1977 cb550 non starter

shitfan · Two Stroke Sniffer Joined: 27 Dec 2008 Karma :

just finnished asembling a 77 cb550 ,tried starting it for first time today.All i got was a flat battery after a lot of coughing .and backfireing .
I checked carbs where receving fuel ok ,by undoing each bowl screw ,all ok there.
Then checked plugs to see if all receving spark ,ok there.
So im at a loose as what to check next! Exclamation

Blue_SV650S · World Chat Champion Joined: 27 Nov 2008 Karma :

Is the spark happening at the right time??? ...

How did you set the ignition and cam timing?
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