Re: Funny "TLC needed" boat ads on Craigslist.
Those old 7.5s were cool motors. I have one branded Elgin, but from what I've gathered they were sold under a number of names; Elgin, McCulloch, Sears, Scott, and even rumors that leftover stock was branded Ted Williams when Sears quit using the Elgin name. Perhaps a little over-ambitiously, they were engineered to be very portable. That they certainly are, with an almost amusing hand carry grip cast into the mounting swivel and an impressively low weight for their horsepower and age. Just a few drawbacks....
From the page at
http://www.elginoutboards.org/elgin1959to63.htm...
About the Low Profile Elgin/Sears/McCulloch motors...
The the low-profile 7.5hp and 9hp Elgin/McCullochs are very common but a real challenge to work on due to their compact design. The goal of making a low-profile, compact and very light weight motor were definitely achieved by Scott/McCulloch. And, to improve on a major shortcoming of the Bail-a-Matic motors, they even moved the waterpump and bailer impellers down below the waterline. Keeping the waterpumps below the waterline helped improve their longevity over the previous model.
To do almost any service work on these motors the powerhead must be removed. First you need to take the recoil, magneto and throttle linkage off the motor to gain access to the powerhead fasteners. The waterpumps are mounted upside down on the spray plate and there is a fair amount of plumbing for the bailer and cooling systems with press-fit connections. All of these are possible places to leak and reduce cooling water flow.
Almost all of these motors we have seen have problems with the motor cover being cracked, broken or missing. This is because the cover is made from very flimsy plastic. Even when new, the cover, latches and hinge were not strong enough to support using the hand-hold to tilt the motor up! Add 40 years for the plastic to get brittle and you have one really fragile item. If you have one of these motors never, ever, use the hand-hold provided in the back of the cover to tilt or cary the motor.
Should anyone attempt to restore one of these, it would be wise to have at least 2 donor motors for parts. A lot of PB Blaster (or like product), heat and patience is required to work on these motors.