. SAFETY SAFETY MAINTENANCE INFORMATION STOP ENGINE BEFORE CARRYING OUT MAINTENANCE 2 - 33 Stop t he machine on firm, lev el ground. Select a place where azar rocks, or f looding. Lower the work the engin Turn t he switch position. Operate the work equipmen t control lever back and f orth, l eft a nd right at the full stroke 2 t o 3 time s to elimina te the remaining internal pressure in the hydraulic circuit , and th en pus h up safety lock le ver (1) to the LOCK position (L) Put block s under t he t rack to preven t the machine from moving.