3H50, 4H50 Operation and use
HATZ
61Manual
CAUTION
Danger of engine damage from low load operation.
Operating the engine at no load or at very low load for an ex-
tended period can impair the running characteristics of the en-
gine.
▪ Make sure that the engine load is at least 15%.
▪ Before switching off the engine following low load operation,
briefly operate it at a considerably higher load.
7.2 Performing tests
Before starting
Before starting the engine, several tests need to be performed to ensure the
machine is working properly.
Procedure
Step Test
1 The machine is standing securely and on a level surface.
2 The installation location is adequately ventilated.
3 There is a sufficient amount of fuel in the fuel tank (see the chap-
ter 7.6 Refueling, page 68).
4 There is a sufficient amount of engine oil in the engine housing
(see the chapter 7.5 Check the oil level, page 66).
5 There is a sufficient amount of coolant in the expansion tank
(see the chapter 8.2.5 Checking the cooling system, page 83).
6 Radiator and radiator hoses are free from leaks (see the chapter
8.2.5 Checking the cooling system, page 83).
7 No persons are located in the danger zone of the engine or ma-
chine.
8 All safety equipment is in place.
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