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In the early 1980's, Merc started switching over from Tillotson carbs to Walbro.
The first Walbro carbs on the 50's were WMA 1's (circa 1981), succeeded by the WMA 3, then the WMK 8.
As many lists/parts manuals that I have sifted through both on-line and in printed form I am unable to find any reference to a Walbro WMA 6 carb at all. I don't meant can't see where it was used, I'm saying can't find any indication that the thing even existed.
Nothing on the "use" list that gives the different carbs used on a particular model (eg, the 1986 designed 90 horse that stayed in production until last year, used 31 different Walbro carb models over it's lifespan).
And despite being able to list all 31 of those models, I can find nothing, nada, zippo, on a WMA 6.
Now, obviously if you have one in your hand that says WMA 6, it was made, just no records that I can find list it.
So while the carbs are often a way to identify a motor, in this particular case, they may just add to the mystery.
Hey, Walbro is still in business. Maybe give their tech support a call (look it up on their website) and see if they have records as to what that carb was used in - worth a shot...
sent the carbs to a merc mechanic,to get a clean out,not got them back yet
Not performance wise, but they sure are easier to remove with their 'bolt on from the front' design. Love 'em.
Jeff
what do you mean jeff,if you dont mind me asking,
Two, long 5/16 bolts go through the entire carb to attach it. Slap a socket on them and--presto!--off the thing comes. No fiddling with a 1/2 inch open end to get the nuts off--IF you can get to them. And no dropping the nuts into the black void below (never to be seen again) on re-assembly.
Love 'em.
Jeff
PS: Forgot jet changing. Just remove the plug in front and there's the jet! Beautiful. THe other carbs require one to fish the jet out with a thin wire, hoping not to drop in into the black void.
Iceman, where are you located?
If you have a Belgian or an Aussie built model that could explain why we can't find your carbs. All my lists are for North American built motors...