You need the JIS (Japanese cross head) screw driver for Shimano gears.
https://www.motorcycle.com/ask-mo-anything/difference-between-japanese-jis-phillips.html?amp
Hozan if possible
@davidual started
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You need the JIS (Japanese cross head) screw driver for Shimano gears.
https://www.motorcycle.com/ask-mo-anything/difference-between-japanese-jis-phillips.html?amp