GP1670F_1870F Operator's Manual - Furuno USA

13. INSTALLATIONT-02MSBT-03MSBSensor HolderSensorcable8 mLocknutLocknutCable8 mWasherGasketLocknutø21 mmWasherGasketø25 mm70M20Coat withsealant.ø42Mounting procedure1. Drill a hole of 21 mm in diameter inthe mounting location.2. Pass the sensor cable through thehole.3. Pass gasket, washer and locknutonto cable in that order.4. Coat the sensor flange with highquality sealant and then fasten thesensor with the locknut.(Torque: max. 59N·m)5. Launch the boat to check for waterleakage around the sensor.70M24Coat withsealant.Plate thicknesswithinø50Holder Guide25 mmMounting procedure1. Drill a hole of 25 mm in diameter in themounting location.2. Coat holder guide with high quality sealant, andpass gasket, washer and locknut onto holderguide in that order and then tighten the locknut.3. Set the sensor holder to the holder guide frominside the boat and then tighten the locknut.4. Launch the boat to check for water leakagearound the sensor.13-14