Jonsered FR2312M Workshop Manual page 27

Repair instructions
4 Loosen the spring for belt 1 (engine belt) using a
spring hook.
7 Loosen the spring that is tensioning belt 2
(transmission belt) using a spring hook.
5 Remove the belt tensioner.
6 Pull belt 1 off the belt pulley.
8 Pull off belt 2 from the transmission, first from the
rear belt pulley and then from the front.
English – 27