Yamaha 70hp prop shaft removal ?

GrahamSR5.4 · 02 November 2020, 17:38

Engine : Yamaha 70B 1988

I'm currently disassembling the lower assembly on a 70hp yamaha. I had to cut off the cap nut and fabricate a pullers to remove the carrier housing however the prop shaft stayed behind with the bearing. I have removed the shift shaft in the neutral position.

My question is how do I remove the prop shaft ? It has a lot of play in it just unsure what to do next as I don't want to damage it by pulling it as something is preventing it from coming out.

Thanks in advance

Davie · 02 November 2020, 18:07

It’s the thick thrust washer between the bearing you can see and the reverse gear. Attach a slide hammer onto the prop nut thread.

GrahamSR5.4 · 02 November 2020, 18:23

Cheers I'll give that a try !

GrahamSR5.4 · 02 November 2020, 18:49

Thanks Davie, came out no problem. Thought it was supposed to come out as one with the carrier so didn't want to go forcing it until I got a second opinion !

spartacus · 02 November 2020, 22:23

Hopefully not off topic - this step by step video is a breakdown of a Yamaha F225 lower unit.

Useful insight into the tools required.

https://www.youtube.com/watch?v=MnuyN-qHilg

The rebuild, especially the shims left me scratching my head!

https://www.youtube.com/watch?v=MGorf9bbzHY

Interesting stuff.

GrahamSR5.4 · 03 November 2020, 16:16

Lovely that might come in handy for assembly !