Subaru Robin PKX201 - Manual (Page 73)

Semi Trash Pumps - PKX Service
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49. There is a correct way, and a wrong to install the inlet
gasket. Make sure that the gasket does not have
casting marks facing outward.
50. This picture shows correct way to install gasket. Make
sure gasket is fl at against the outer housing when
reinstalling cover. Align holes and thread the three
bolts into the nozzle and cover.
51. After reinstalling bolts, torque to the specifi ed torque
value. Note: the gasket tab that sticks upward showing
correct placement of gasket.
52. Pull the engine over with rope start to make sure
there is no binding of pump components. Then fi ll
with gas, oil, and prime water. Place vacuum tester
over intake opening and check inches of vacuum.
The needle should rise to 20 to 25 inches of
vacuum within a few seconds. If not, check for volute
to impeller clearance or gasket in pump components
that might not be seated correctly.