[Kjell]

Hi
I have a 2016 cforce 550 that wont start.
It starts and runs fine for 2 sec and then it dies and wont start again. If i take out and clean and dry the spark plug it will start and shut down again. Any sugestion what the problem can be? Fuel looks ok and spark looks ok when i test it to ground.

[Kjell]

the atv has only 325 km on it so its almost as new

[NMKawierider]

If it has one check the vehicle down sensor and the kill switch as well as the #2 Aux relay.

[Kjell]

Thanks for answers
When i have spark and fuel i asume the kill switch is ok?
I dont know if ther is a down sensor or what that does?
What does the aux relay control?

[NMKawierider]

Thanks for answers
When i have spark and fuel i asume the kill switch is ok?
I dont know if ther is a down sensor or what that does?
What does the aux relay control?

If you have both spark and full fuel pressure the switch and relay are probably OK. I would now take a look ate the crank position sensor or engine speed sensor as CFM calls it.

[Kjell]

Thanks for answers
When i have spark and fuel i asume the kill switch is ok?
I dont know if ther is a down sensor or what that does?
What does the aux relay control?

If you have both spark and full fuel pressure the switch and relay are probably OK. I would now take a look ate the crank position sensor or engine speed sensor as CFM calls it.

 Thanks do you know how to test the sensor? Or do i Just have to replace with new? Is in norway and the delivery time her for new parts take forever..

[NMKawierider]

Thanks for answers
When i have spark and fuel i asume the kill switch is ok?
I dont know if ther is a down sensor or what that does?
What does the aux relay control?

If you have both spark and full fuel pressure the switch and relay are probably OK. I would now take a look ate the crank position sensor or engine speed sensor as CFM calls it.

 Thanks do you know how to test the sensor? Or do i Just have to replace with new? Is in norway and the delivery time her for new parts take forever..

You will want to pull it first and inspect that there is no trash on the tip. This I believe is the test for it: