Garmin 190-01166-02 User Manual

Depending on the hydraulic layout of your boat, alternative hydraulic installations using the compact 2.1L pump are possible:

The C1 and H1 ports are directly connected to each other internally, and the C2 port is directly connected to H2. Because these 

ports are connected internally, you can leave the plugs in the C ports and use tee fittings to connect both the helm and cylinder 

hoses to the H ports. Though you should use all four ports for an ideal installation, this type of installation will steer the boat 

correctly.
If you plan to use this alternative compact 2.1L pump installation on a larger boat with long spans of hydraulic hose, the fitting 

size you choose is important. The fittings on the C ports are SAE #6, while the fittings on the H ports are SAE #4. Therefore, for 

alternative installations on larger boats, it is best to move the plugs from the C ports to the H ports and use tee fittings to connect 

both the helm and cylinder hoses to the larger C ports as illustrated below.

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