push-start

US /ˈpʊʃ.stɑːrt/
UK /ˈpʊʃ.stɑːrt/
"push-start" picture
1.

to start an engine, especially of a vehicle, by pushing the vehicle to get it moving and then engaging the clutch to turn the engine over

:
We had to push-start the car because the battery was dead.
Can you help me push-start my motorcycle?
1.

the act of starting an engine by pushing the vehicle

:
The car needed a push-start to get going.
A quick push-start got the old truck running again.