J
JOEL LANGDON
Upon replacing hose with Sealand Odorfree on my '99 H340 (thanks Peggy Hall for your tips!),had a friend who also did his 340 observe the holding tank inlet while I pumped the head free of antifreeze. It was 15 pumps on "drybowl" till first sight of pinkstuff, to traverse the length of the 8'x 1.5" diameter hose, with Jabsco head (replaced last year). Peggy often says boaters seldom pump enough (saving holding tank space?), so I estimate 20 (min) for good measure to void hose from head to tank, at least with the aforementioned system.