? Water Pump Change Tohatsu 9.8 4 stroke?

[FL2AK]

Could someone please point me to a good "how-to" type website on how to change a water pump on a newer 9.8 Tohatsu 4 stroke outboard?

What similarities and/or differences are there in this task between this motor and the old 2-stroke OMC 9.9 outboards? (I've don dozens of those.)

Can someone tell me exactly what tools and socket or wrench sizes I'll need? (I assume all metric?)

I've just bought my first non OMC outboard, and am planning ahead. Specifically, I run in some pretty shallow waters in some pretty remote areas up here in Alaska, and I want to be prepared to change a water pump on the river bank, if required, but I don't want to carry an entire tool set with me (I'm trying to drop as much weight as I can from the canoe, which is why I bought the new o/b-better reliability-in the first place.)

 

[pvanv]

You need a 3mm (slightly undersize) punch to separate the shift linkage. Tohatsu actually sells one that is very good. A 10mm box to drop the LU bolts, and also 10mm for the wp bolts. It's actually less finicky than the shifter of the OMC 9.9/15 2-strokes, as it's non-adjustable. I recommend the Factory service manual (from a real dealer), as opposed to an aftermarket service manual.

 

[FL2AK]

Wait, so your saying you can do an entire water pump replacement with one wrench and pin punch? Nothing else?

 

[pvanv]

Yep. However, I typically use a socket for the pump bolts. It's a lot faster. Most ratchets will not clear the LU casting very well, so a box wrench is the tool of choice for those 4 bolts. You will find that the vast majority of fasteners you need to access for routine repairs on the Tohatsu MFS9.8A3 have 10mm heads.

 

[hipster dufus]

The man is right he walked me thru the replacement of mine a few hrs ago. First time I ever did it.it was something I worried over and he was a huge help. I did have the service manual good investment good luck

 

[FL2AK]

Well hey thanks. Sorry I didn't reply sooner, I've been out at the cabin property-no internet.

Sounds too easy. I'll stash the parts and tools in a kit on the boat, but, unless something goes wrong, I won't change it till next season.

It's just smart to be prepared for anything up here.