1B20, 1B27, 1B30, 1B40, 1B50 Operation and use
HATZ
41Operator's Manual
Overview – Fuel shut-off valve (option)
1 Fuel shut-off valve
Description of functions
When the starting key is moved to position I the fuel shut-off valve (1) is
electrically unlocked. The fuel supply to the injection pump is enabled, the
engine is ready to start. When the engine is running, turning the starting key
to position 0 locks the fuel shut-off valve and thereby blocks the fuel supply
to the injection pump, the engine switches off.
This fuel shut-off valve is also used in association with the electrical auto-
matic shutoff. When faults occur the automatic shutoff switches off the en-
gine. For troubleshooting details, see chapter 9.1 Troubleshooting, page
86.
In special situations an emergency start can also be attempted (see chap-
ter 9.2 Emergency start, page 91).
Procedure – Starting the engine with a starter
NOTICE
▪ Start for max. 30 seconds. If the engine is still not running
after that, turn the starting key back to position "0" and elimi-
nate the cause (see chapter 9.1 Troubleshooting, page
86).
▪ Turn the starting key to position "0" every time you want to
start the engine.
▪ The anti repeat device in the ignition lock makes it impossi-
ble for the starter to engage while the engine is running and
become damaged.
Step Activity
1 Check the speed adjustment (see chapter 7.3 Setting the speed
control, page 36).
2 Remove the protective cap (1) from the ignition lock.
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