Got a question for you Pro's

[1FASTLASER]

Ok trying to help a friend on the puter with his boat and getting it set up correctly. The thing that I need to know is from the serial number can you tell if the motor is a long shaft or short shaft. If not on these Yamaha built Mariners where do you measure from and to to determine if in fact what shaft he has long or short. I know they made both the long and short shaft versions and from the pics it appears he has the long shaft. The serial number is as follows SER#6E9L412818. Also if anyone possibly knows where I can find a Trim and tilt system for this motor please gimme a holler. Thanks in advance.

 

[emckelvy]

Re: Got a question for you Pro's

Sometimes that "L" in the serial # indicated Longshaft but I wouldn't guarantee it.

The most positive way to determine any particular motor's length is to measure it directly. Measure from where the motor sits on top of the transom, to the "anti-ventilation" plate (also mis-nomered as the "cavitation plate") on the lower unit.

Approx. 15" is Short Shaft or S/S;

Approx 20" is Long Shaft or L/S;

Approx 25" is Extra Long Shaft or XLS

When you measure the boat's transom, the dimension from the top of the transom where the motor sits, to the center of the boat bottom (keel) is the measurement for shaft length.

Note that for low-to-medium-performance applications you'd normally mount the motor so the anti-ventilation plate is no lower than, to 3/4" above, the center (keel).

On most ski-boat-type-hull applications you might run the motor 1" to 1-1/2" above the keel but this will vary based on hull design and prop selection.

What you do is decide where to start, and raise the motor from there for best performance. Most times I'll try 3/4" above the keel and work up.

Anyway, hope that helps with part of your question, don't know about PT&T stuff for your motor except maybe check on eBay, or perhaps an aftermarket application would work for you.........ed