Technical library
Guides & technical reference
Written for people who order parts for a living. Each of these answers a question that actually costs money when it is answered wrongly — a wrong shaft length, an unchecked serial range, an obsolete number ordered against an old list.
Model identification
Identifying an outboard model before ordering parts
How to read a model designation, where the identification plate sits on each major brand, and which details actually change the part number.
6 min readWhere to find the serial number on an outboard
Typical identification-plate locations across the major brands, what to do when the plate is missing, and why the serial matters more than the model year.
5 min read
Parts reference
How part number supersession works
Why the number stamped on your old component may no longer be orderable, how supersession chains work, and how this catalogue resolves an obsolete number to the current part.
5 min readSending a bulk parts list for quotation
How to structure a spreadsheet of part numbers so it can be quoted quickly and accurately, and what we do with numbers that do not resolve.
4 min read
Buying guides
Shaft length, transom height and rigging selection
How shaft length is measured, how it relates to transom height, and what else changes when you change shaft length on a repower.
6 min readSelecting a propeller for an outboard application
How diameter, pitch, blade count, material and rotation interact, and how to use wide-open-throttle RPM to confirm the right propeller.
7 min read
Maintenance
Compliance
Still not sure which part you need?
Send us the engine model and serial number — or a photograph of the plate — and we will identify the correct component before you order.