This is the second Manual I have ordered from owner-manuals, I give it five stars because it is exactly what I expected given the age of the equipment. So the contents look a bit aged and the pictures a bit grainy, it fulfills my needs and I am glad I can still get hold of them.
Text excerpt from page 12 (click to view)
HCD-EP515 SECTION 4 MECHANICAL ADJUSTMENTS
Precaution 1. Clean the following parts with a denatured alcohol-moistened swab: record/playback heads pinch rollers erase head rubber belts capstan idlers 2. Demagnetize the record/playback head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Torque Measurement
Mode FWD FWD back tension REV REV back tension FF/REW Torque meter CQ-102C Meter reading 3.04 � 6.96 mN � m (31 to 71 g � cm) (0.43 � 0.98 oz � inch) 0.20 � 0.58 mN � m (2 to 6 g � cm) (0.02 � 0.08 oz � inch) 3.04 � 6.96 mN � m (31 to 71 g � cm) (0.43 � 0.98 oz � inch) 0.20 � 0.58 mN � m (2 to 6 g � cm) (0.02 � 0.08 oz � inch) 6.97 � 14.02 mN � m (71 to 143 g � cm) (0.98 � 1.99 oz � inch) 9.8 mN � m or more (100 g � cm or more) (1.4 oz � inch or more) 9.8 mN � m or more (100 g � cm or more) (1.4 oz � inch or more)