OPERATION MACHINE OPERATIONS AND CONTROLS Warming-Up Operation NOTICE The most suitable temperature for the hydraulic oil is 50є — 80єC. If it is necessary to operate the machine when the oil is at low temperature, the temperature must be raised to at least 20єC before starting work in order to extend the life of the machine. Do not operate the levers suddenly when the hydraulic oil temperature is below 20єC. After starting the engine, do not accelerate the engine suddenly until the warming-up operation is completed. In particular, if the engine is accelerated suddenly in very cold weather, white smoke may come out, but this does not indicate any abnormality.
Do not run the engine at low idling or high idling con- tinuously for more than 20 minutes. If it is necessary to continue to run the engine at idling, apply a load from time to time or run the engine at a mid- range speed. After starting the engine, do not immediately start operations. First, carry out the following operations and checks. 1. Turn fuel control dial (1) to the center position between LOW IDLING and HIGH IDLING and run the engine at medium speed for about 5 minutes with no load. 2. Set safety lock lever (2) to the FREE position, and raise the bucket from the ground. 3.
Operate bucket control lever (3) and arm control lever (4) slowly to move the bucket cylinder and arm cylinder to the end of the stroke. NOTICE When the work equipment is retracted, take care that it does not interfere with the machine body or ground. 3-51