Vacuflush model on 4788

[gwexco]

I have looked all through the forum and can't find what model of Vacuflush is used on a 1999 Bayliner 4788. The label on the unit behind the glass panels doesn't give model number but does give s/n 01142680. Can't cross reference that anywhere. The unit aft of the guest head doesn't have any info showing. Can someone definitively say which models are used (assumed the same) so I can order some repair kits. Don't want to order the 2" and find out I needed the 1.5" duckbill valves.
On another note has anyone installed the 'whisper quiet' upgrade? I don't know if this was done to mine but it sure could be quieter!
Thanks.

[brad4550]

I'am sure you have 1 1/2 however call "MARINE SANITATION" in Seattle yes I know out of state but there extremely knowledgeable.1-800-624-9111

[higgins_jr]

Graeme, take off the plastic base collar…. The model number will be on a label sticker on the base..

Cheers

[Timicrinn]

My 1994 4788 has model 1006... which takes an 1 1/2 duckbill

[ksanders]

I installed the motor upgrade a few years ago and it quieted them down quite a bit.

[Jmason]

Kevin
Interested in that motor upgrade can you post info.
Concern: how do you know when it’s cycling because a guest soft peddled? Can you hear it?
1990 4588
Port Hueneme Ca

[talman]

the model on the base of the head does not translate to which vacuum generator you have. The vacuum generator is pretty plainly marked. Get that.

[ksanders]

Kevin
Interested in that motor upgrade can you post info.
Concern: how do you know when it’s cycling because a guest soft peddled? Can you hear it?
1990 4588
Port Hueneme Ca

you can still hear it, but is is very noticeably quieter.

[Timicrinn]

Motor Upgrate...to what exactly...ya got me curious to what you have on LISAS WAY?

[ksanders]

Motor Upgrate...to what exactly...ya got me curious to what you have on LISAS WAY?

We have two vacuflush units circa 2001

I wanted to proactively maintain the units and saw tyhat they offered a "quiet motor" upgrade kit and that was what we used, along with new bellows and duckbills. That was probably three years ago.

[MerlinV]

We had a motor fail in one of our vacuum generators about three years ago. At the time I just ordered a motor, and was pleasantly surprised when this new ‘quiet motor’ turned up.

In our case, the two vacuum generators are alongside each other, and perhaps it’s age, but they sound exactly the same to me.