I'm looking for a gear shift handle for a Wizard WJ-7 motor. Can you use any handle or does it have to be one made for this motor? Also I would be interested in a manual for this motor if anyone can tell me where I can locate one. Looked on ebay but none available. Any suggested would be appreciated.

WJ7 is a Mercury Mark 20 powerhead with a Mercury
KG7 lower unit. (this site has a Wizard-Mercury comparison list for all Mercury made Wizards models)
Mercury Parts Manual for KG7 shows a non-shifting lower unit.
Why do you believe you need a shift handle?
Louis