How to take off the top cover on WERRA 1 Synchro Compur

How to take off the top cover on WERRA 1 Synchro Compur Here are some link's to different repair tool's: Japan Hobby Tool rubber cone: https://www.amazon.com/Japan-Vacuum-C... 18 different size rubber repair tool's: https://www.amazon.com/Sizes-Lens-Fil... Divider Caliper Wing Compass: https://www.amazon.co.uk/Divider-Cali... You can also buy this set. Lens Repair Set with pointed, flat, half flat tips: https://www.amazon.com/dp/B00QRPWCN0/... JIS cross head screw driver's: https://www.amazon.com/Moody-Tools-58... Or this set, that is the set I use: https://eustore.ifixit.com/en/Tools/D... Lens cleaning wipes (PEC-PAD): https://www.amazon.com/dp/B0161VIZZ8/...