SEACHOICE 15421 27 Inch Fuel Level Sender Instruction Manual

SEACHOICE 15421 27 Inch Fuel Level Sender

6″ to 27″
FUEL LEVEL SENDER

FOR MODEL 15421

WARNING NOTE : If uncertain how to perform any of the following procedures, or if you are unsure of any electrical wiring connections, seek the services of a qualified individual.

DANGER GASOLINE IS EXTREMELY FLAMMABLE. KEEP SPARKS AND FLAME AWAY FROM TANK AREA. PURGE TANK OF FUEL AND FUMES BEFORE PROCEEDING READ THESE INSTRUCTIONS THOROUGHLY BEFORE PROCEEDING WITH INSTALLATION.

PREPARATION FOR INSTALLATION

1. If tank is equipped with a sender, remove it and note float arm position. Note that the screw hole patterns in the mounting plate and the top of the tank are hot symmetrical. This allows repositioning of the float arm relative to the mounting holes every 90°
2. If rotation of the sending unit is necessay for your installation, loosen 1/8″ brass nut at top of sending unit enough so the mounting plate can be raised approximately 1/8″ (3mm) to clear the square.
3. Rotate the sending unit and brass screw assembly in 90° increments to insure clearance of the float arm with the tank or baffle wall.
4. Torque brass nut to 15 in. Ib. (1.7 Nm) using torque wrench. Figure 1

ADJUSTING FLOAT ARM LENGTH

1. Determine tank depth by measuring from inside bottom to outside top of tank, minus 1/2″. Refer to Figure 2.
2. Assemble float arm to sending unit with float arm clamp. Refer to Figue 3.
3. Measure from underside of mounting plate to bottom of float. Adjust float arm clamp to desired tank depth, mark and cut excess rod length. Figure 3

SENDING UNIT INSTALLATION INTO THE TANK

1. Carefully slide gasket over float arm and sending unit to fit flat against underside of mounting plate. Install completed unit into tank by carefully inserting float arm and then sender through the tank hole. A void bending float arm, as this may cause the sending unit to give improper readings. Make sure the gasket aligns properly with the mounting plate and the tank. The five hole screw patter will only fit one way, as shown in Figure 4.
2. Screws should be tightened with a screwdriver just until the white sealant beneath the screw head becomes Figure 5 visible. Do not overtighten, as this will elongate the gasket and weaken the seal. To ensure that there are no leaks, a leak test of this area should be performed: First pressurize the tank to 3 PSI. Then check for bubbles using a soapy water solution (see Fugue 5). NOTE: All fuel system components and connections should be checked for leakage. If you are unsure of how to perform a leak test, consult a professional.
3. Using No. 18 wire and ring terminal, run a lead from screw on the top of sender to”S” terminal of fuel gauge (not included with this kit).

CAUTION Sending unit must be grounded Using No. 16 Wire and 1/4 push-on terminal. run a lead from the terminal on the mounting plate to electrical system ground.

Refer to figure 6. Before reconnecting battery to electrical system, recheck wiring to ensure all connectors are properly made. incorrect connections or electrical shorts could cause damage or fire in system.
Elements of electrical system should have proper fuses installed.
AW-4790

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