MAINTENANCE Pump Clappet Valves
1. Disconnect spark plug cap from
the spark plug, refer to page 38.
2. Turn the fuel valve lever to the
off positon, refer to page 11.
3. Flush pump chamber, refer to
page 43.
4. Lift suction side of pump and
allow all water to drain out the
discharge fitting.
5. Use a 19 mm wrench and remove the nuts and flat washers from
both the suction and discharge ports,
6. Remove both ports.
7. The clappet valves are directional, so when removing the valves
note of the water flow direction.
CLAPPETVALVE n
(discharge side)
NUTW-+a, \F FLAT / f
WASHER(4) -~ - ’
8. Inspect ports, case sealing surfaces, and clappets for damage. If
clappets are worn, torn or damaged, replace them. If the case
sealing surface is damaged and cannot be cleaned, an optional
wear plate is available from your Honda water pump dealer.
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