Very good information with clear drawings. Thanks!
Text excerpt from page 15 (click to view)
Removing the flywheel (See Fig. 7 and 8)
1. Remove the head amplifier & mechanism control P.C. board. 2. Remove the main motor assembly. 3. After turning over the cassette mechanism, remove the two slit washers 1 and fixing the capstan shafts R and L, and pull out the flywheel R and L respectively from behind the cassette mechanism.
Flywheel R Flywheel L
Capstan shaft R
Capstan shaft L
Slit washer 1 Flywheel R Flywheel L
Slit washer 1
Removing the reel pulse P.C. board and solenoid (See Fig. 9)
1. Remove the five pawls a to e reattaining the reel pulse board. 2. From the surface of the reel pulse board parts, remove the two pawls f and g retaining the solenoid.
a b c d e