Hitachi ZAXIS 120-3 class Operator's Manual page 239

Table of Contents

Air Bleeding by Priming Pump

In case air is not bled due to malfunction of the fuel sole-

noid pump, operating the priming pump only can bleed air.

1. Check that fuel cock (3) on the bottom of the fuel tank is

2. Loosen air bleed plug (1) on the fuel main filter.

3. Supply fuel by reciprocating priming pump (6). After no

air bubbles are spouted through air bleed plug (1), tight-

en air bleed plug (1).

4. After tightening air bleed plug (1), reciprocate priming

pump (6) approx. 150 strokes.

5. Wipe off any spilled fuel.

6. Start the engine. Check that no fuel leaks are present. If

the engine does not start, repeat the above procedures

from step 1.

Wrench size: 10 mm

Air Bleeding by Cranking

Bleed air from the fuel system after changing the common

Bleeding Procedures

1. Bleed air until the engine supply pump entrance enough

according to the above-mentioned procedures.

2. Operate starter motor for long cranking within 20 sec-

onds. If engine falls to start, return key switch to OFF. Wait

more than about 60 seconds, then try again.