Sega 999-0886-01 - Manual (Page 38)

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8 - 3 GREASING
Never touch places other than those specified. Touching places not specified can cause electric shock
and/or short circuit.
After the replacement or adjustment of the VR, be sure to set the variable value of the VR in the test
mode’s Volume Setting.
Apply greasing to the Volume gear mesh portion every 3 months.
For spray greasing, use Grease Mate (Part No. 090-0066).