Hitachi ZAXIS 120-6 class Operator's Manual page 308

E. Fuel System
1. Drain Fuel Tank Sump
2. Drain Fuel Pre-Filter
3. Replace Fuel Main Filter Element
4. Replace Fuel Pre-Filter Element
5. Check Fuel Hoses
F. Air Cleaner
1. Air Cleaner Outer Element
2. Air Cleaner Inner Element
Parts
for leaks, cracks
for cracks, bend, etc.
Parts
Clean
Replace
Replace
MAINTENANCE
Quantity
1
1
1
1
−
−
Quantity
8
1 (or when indicator lit)
1
1
7-14
Interval (hours)
8 50 100 250
(or when indicator lit)
(or when indicator lit)
Interval (hours)
50 100 250 500
After cleaning 6 times or 1 year
When outer element is replaced
Page
500 1000 2000
7-80
7-81
7-84
7-86
7-88
7-88
Page
1000 2000
7-89
7-89
7-91