Mantis tiller will not start. Cannot get primer bulb to draw fuel.I replaced all of the lines,primer bulb still won't work. Tiller will start by priming cylinder by removing spark plug. Help?

Troubleshooting:

Airlock in the fuel system: If the fuel bulb is not primed correctly, it can cause an airlock in the fuel system, which can prevent the engine from starting. Try priming the fuel bulb again and see if it helps.

Clogged carburetor: A clogged carburetor can also prevent the engine from starting. You can try cleaning the carburetor with a carburetor cleaner.

Faulty spark plug: A faulty spark plug can also cause starting problems. Check the spark plug and replace it if necessary.

Fuel quality: Poor quality fuel can also cause starting problems. Make sure you are using fresh, clean fuel.

You can also check out some helpful videos on YouTube that provide step-by-step instructions on how to troubleshoot and fix a Mantis tiller that won't start.

Mantis Tiller won't start, maybe this is why??? - YouTube

Fixing a Mantis Tiller that will not start - Springtime Start-up Techniques - YouTube

Top Reasons Tiller Engine Won't Start - Tiller Troubleshooting - YouTube

if the primer bulb cannot pick up fuel and the fuel lines are good then you have a bad primer plate and you need a new carb

check the fuel lines for a breakage or the primer bulb for a crack. Sounds like it is sucking air instead of fuel

If you need further help, I’m available over the phone at https://www.6ya.com/expert/kelly_69a0cf1b13789df1

Check valve in primer body stuck with debris, cannot clean, buy replacement

Check your carburetor float

if the primer bulb isn't filling up with gas when you push it the the diphram in the carb. behind bulb is bad needs to be replaced then it should work unless fuel lines are crossed or has holes in them

did it also run out of oil, because it seized like it did you might of burnt the engine

replace primer bulb. If that's not the problem check the float in the carb for pin holes . check fuel lines and intake line

the fuel line may be clogged or is collapsed go to a car or a home improvement store go to lawn and garden and get a 3-4 mm gas line

check the fuek lines for hole and leaks, check the fuel filter and clean if necessary. remove the carbuerator and inspect the gasket; it should be soft and flexible, if it seems hard or brittle replace it. clean the carb with carb cleaner sray (available at any local auto parts store) and compressed air. make sure you get inside the small fuel rail holes. check the primer bulb for pin holes and seating/sealed properly. if that doesn't work have the carb repaired at a service center or replaced.