Well it had to come,

So we had a group of local kids and adults come to the field for a fun day of learning R/C flying. They are from a Farm group and were very interested. Well My plane was used for letting kids try it out. Well one thing led to another and the instructor got disoriented and didnt recover from a dive. So needless to say, the plane drove into the ground. Well now Im left with the motor needing help. What should I do?

The carb is packed with dirt. What should I soak it in?