Yamaha 70ETLK Oil Pump Replacment

[Rathpr_boater]

The original 1985 oil pump needed to be replaced and I ordered a replacement from boats.net. The replacement pump is not an exact replacement and is arranged differently. There appears to be additional parts that will adapt the replacement pump to motor fittings. A bunch of other nuts and bolts and parts that I assume also is for adapting, but I have no idea what they are for. Additional parts that look like in-line filters (three) that I dont know what they do or where they go. The old oil lines a too short. The placement of the hose ports are different and I dont know which of the three hoses goes to which port.

There are no instructions. Does anyone know of instructions anywhere that would explain how this all fits together. Thanks.

[boscoe99]

Welcome to the wonderful world of Yamaha.

Pretty amazing isn't it? To issue a modification kit with absolutely no instructions.

Hopefully Rodbolt will come along shortly with some advice.

[rodbolt17]

on the rare occasions I have to replace a kien pump with the new mikuni style I have to go research the tech bullitens.
the changeover occurred sometime about 92 or 93.
there is a tech bulliten on them.
luckily here in the salt pond most all the antiques have disappeared.

[Rathpr_boater]

Thanks for the info. I have never had to replace the 1/4-inch oil hoses. It looks like a replacement part. Can you buy this stuff by the foot somewhere? Thanks.

[rodbolt17]

you can buy the oil line when your at the dealership getting them to research antique tech bullitens.
there are some special instructions and a particular order the lines attach.
the kien pump had the oil line check valves built into the pump.
the mikuni uses inline check valves.