HATZ Diesel 4M42 - Manual (Page 98)

Type of fault Possible causes Remedy Chapter
The engine loses
power and speed. The fuel supply is
impaired
▪ The tank ran out
of fuel during op-
eration.
▪ Fuel prefilter or
fuel filter is clog-
ged.
▪ Inadequate tank
venting.
▪ Line connections
are not leak tight.
Add fuel.
Change the filter.
Ensure that the
tank is sufficiently
vented.
Check the line
screw connections
for leak tightness. 7.7 Refuel-
ing, page 50
8.2.9
Changing
the fuel pre-
filter,
page 72
8.2.14
Change the
fuel filter,
page 83
▪ The speed ad-
justment lever
does not stay in
the desired posi-
tion.
Block the speed
adjustment.
The engine loses
power and speed,
and black smoke
emerges from the
exhaust. Dirty air filter unit. Check the degree
of dirt contamina-
tion of the air filter,
and clean or renew
it if necessary. 8.2.10
Maintaining
the dry air
filter,
page 74
Tappet clearance
not OK. Adjust the tappet
clearance. 8.2.12
Check and
set the tap-
pet clear-
ance,
page 78
Injection nozzle is
not functional. Contact the Hatz
service station.
Engine becomes
very hot.
Indicator lamp for
the cylinder head
temperature (addi-
tional equipment)
lights up. Too much engine
oil in the engine. Drain the engine oil
to the upper mark
of the dipstick. 7.9 Check-
ing the oil
level and
adding oil if
necessary,
page 53
Faults 2-4L41C, 2-4M41, 2-4M41Z, 4L42C, 4M42
98 Operator's Manual HATZ