, mounting pattern, nose length, pinion tooth count, rotation and terminal layout. Clear photos of the starter label, mounting face, pinion gear and terminals help confirm a like-for-like match when multiple variants exist.

Does every Tohatsu outboard use the same starter motor?

No. Different model years, variants and electric-start configurations can use different starters. Even within the same horsepower family, mounting or pinion specs can change. That’s why part-number matching is best. If you’re unsure, collect your engine model/serial and the details from the old starter motor, those specifics are far more reliable than choosing by brand alone.

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Choosing a Tohatsu Outboard Starter Motor

Basic start-system checks before you replace

Hard starting can be caused by battery condition, corroded cables, or poor grounds, especially after storage. Cleaning terminals and confirming voltage under load can save time and protect the new starter from repeat strain. If your outboard cranks inconsistently, it’s worth checking those basics alongside selecting the correct starter motor specs.

The small differences that matter most

Tooth count, rotation, mounting pattern and terminal layout are the usual deal-breakers. Even if the casing looks right, the wrong pinion or nose style can prevent engagement. Use the bullet checklist before checkout, and don’t rely on “looks the same” as a selection method, marine starters can be deceptively similar.

Shop Starter Motors by Engine Model: Yamaha Starter Motors | Mercury Starter Motors | Suzuki Starter Motors

Match by engine ID + starter part number

Outboards often have multiple variants within the same family, so engine model/serial plus the existing starter part number is the safest combo. If the part number isn’t readable, confirm voltage, mounting and pinion details. A quick photo set (label, mounting face, pinion gear, terminals) makes it far easier to avoid a near-match that won’t install cleanly.

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