Head Y valve mystery

[JK_Boston_Catalina310]

I've read that olive oil is better than vegetable oil. From what I've read (not tried it), pull the intake line from the pump, run some oil in it, pump wet and let it run around. Replace the intake line and run some water into it. Discharge into the water, not the holding tank. If you are going to go to all that trouble, perhaps disassembly and grease/gasket kit is the way to go?

Olive or vegetable oil will leave a residue in your tank and could cause problems with your macerator. Disassemble and grease is the better way. And don't just pump dry. Pump wet too.

 

[Tom J]

HI Guys.

Had a little incident over the weekend. I have a new 2013 Jabsco Manual Head. When I pump DRY it is really difficult to plunge (lots of resistance). It eventually goes down but with some effort. On WET there is no difficulty. Any Ideas?

Cheers
2 OLD PIRATES

Try pushing down on the little selector lever while you work the pump handle. My unit does the same thing, but pushing down on the lever seems to release the suction the pump is trying to make on the raw water intake.