Hatz 1B20 - The engine loses power and speed; Engine becomes very hot. Indicator lamp for engine temperature (option) lights up

1B20, 1B30, 1B40, 1B50 Faults
HATZ
91Manual
The engine loses power and speed
Possible causes Remedy Chapter
The speed adjustment
lever does not stay in
the desired position.
Block the speed adjustment.
The fuel supply is impaired:
▪ The tank ran out of
fuel during operation.
Add fuel. 7.7 Refueling,
page 51
▪ Fuel filter is clogged. Change the fuel filter. 8.2.11 Changing
the fuel filter,
page 79
▪ Inadequate tank
venting.
Ensure that the tank is suffi-
ciently vented.
▪ Air in the fuel sys-
tem.
Check the fuel system for air
ingress.
Check the bleed valve.
The engine loses power and speed, and black smoke emerges from the ex-
haust
Possible causes Remedy Chapter
Dirty air filter unit. Check the degree of dirt con-
tamination of the air filter, and
clean or renew it if necessary.
8.2.12 Maintain-
ing the dry air fil-
ter, page 84
Tappet clearance not
OK.
Adjust the tappet clearance. 8.2.6 Check and
set the tappet
clearance, page
66
Injection nozzle not
OK.
Contact Hatz Service.
Engine becomes very hot. Indicator lamp for engine temperature (option)
lights up
Possible causes Remedy Chapter
Too much engine oil in
the engine.
Drain the engine oil to the up-
per mark of the dipstick.
7.6 Check the oil
level, page 48
Inadequate cooling:
▪ Contamination in the
entire area of the
cooling air guides.
Clean the cooling air area. 8.2.8 Clean the
cooling air area,
page 71