Home › Forum › Ask A Member › Mariner/Yamaha help › Re: Mariner/Yamaha help
Yamaha oil injection is fairly bullet proof, so in my world, disabling it just isn’t done. If it were my motor, I would get an oil tank off eBay and put it back together right. (Why is it missing?) That being said, if your oil pump is still on the motor, you can remove the oil pump, remove the worm shaft and reinstall the pump as a block off. See diagram link, below, reference #1.
http://www.marineengine.com/parts/marin … l/oil-pump
Here’s a link to a tank on eBay, for $35 with free shipping. This is an actual Mariner part but you can search Yamaha 40, too. Just make sure that you note the tank shape, as Yamaha has different shapes for different years.
http://www.ebay.com/itm/Mariner-40-HP-O … -Z&vxp=mtr
Long live American manufacturing!