. OPERATION DETAILED CONTROLS AND GAUGES OPERATION DETAILED CONTROLS AND GAUGES NOTICE glass may break. Check before applying the lock. 3 - 31 1) set the protru ding par t of grip (A) on the inside, and insert b etween the lef t switch lever b ox and mag azine box o n the in side left of the operator's cab 2) After i nserting e rubber and re ar frame rubbe r (A), push t he bottom window against lock b ase (C). If the window ris e up on l ock bas e (C) or is not in contact w ith lock lever (B), and i t is attemp ted to e ngage th e lock by fo rce, there is danger that the 3) Set lo ck lever (B) to t he LOCK ( CLOSED) positio