Installing The Batteries And O-Ring - Furuno TS-331A Operator's Manual

6. CATCH SENSOR OPERATION
6.6

Installing the Batteries and O-ring

The catch sensor is powered by three "D" alkaline batteries and battery life is
about 1,000 hours. When the battery voltage is low, the appropriate (yellow)
"active indicator" on the catch status indicator does not appear. When this occurs,
replace the batteries. It is also recommended to replace the O-ring whenever the
batteries are replaced. Replacement of the O-ring is not necessary if batteries
are being installed for the first time.
Necessary tools and parts
• Socket wrench w/19 mm or 3/4-inch socket head
• Slotted-head screwdriver
• Three "D" alkaline batteries (International Standard Number R20)
• O-ring (Parts no. 834-625-024)
• Silicone grease (non-zinc type)
1. Use the socket wrench and socket head to unfasten the nut fixing the trigger
bolt. Remove the trigger bolt together with the trigger magnet housing. Clean
the trigger bolt with freshwater.
Transducer end
2. Use the slotted-head screwdriver to remove the circlip at the battery cap end
of the catch sensor.
44
Nut
Trigger Bolt
Catch sensor
Catch sensor, battery cap end
Battery Cap
end
Polyurethane
Housing
Circlip
Trigger Bolt
Trigger Magnet
Housing
TRIGGER BOLT