Use your Honda model and serial number first, then compare the OEM part number from the parts diagram or service manual with the product listing. Similar Honda outboards can use different flywheels, keys, or related hardware depending on model family and production range.

• Confirm horsepower, model, year, and serial number.
• Check the OEM part number before ordering.
• Inspect the crankshaft keyway and flywheel taper for damage before reassembly.
• Replace damaged keys rather than reusing a distorted or partially sheared key.

Flywheel and key issues are often discovered during no-start, timing, charging, or powerhead service work. If the key has sheared or the flywheel has been removed, inspect the mating surfaces carefully before installing replacement parts.

• Engine cranks but will not start after a sudden stop or impact.
• Ignition timing appears incorrect after troubleshooting other causes.
• Flywheel has been removed during powerhead or crankshaft service.
• Key shows wear, deformation, cracking, or partial shearing.

Can I order a Honda flywheel key by horsepower only?

No. Horsepower is only a starting point. Honda flywheel and key applications should be confirmed by model, serial number, and OEM part number whenever possible.

Should the flywheel key be replaced when the flywheel is removed?

If the key shows any wear, distortion, or damage, replace it. A clean, correctly fitted key helps keep the flywheel indexed properly on the crankshaft.

What should I check if a flywheel key keeps shearing?

Inspect the flywheel taper, crankshaft keyway, key fit, and installation procedure. Repeated key damage can indicate improper fit, damaged mating surfaces, or another mechanical issue that should be corrected before reassembly.

• Honda Internal Engine Components
• Honda Crankshafts
• Honda Engine Gaskets
• Honda Electrical System Parts
• OEM Schematics