Hitachi ZW 180-6 Operator's Manual page 344

Disassembling/ Assembling
1. To remove cover (1), loosen with a wrench.
After cover (1) is removed, gasket (2), strainer (3), and
gasket (4) are easily removed in order.
2. Wash strainer (3) with solvent.
3. 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
wrench.
f
NOTE: Wrench size: 17 mm
IMPORTANT:
 Only clean and replace the strainer as well as
gaskets (2) and (4) while servicing the fuel pump.
Never attempt to disassemble other parts.
 Gasket (4) can get caught in the bore of pump (5),
making it difficult to remove the gasket, but do
not disassemble the cylinder of pump (5). If the
gasket is difficult to remove, do not disassemble
other parts but stretch gasket (4) to remove it.
Use a new gasket (4) for assembling.
MAINTENANCE
1
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.
7-72
2 3 4 5
2.7 mm
3 2
M1GR-07-004
1 mm
4
M1U1-07-006
MDAA-07-053
MDAA-07-054