Panasonic SA-VK880PU Service Manual page 71

Step 4 Install the Thrust Spring.
Step 5 Install the Winding Lever.
Caution 1: Ensure that the Winding Arm Ass'y is pulled
towards to the right as arrow shown to enable full insertion
of the Winding Lever. The Winding Lever must be seated
on the Main Gear as diagram shown.
Caution 2: Ensure that the Winding Lever is firmly inserted
and properly catched on the tape side as diagram shown.
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