Hitachi ZAXIS 135US-5B Operator's Manual page 336

Disassembling/ Assembling
Close the cock on the bottom of the fuel tank.
To remove cover (1), loosen with a spanner. After cover (1)
is removed, gasket (2), strainer (3), and gasket (4) are easily
removed in order. Wash removed strainer (3) with light oil.
Install the strainer in the reverse order of disassembling. At
that time, install gasket (2) into cover (1) first. Then, securely
tighten cover (1) to pump (5) using a spanner.
f
NOTE: Wrench size: 17 mm
IMPORTANT:
 Only do the cleaning and replacement of the strainer
as well as the replacement of gaskets (2) and (4)
while servicing the machine. Never attempt to
disassemble other parts.
 Gasket (4) can get caught with the shaft of pump (5),
making it difficult to remove the gasket, but do not
disassemble the shaft of pump (5). If the gasket is
difficult to remove, do not disassemble other parts
but extend gasket (4) to remove it. Use new gasket
(4) for assembling.
MAINTENANCE
Magnet
36 mm
28 mm
Stretch gasket (4) to
remove.
Do not disassemble this part.
Gasket (4) is easily
removed by pulling
and stretching it.
7-62
1 2 3 4
2.7 mm
3
5
M1GR-07-004
1 mm
2 4
M1U1-07-006
MDAA-07-053
MDAA-07-054