Yamaha 25 30 40HP 2-Stroke C Series Starter Motor 12V 11T CCW | Replaces 689-81800-11-00

Starter motor for Yamaha C25, C30 and C40 two-strokes, an aftermarket replacement for 689-81800-11-00. Eleven teeth, counter-clockwise. Also fits the Japan-built Mariner 25, 30 and 40 two-strokes of the same era. The one-way clutch gear on this unit is built thicker than the original, the original part was the weak link.

OE Reference Numbers

Primary reference: 689-81800-11-00

Substitute references: 689-81800-12-00, 689-81800-13-00

Mercury references: 50-814980M, 50-96359M, 50-97693M

Cross references reported by replacement part catalogs: Sierra 18-6410, ARCO 3420, Lester 18310, WAI 18310N, J&N 410-44088, Arrowhead SHI0085, API MOT5000N, Hitachi S108-80, Quicksilver 8M6007415

Buyer search terms: Yamaha 30HP 2-stroke starter, 689-81800, Yamaha C40 starter, Mariner 30HP starter

Reference Specifications

System voltage: 12V DC

Pinion: 11 teeth, counter-clockwise

Rated power: 0.6kW

Pinion OD: 33.1mm

Mounting: 2 lugs, 8mm holes

One-way clutch gear: reinforced

Weight: about 2.5kg

These figures come from compatible replacement listings, not from Yamaha factory drawings. Match them against the removed unit before ordering.

Fitment and Purchase Checks

Yamaha C25, C30 and C40 two-strokes plus the CV series, 1984 to 1997, two-cylinder engines. Mariner and Mercury 25, 30 and 40 two-strokes built in Japan, 1977 to 1992. Not the later three-cylinder 40. Count eleven teeth before ordering.

Why This Unit

The original one-way gear on these engines was thin and it stripped. This one comes with a reinforced clutch gear, that is the upgrade. Copper windings, coated armature. If the engine locks when it backfires, check the clutch before the pinion.

For Buyers and Distributors

Six month warranty, 20 pieces minimum, 10 to 15 days out. Certification papers on request. Give us the engine model and serial and we quote the same day.

Aftermarket notice

This listing is an aftermarket replacement part supplied by StarterStock. We are not affiliated with, authorized by, or endorsed by any original equipment manufacturer. OE numbers, model names and brand names are quoted for identification and fitment matching only, and remain the property of their respective owners.