Subaru Robin PKX201 - Manual (Page 43)

Trash Pumps - PKX Service
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1. Drain any water from the reservoir by loosening
the drain plug. Loosen the 4 knobs that hold the
outer pump housing to the back plate of the pump.
Use the special wrench provided with pump.
2. Push the 4 knobs to the side and remove the outer
pump housing from the pump back plate.
3. Inspect the volute and outer case for cracks and
bent castings. Also inspect wear plate any uneven
wear marks. For removal of volute and wear plate
from outer pump housing see steps 34 to 48 .
4. Remove plug on back plate housing for access
to impeller. Use a soft rod such as aluminum or
brass, and a hammer to loosen the impeller. Hit
counter-clockwise until loose.