Wont start gets spark but just sputters, hasn't been ridden in about 4 months

Best bet would be to empty the fuel left in it then buy some fuel stabilizer and refill fill the tank with good gas also check the battery and fuses.

What shape are the spark plugs in?

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

there are sooooo many things that can cause a car not to start, it would probably be best to get a shop to diagnose/work on it unless you can give a better discription. sputtering, starter sounds like its not getting quite enough, any other symptoms would give us a better chance of helping.

check the firing order
you could be 180 degrees out

the batteries may need replacing after standing for that period of time (depending how old they are ) you could try charging them to see if they will hold a charge, before you get that side of things sorted out you wont know if the engine will start or not,if it doesn't you will have to check other issues that may be a problem,fuel & filters,spark & spark plugs ........hope this helps......cheers.

Chances are there is a water build up in the carb float bowls. The water comes from condensation in the gas tank. Try draining the carbs. Another possibility is carburetor main jets partially plugged up. You must clean the carbs if plugged jets are found to be the problem. Please rate my answer. Thanks.

Check the spark plugs for the proper gap (0.044 in) and if the ignition wires are old they might need to be replaced.

you probably have a stuck step on brake on the back wheels which will disable the unit

Luck

Deane

Clean the air filter if you have not done it yet. Get a spray can of starting fluid and spray into the filter. You did check the plugs for spark didn't you? If no spark, check the sidestand kill switch as well as the handlebar kill switch.

Assuming you are using fresh gas. Check to see if gas is coming out of the line, if not blow back up into the tank and if that works there's dirt in the tank. Check the spark by removing the plug and kicking it over with the plug touching the engine, look for spark. If no spark, try a new plug, if still no spark, you have a stator problem. It wouldn't hurt to clean the air filter in any case. Good luck!