Won't start. Mower was in storage and unused for 2 yrs. Replaced spark plug. Still won't start.

hey john bruce . what type of mower . there could be many reason . there blade clutch there a cable you have to hold down to start the mower could be causing it not to turn or the engine could be seized if so remove the oil ffrom the mower remove the spark plug tie spark plug wire away from any metal . get some :PBblast or trans fliud pour a cap ful down the spark plug hole leave the mower ( if small one vertical for1-2 days if there a blade clutch tie up with shoe lace to handle remove blade or use chnk of wood and big hammer hit the wood to see it blade will move if does try again the allow fliud in spark pug hole to loosen the blind ( understand when that blde may loosen and the mower may run it will smoke badly do not run on fast and after it run and hopefully loosen up change oil and good luck . i been in the lawn maintenance and repair for 43 yrs . if it work you may get a shorter life out of the mower of maybe not bruce

Coupe, sedan, convertible, wagon, engine size? Also, do not use dielectric grease in computer connectors as this can cause a feedback issue transmitterd by the grease. Use white lithium only.

probably need to clean out carby and fuel tank

Electronic ignition units work off speed of rotation so make sure yoy are cranking the engine fast enough, make sure the plug is well earthed against the cylinder whilst cranking, make sure the switch is in the on position, if there is still no spark you will have to replace the unit.

try running it with the gas cap loose the vent might be plugged

try priming it mite work lol

You need to pull the spark plug out, connect the spark plug wire and ground the plug to the motor and see if you have spark. If you have spark (bright blue) then it is a fuel problem. A yellow spark is and indicator of a coil issue.

I am strictly Briggs&Stratton. They are hard to start when the fuel tank is half empty. Clean the plug and air filter.

first things first:
1) make sure that the kill for the magneto/coil is breaking contact( it is on the side of the mower,follow the cable down from the red bar)
2) gas to carburetor
3) spark to plug/s
4) gas to cylinder/s

pull plug and try starting mower, observe spark plug for spark and fuel coming out of cylinder/s. if spark no gas, then check to see if it getting to the carburetor, if it is then it is the float and seat in the carburetor and will need to be cleaned/replaced/rebuilt. Or just simple pour gas into the carburetor and try starting if it starts then it is the fuel line, carburetor. Hope this helped Tim

IF you are turning it over and getting spark then your not getting fuel
2 year old gas can turn to sludge plugging the filter in the gas tank clean the tank out - blow the fuel line from the carb. back to the tank- use fresh gas she should run