spark plug gap? bike not running right 550L

[epurdy2005]

I have a 1985 suzuki 550L.....Its only running on 2 cylinders. One of the cylinders is starting to fire every once in a while...What is the gap for the spark plugs supposed to be? It looks like they are both getting good spark. And the gas comes into that carb first and the other 2 cylinders are running fine. I looked around and tried to find an online manual for the bike or for the carburators but couldn't find too much. Anybody have a link to one? Thanks
Evan

[mark]

Which two cylinders?

[epurdy2005]

When your sitting on the bike the 2 right ones which i'm guessing is 3 and 4.
Thanks

[DimitriT]

<never mind>

[DimitriT]

Are the plugs in #3 and #4 clean or fouled (carbon or wet)? If they're clean then you probably have a carb problem. Your carbs are either dirty (idle jet is clogged, most likley) or out of sync. Does the bike run well when you open the throttle or does it get worse? How does it run on choke? If they are sooty you are running too rich and need to adjust the idle mixture. If they are wet you are not getting a good enough spark.