Step Activity
2 Insert the starting key all the way and turn to position "I".
Depending on the model, the following indicators light up:
▪ Charge control (10)
▪ Oil pressure display (9)
▪ Pre glow display (6)
NOTE: If the optional engine temperature display (8) lights up,
the coolant temperature is impermissibly high. Do not start the
engine; eliminate the cause.
When the optional pre glow display (6) goes out, continue with
step 3.
3 Leave the starting key at position "I" until you hear the fuel feed
pump switches off (approx. 30 seconds).
4 Turn the starting key to position "II". The start procedure takes
longer than normal as air is still in the fuel system.
5 As soon as the engine is running, release the starting key.
▪ The starting key springs back to position "I" and remains in
this position during operation.
▪ The charge control (10) and oil pressure display (9) go out.
▪ The operating display (11) lights up.
NOTE: There is air in the fuel system when starting the engine
for the first time/after a filter change. The engine therefore starts
in the emergency program (reduced power and speed).
6 Run the engine for approx. 2 minutes in the emergency program
to make sure there is no more air in the fuel system.
7 Switch off the engine and leave it switched off for at least 2 mi-
nutes. At the next start the engine again runs in the normal pro-
gram.
NOTICE
▪ In case of irregularities, switch off the engine immediately.
▪ Identify the fault and eliminate it.
▪ For details of troubleshooting, see the chapter 9.1 Fault ta-
ble, page 86.
Operation and use 4H50TIC
44 Operator's Manual
HATZ
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