It's up to you, but I usually can fix 6v or 12V motors of any kind with a little TLC and oil. Nothing is "sealed". If they can put it together, you can take it apart. Why throw it away without trying? Start with taking those nuts off of the studs and see if cans will separate. With a little tapping and twisting and tugging. I have fixed starter motors, generators, heater fan motors, etc. That motor is no different. It will have your standard rotor/armature/commutator. stator/magnets, brushes... Probably dirty, carboned, rusty, brushes worn down, wire fell off, needs oiled. Probably several of those. Be SURE you have the horn fused!!!!!!!!!
