Honda BF75 prop shaft

[Chris Carson]

Hi. I am hoping that someon has experience of pulling the prop shaft of a Honda outboard. When my boat came ashore last week I drained the lower unit oil but was greeted by two small ballbearings stuck to the magnetic drain plug. I have pulled the end gear casing and bevel gear with no problem. Everything looks good and the gear/clutch selector moves back and forth when the gears are selected. However I see from the expanded parts view that there are 4 small ballbearings on the shaft which apear to be under the clutch selector. Whilst I wavered about shoving it all back together, I guess I need to press on and investigate. The question I have is has anyone ever taken out the pinion gear? I am worried that if I managed to get the pinion gear nut out, would I be able to get it back in tight enough? It needs to go in at 95nm of torque, and I have my doubts that it can be acheived by turning the drive shaft with a mole grip, which is about the limit of my "workshop"

Hopefully someone can advise me

Thanks, Chris

 

[gordmac]

Might be worth asking on some fishing forums, they tend to use outboards.

 

[roy851]

Grip the driveshaft in a big(ish) vice as tight as you can get it. Undo nut, remove pinion gear. Shouldn't be a problem getting it torqued back up.
The alternative is to buy the special tool which fits on the driveshaft splines

 

[Chris Carson]

Thanks guys. I looked into the tool you mentioned roy, but its an 85 euro import, (or whatever Honda UK would rob me, I tend to not even ask). I don't think there is any way to undo the nut with the drive shaft in a vice because the nut is to far inside the casing which is only about 3 inches wide. Besides, a socket or ring spanner wont go on it, it needs to be an open ended spanner. I will have a bash today at holding the nut in a spanner and trying turning off the drive shaft with big mole grip. If it does'nt work, I will try and find a local metalwork company. i am sure it should be simple enough for somone with a decent workshop to do.

Chris