Are there installation instructions specific to replacing the motor and rubber boot in the SC8BL solar powered roof-mount fan?
Here is some information for replacing the motor for the SC8BL solar powered fan.
Disconnect the solar panel wiring and loosen the three motor bracket screws and remove the six dome arm screws from the roof side to get access to the fan blade. Remove the fan blade from the motor shaft and the motor and donut should slide out from the top where the new motor and donut can go in its place. Then just reverse the process.