821526001 Mercruiser FILLER BLOCK

1. Disconnect the radiator hose from elbow (3).2. Remove two tube assemblies (2).3. Remove the bolts that hold elbow (3) to the water pump, and remove the elbow.4. Remove the bolts that hold elbow (1) to the water pump.5. Remove the bolts and retainers that hold elbow (1) to the tube assembly, and remove the elbow. 6. Remove the bolts and adapter assembly (4) from the front drive housing. 7. Remove O-ring seals (6) and (7) from adapter assembly (4).8. If necessary, remove bearing (5) from the adapter assembly. 9. Fasten a hoist and tooling (A) to water pump (8). Remove the bolts and the water pump from the front drive housing. The weight of the water pump is 25 kg (55 lb.).10. Remove the O-ring seal from the water pump.Install Auxiliary Water Pump
1. Put O-ring seal (1) in position on the water pump. Put clean engine oil on the O-ring seal.2. Fasten a hoist and tooling (A) to water pump (2). Put the water pump in position on the front drive housing,