The memo from Yanmar (via Mack Boring) didn't make any distinction
on type of filter. Just the porosity on the element. Perhaps it was a CYA
move to specify anything smaller than 30 uM.

Doug

"LaBomba182" wrote in message
...
Subject: Fuel transfer/polishing pump
From: "Doug Dotson"

Because small filters ahead of the lift pump stress the pump and cause
premature failure. No fun.


Not if you run a large enough (as in surface area) filter and change it
regularly. At 1 - 5 gph through a Racor 900 I don't see how you could over
stress a well built lift pump.


Capt. Bill