Mariner/Yamaha 4 hp Help

[doogymon]

Early 80's Long Shaft. Yamaha re-badged.

Poor idle and cuts out. Works great at mid-range and wide open.

Carb cleaned and all appears normal. I am wondering about the diaphragm.

Anyhoo I need:

1. Model number help: 6E0 309330 <---------Mariner number from motor
Any links would be appreciated.

2. Diaphragm kit part number (or am I going down wrong path?)


The corresponding Yamaha part should work I would hope. A complete carb kit would probably be a good idea too.

Incidentally, lots of folks rave about the old Tohatsu 2 strokes. How do the old Yamaha's compare?


Thanks

Cheers

JW

[boats.net]

Here is the link to parts listings Mercury Marine Mercury Mariner Parts 4A 6E0-001011 AND UP