Mercury 650 Reverse Clunk

[Dmpaul89]

Hey guys, picked up a neat old Texas Maid Aluminum bat and put a 1975 merc 650 on it. (3 cyl) That I had laying around. The motor I bought as a backup and never used, the Owner said the lower unit had just been "rebuilt" and I believed him cause it had new paint. anyway motor runs great, but reverse is worrying me. it "clunks" while engaged and Im not talking about the dogs engaging its just a steady clunk, clunk, clunk. every second or so while in reverse and the motor jumps up a little when it does. Whats going on? I did replace the cables, and thought maybe they needed adjusted but the slide is all the way towards the rear and I see now way to make it enage further. Thanks for any advise.

 

[littlerayray]

Sounds like something is misaligned when in reverse take it apart

 

[Texasmark]

Get one hand on the prop and other on the engine linkage, remote disconnected. While turning the prop shift into R and push it as far as it will go. Mark the spot. Continue to turn the prop and move the engine linkage toward N and when the prop breaks free, mark it. Reconnect the remote cable and shift into R while rotating the prop, engine off. Where are you now with respect to the marks. If you have a habit of shifting into R without the engine running or somebody turning the prop you dan damage your shift linkage.......per the serv. man.