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Jeff G.
Jeff G., Marine Mechanic
Category: Boat
Satisfied Customers: 4724
Experience:  42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance
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What is the best way to remove a drive shaft that is stuck

Customer Question

what is the best way to remove a drive shaft that is stuck in the drive gear end of a 18 horse outboard
Submitted: 1 year ago.
Category: Boat
Expert:  Jeff G. replied 1 year ago.

What engine? Stuck in the lower unit? Or the crankshaft? What are you trying to do?

Customer: replied 1 year ago.
It is a18 horse evinrude the shaft is stuck in the crank and came loose from the lower unit
Expert:  Jeff G. replied 1 year ago.

There is not a lot you can do. Turn the engine upside down and soak the shaft with a penetrant fluid, after a few days it may come loose. You can also put a large pair of vice grips on the shaft and hammer it out. This works most of the time.

One final way to get it loose is to drop a few drops of muratic acid on the shaft with the engine upside down and let it dissolve the rust. You can buy muratic acid at any hardware store, used to clean concrete and used in swimming pools. Use a respirator and eye protection. Be careful the acid only runs down the shaft. Careful it will eat aluminum.

After a few hours of sitting and dissolving the rust you may need to repeat. Turn the engine right side up and flush with plenty of cold water, then use the vice grips and hammer the shaft out.

Lots of luck and let me know if I can help further.

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