Alternative gear case screw??? 1955 RDE-17 25 hp Johnson

[The Boat House]

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• This reply was modified 5 years, 4 months ago by The Boat House.

[The Boat House]

• This reply was modified 5 years, 4 months ago by The Boat House.

[fleetwin]

It’s like Frank says, the OEM screws should be used for the reasons mentioned. That being said, tis a shame OMC could not have put a thinner slot/allen/phillips on those screws cuz they sure do “bugger” easily….Some of the clam shell gearcases use a phillips, but yours uses that pesky slotted screw…..

[crosbyman]

……..But the hardware does not have washer that will fit in the recess of the clam shell

if need be you should be able to reduce the diameter of a ” to big a washer” by sqweezing it between 2 nuts and spinning it on a grinder wheel with your drill

Joining AOMCI has priviledges 🙂

[Mumbles]

Look around for a later model parts motor. Chances are it will have Phillips head screws which are an improvement over the straight slotted screws. And yes, a hand held impact with the correct bit will be needed to install/uninstall them without damaging them.

[vintin]

Mumbles I’m in the market for a hand held impact driver.

Got any suggestions on good one?

I’m in a buying mood!

[Mumbles]

I prefer a 3/8″ drive over a 1/2″ drive for use around outboards. Try your local auto supply or tool store for one. One thing I’ve noticed lately is all the new ones are smaller in diameter than the old ones but they are supposed to work OK. Being smaller, I’ll bet I know where they are made.

[retiredoz]

I’d think about getting a 1/4 ” 18 or 20 volt electric impact wrench- ample poop to remove 99 % of nuts or bolts or screws you’re likely to encounter on an outboard. A real time-saver to boot.. HF sells several models from $40 and up….

[billy-j]

What I did was to get a large old screw driver and used my bench grinder to grind the screwdriver blade to fit these screws perfectly and I only use this screwdriver for these specific screws.

[frankr]

The electric or air impact drivers certainly are worthwhile, however for screwdriver-type screws, the hand impact driver is much better because the hammer blow keeps the driver bit seated in the slot (or Phillips) at the same time as torque is applied.

Conclusion: You need both.

[Author]

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