You will need a socket wrench «at 18».
1. Remove the crankcase protection (see «Removal and installation of mudguards and engine crankcase protection»).
2. Turn out two bolts of fastening of an arm of a back support of the power unit...
3.... and remove the bracket.
4. Turn out a bolt of fastening of a support to a stretcher...
5.... and remove the support.
6. Install the rear powertrain mount in the reverse order of removal.