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Author Topic:   1998 Suzuki 100: Propellers That Can Be Fitted
RJG posted 12-19-2014 08:55 AM ET (US)   Profile for RJG   Send Email to RJG  
My son just purchased a 1975 Montauk with a 1998 Suzuki 100 two stroke. Great boat that will clean up nicely. Are Suzuki propellers of this motor unique to Suzuki or are they interchangeable with a different manufacturer? Any suggestions? Thanks in advance


jimh posted 12-19-2014 10:28 AM ET (US)     Profile for jimh  Send Email to jimh     
There are several propeller manufacturers that make lines of propellers with a propeller hub design that is constant among all their propellers. Propellers of this type can be adapted to many outboard engine brands and models by selection of the appropriate propeller hub components. These propellers thus become more or less universally useful, although there are still obvious limitations for the diameter of the blades in order to fit into the propeller aperture of various outboard engines.

The propellers have a more or less universal hub design. What fits into the hub is usually a plastic coupler which is designed to give away under high stress. This plastic coupler then mates with a metal coupler. It is this metal coupler that is designed individually for various different brands, to suit the diameter and number of splines on the propeller shaft. It is also necessary to use appropriate thrust washers and sometimes spacer washers.

In summary, there are hundreds of propeller that can be fitted to the Suzuki. There is no reason to limit your selection to a propeller sold under the Suzuki brand name.

tedious posted 12-21-2014 06:35 PM ET (US)     Profile for tedious  Send Email to tedious     
Bob, in order to fit a particular motor, the prop needs to have a hub diameter which matches the gearcase diameter of the motor's lower unit, and have the correct spline configuration to fit the prop shaft. Overall blade circle diameter also matters, but it's less of a concern - generally, once you match the gearcase size, the overall diameter is going to work.

Nowadays, the aftermarket prop manufacturers build generic props; you get a prop for the diameter gearcase you have, and then you buy a "hubkit" to fit your particular motor. In years past, this wasn't the case, and the hub was not interchangeable, so you bought a whole prop that would fit for the gearcase size and spline configuration you had.

To get a sense of how this all works, you may want to browse the "Dan's Discount Props" site at

Of course, getting a prop to fit the motor is the easy part - you then need to get the right pitch for your application, which is as much art as it is science. If that's what you're looking for, as again and you'll get some good help from this site.

Hope that helps!


tedious posted 12-21-2014 06:37 PM ET (US)     Profile for tedious  Send Email to tedious     
Ahem - "ask" again.


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