i have a 15.5 hp briggs that i swapped onto my mower, its very hard to start just keeps poping out of carb and exhaust then after a bunch of cranks it will run no problem. not sure whats causing this the engine ran fine before i swapped over i believe i have all the wiring correct. has strong spark good compression seems to be getting fuel good. to my knowledge the valves have never been adjusted
For correct valve clearance and detailed procedure for setting them, contact me at address below, put in proper format and remind me model number and what you want. Note that .005" is the upper end for Intake valve which is the valve involved in compression release and puts it too close to rendering compression release inoperable. I think you may have other problems but try setting valves first.
No it's not a new plug I will probably change it next it does have strong spark. I have also gone through the carb twice it's clean fuel filter is also clean, I bypassed the anti backfire solenoid put a fuel shut off on and deleted all the safety switches it's just the basic wiring. I have noticed the battery does not charge i tested to see if it's charging and it doesnt I don't think that would effect how it starts though I use a booster pack. Yes my name's also pronounced Tbow.
