Yamaha F50 F60 & OX66 200-250HP Starter Motor 12V 9T CCW | Replaces 69W-81800-00-00

Starter motor for Yamaha OX66 200, 225 and 250 two-strokes plus the early F50 and F60 four-strokes, an aftermarket replacement for 69W-81800-00-00. Nine teeth, counter-clockwise. Most of the OX66 units we see come off Gulf and Caribbean charter boats, engines from the nineties that are still running every day.

OE Reference Numbers

Primary reference: 69W-81800-00-00

Substitute references: 61A-81800-01-00, 69L-81800-00-00

Catalogs list it under Sierra 18-6424 and 18-6861, and ARCO 3429.

Lester 18444 and 18351N, J&N 410-44074 and 410-44091.

Arrowhead SHI0120 and SHI0137, API MOT5016, Hitachi S114-559B, S114-682 and S114-838A.

Buyer search terms: Yamaha OX66 starter, 69W-81800, Yamaha 225 OX66 starter, Yamaha F50 starter, Yamaha 250 two-stroke starter

Reference Specifications

System voltage: 12V DC

Pinion: 9 teeth, counter-clockwise

Rated power: 1.4kW (OX66 version)

Pinion OD: 28.2mm

Mounting: 2 lugs, 8mm threaded

Weight: about 3.2kg

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 OX66 200, 225, 250 from 1990 to 2005. Early F50 and F60 four-strokes, 2002 to 2005. Not the later F50 and F60 from 2005 on, those use 6C5-81800. Do not order this one as a substitute for 6K7-81800. The two look close but the rear cover sits at a different thickness, and it will not seat on that block.

Why This Unit

OX66 engines sit low in the bilge and the starters take spray. Brushes wear, the commutator glazes, one morning it just clicks. This one has copper windings and a coated armature. Clean the ground strap when you fit it. Half the no-start complaints on these engines are the ground, not the starter.

For Buyers and Distributors

Six month warranty. 20 piece minimum. 10 to 15 days to ship. Test the unit on the boat before the season starts, not the morning you launch.

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.