3H50, 4H50
Maintenance
HATZ
75
Manual
Symbol
Maintenance in-
terval
Maintenance step/check
Section
Every 8–15 oper-
ating hours or ev-
ery day before
starting
Check the oil level.
7.5 Check the oil
level, page 66
Check the intake area of the
combustion air.
8.2.3 Checking
the intake area of
the combustion
air, page 80
Check the radiator fins for dirt
accumulation.
8.2.4 Checking
the radiator fins
for dirt accumula-
tion, page 82
Check the cooling system
8.2.5 Checking
the cooling sys-
tem, page 83
500h
Every 500 operat-
ing hours or every
2 years
Change the engine oil and oil
filter
1)
8.2.6 Changing
the engine oil and
oil filter, page 86
Change the fuel prefilter
1)
Replace the fuel main filter
1)
Check the poly v belt
1)
Change the oil separator of the
crankcase ventilation
1)
of the crankcase
ventilation, page
Check the screw connections
1)
8.2.11 Checking
the screw con-
nections, page
104
Clean the engine
1)
Every 500 operat-
ing hours or when
indicated, at least
every 2 years
Change the air filter cartridge
(primary filter)
2)
