ruscomredneck
New member
I have a rider with a 16 hp Briggs(model 402707,type 1212). It appears to be running only on one cylinder.I put in new plugs.If I disconnect the plug wires & remove one at a time while the engine is running one side will make the engine stall, the other side has no effect.The side with no effect has spark at the wire.Is there a way of testing the magneto to isolate the problem before throwing a bunch of parts into it.Any other tests I should be trying? Thanks in advance for any advice!!