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2001 50 hp mercury remove lower unit

"I need ot remove my lower uni

"I need ot remove my lower unit to replace the water pump impeller, i was told just remove the 6 main screws and the lower unit should come apart with a little force. When i remove the screws it gives me a gap but will not come apart fully, it is connected by a shaft. Don't know what shaft its the one closiest to my hull. it seems like its made of all thread, how do i seperate my lower unit?"
 
"That's a 'new' on

"That's a 'new' one ot me, but I believe there's a shift rod below the power head that has to be discoonnected first.

Jeff"
 
"Yes, there is a two (sect

"Yes, there is a two (section) shift-shaft (upper and lower) that are screwed together just above the cavitation plate (and accessable at that point).

You loosen the lock nut and then wind the lower shaft out (count how many turns you back off the lock nut and try not to forget or your gears may not shift properly upon reassembly).

Here's a diagram of what you are looking for...

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