Patrick,
been flying my eagle for something over 150 flights and have learned how to replace motors about every 50 flights. It is a speed 300, available at many hobby shops or mail order. The clutch can be removed as it is simply pressed on. I have replaced all but one myself. To remove the clutch start by removing the motor from the mount. Next, remove the small aluminum piece from the rear of the motor. Be careful as you remove it as it has a small ball bearing to take the thrust loads, pressing against the armature shaft. Then wedge the clutch off the old motor by prying between the backside of the clutch and the bum motor. You will finish destroying the motor, but its junk anyhow. Now the tricky part, press the clutch on to the new motor. I use a vise to control the press. You have to push against the rear of the armature shaft were it extends out the back of the motor, NOT THE MOTOR CASE. On the clutch I use a small spacer so I am pushing against the steel core of the clutch, DO NOT PUSH AGAINST THE CLUTCH SLEEVE. Squeeze the assembly together to the desired depth, then stop. Match the depth of your original motor. Now your ready to remove the leads from that bum motor and solder them on to the new motor.
I did find an issue that was hard on my motors, the Kysho connectors that came on my motor and ECU were loose fitting causing excessive power losses. I have switched to deans connectors and my motor life appears to be significently improved.
Hope this helps in the future.

Jim Hiller