You should hopefully have a fire extinguisher and hope you can put it out.
Get your fire extinguisher and try to put the fire out.
yes
yes
shut off the engine
cut of fuel supply
shut off the engine
Switch off the motor and smother the flames with a fire extinguisher.
yes
yes
You have to first, shut off the enging, then use an extinguisher to put it out.
If the motor on your boat catches fire, immediately cut off the fuel supply to prevent further flames. Use a fire extinguisher rated for marine use to extinguish the fire, aiming at the base of the flames. If the fire cannot be controlled, evacuate everyone from the boat and call for emergency assistance. Always prioritize safety and wear a life jacket if necessary.
You have to first, shut off the enging, then use an extinguisher to put it out.