Wont start what is spark plug gap whatelse bulb full,new,gas in it,lines hooked

I need to ask. Did you leave fuel mix in it for a long time? If so then the carburetor will need to be cleaned with a special cleaner. and not the spray can stuff.

try running on full choke until it warms up.

They make a handy dandy tool for that. If you are going to work on/with small engines, it's a good investment.
This one is similar to the one I use -


Small Engine Tool for Briggs Stratton Kohler Tecumseh Spark Tester eBay

Start by spraying some starter fluid into the carburator. If it starts and dies after few seconds then you most likely have a fuel problem.

Press the primer bulb about 6 times. There should be gasoline flowing through both gas lines the intake and overflow. If not check that the filter ( attached to the end of the intake line ) inside the gas tank is not plugged. It can be removed for testing purposes. Rplacement gas lines and filters are available in places like Sears, Home Depot, Lowes etc.

If the unit does not start with the starting fluid you may have an ignition problem.
Remove and clean the spark plug. Attach the spark plug wire to the plug and hold the threaded part of the plug againt the metal head of the engine. While closely wathing the gap have someone pull the rope and turn the engine over. You should see a small spark jump the gap of the plug.
If not start by replacing the plug ( cheapest, easiest first).
If the unit has gas andspark nd still does not start remove the carburator and disassemble it.
Soak the body in fresh gas for about 10 minutes and blow out the port with small engine carb cleaner ( also avail at the prementioned stores).
Those small carbs don't take much to become clogged.

Test the spark plug (gapped at 0.020") for blue, snappy spark. If weak or nothing, remove the left side cover to expose the flywheel and ignition module. Turn the flywheel until the magnets are under the poles of the module, insert a thin business card into the pole gaps, loosen the module screws to allow the module to contact the magnets. Tighten the screws and turn the flywheel somewhat to release the card, then turn the flywheel one full turn to make sure the gaps don't close up. Remove the ignition switch wire from the module body, and try for spark again. If nothing, replace the module using the above procedure. If you did get spark, replace the ignition switch wire and try again--if nothing now, look for a short circuit to ground in the wire or the ignition switch. If you got a good spark in the first test, pour a little fuel mix into the plug hole and try for start--if pops several times, you have fuel delivery problems. Check the fuel filter, air cleaner, and muffler for plugging. Check the fuel lines for decay or other damage. Make sure the primer bulb fills with fuel when pumped several times. Does the engine seem to have good compression? Hope some of this helps!

Check the fuel filter, air cleaner and muffler for plugging. Be sure the fuel and oil mix is thoroughly shaken just before filling the tank each time to prevent oil starvation. Set the plug gap to 0.020" and test the spark for being blue and snappy. If weak looking, remove the left side engine cover to expose the flywheel and ignition module. Turn the flywheel so that the magnets are just under the module poles, insert a thin business card into the gaps, loosen the module screws to allow the poles to contact the magnets. Tighten the screws, turn the flywheel somewhat to remove the card, then turn the flywheel one full turn to make sure the gaps don't close up further. Replace the cover and retest spark--if ok, try for start. Hope this helps!

Check the fuel filter, air cleaner, and muffler for plugging. Check the condition of all fuel lines. Does the primer bulb fill with fuel when pumped several times? Check the spark at the plug (gapped at 0.020") which should be blue and snappy. If weak looking, you may need to reset the ignition module gap to the flywheel magnets with a thin business card for a gauge. Remove the left side case to expose the flywheel and ignition module. Turn the flywheel to bring the magnets under the ignition module, insert the card into the pole gaps, loosen the module screws to allow the module to contact the magnets, then re-tighten the screws. Turn the flywheel one full turn and watch the gaps to make sure the flywheel doesn't contact the module. Recheck for spark. Hope this helps!

Did you check for blue, snappy spark at the plug (gapped at 0.020") when you replaced it? If ok, put some fuel mix into the plug hole and try for start--it should pop several times. If ok, check the fuel filter, air filter, and muffler for plugging. Check the fuel lines for any decay or other damage. Make sure the carburetor fasteners are tight. Does the primer bulb pull fuel into itself after several pumps? If nothing, remove the fuel line from the carburetor that has the filter inside the tank and place it on the primer port that has the line coming from the carburetor. Try to pump fuel again--if successful, then remove the carburetor from the engine and clean it inside and out with spray carburetor cleaner. Check the lower chamber diaphragm for flexibility and no cracks or holes. There is also a small mid-body filter that can easily plug with stale fuel mix. Hope some of this helps!

remove all of the old fuel using a siphon bulb and hose. Put in brand new fuel and make sure the line from the tank to the carb. is flowing gas. if not clean or replace the fuel line

the air gap should be .012", the gap you have it set at is to small.reset the gap and try it again.......hope this helps,let me know........