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Troubleshooting Teleflex Engine Trim Gauges




Technical Reference Manual




Engine Trim Systems: Evinrude/Force/Johnson/ Mariner/Mercury/OMC/ Suzuki 4-Stroke/Yamaha

  1. Senders for trim systems are not available from Teleflex. Senders must be purchased from the engine dealer.
  2. Teleflex does not furnish trim gauges for the following outboard engines: Nissan, Tohatsu, Chrysler & pre '95 Force.
  3. Make sure your engine has a trim sender. Not all engines have a trim gauge option. The sender usually has two wires - brown with white stripe (Yamaha is pink. Suzuki 4-stroke 2002 is white with yellow tracers) to gauge sender terminal, and black to ground. If the gauge seems to operate back wards from the way it should go, the wrong (not compatible) gauge is being used with the sender.
  4. The Trim Gauge can be tested by: Power the gauge by connecting a positive wire to the "I" terminal and a ground wire to the "G" terminal. Have no other wires connected to the gauge. Pointer will read full UP (all but the Johnson/ Evinrude and Suzuki 4-Stroke 2002 outboards - they will read full DOWN). Next, with the power still connected, short the sender terminal at the gauge to ground. Pointer should go to the full DOWN position (all but the Johnson/Evinrude and Suzuki 4-Stroke 2002 outboards - they will go to full UP).
  5. Teleflex has special gauges (low current draw) for Yamaha EST series stern drive engines. Other Teleflex trim gauges will damage the pre- 2001 Yamaha trim sender.



U.S./Metric Conversion Chart:







Typical Trim Sender Resistance Ranges





Engine Trim Systems: Honda Outboards

Normal gauge/sender operation: Pointer reflects engine movement within the trim and tilt ranges. At the end of "Trim" range (point where trim speed increases), the pointer will be at the third graduation, balance of travel to full "Up" position will occur during "Tilt" range.

  1. Senders for trim systems are not available from Teleflex. Senders must be purchased from the engine dealer.
  2. Make sure your engine has a trim sender. Not all engines have a trim gauge option.
  3. The Honda sender harness has three wires - yellow/blue stripe to gauge sender (S) terminal, black to ground (G) terminal, black/yellow to ignition (I) terminal.
  4. The Trim Gauge can be tested by: Power the gauge by connecting a 12 vdc positive wire to the "I" terminal and a ground wire to the "G" terminal. Have no other wires connected to the gauge. The pointer will slowly move towards the "Up" end of the scale. This will take several seconds, and the pointer should stop to the right of the last "Up" mark. Next, with the power still connected, short the sender "S" terminal at the gauge to ground. Pointer should go to the full "DOWN" position. If the gauge reacts this way, any remaining problems will be in the sender or connecting wiring.




Engine Trim Systems: Suzuki 2-Stroke Outboards

Normal gauge/sender operation: Pointer reflects engine movement within the trim range. At the point where trim speed increases, the pointer will be at the full "Up" position.

  1. Senders for trim systems are not available from Teleflex. Senders must be purchased from the engine dealer.
  2. Make sure your engine has a trim sender. Not all engines have a trim gauge option.
  3. The Suzuki sender harness has a 4-wire connector that mates with the short harness from the gauge. Make sure the connectors are properly connected. In addition, the gauge requires a ground connection (black wire with gray stripe), and 12 vdc (gray wire) that switches on/off with the key switch. If lighting is desired, connect the light socket's black wire to ground, and its white wire to another gauge's light terminal or the panel light switch.
  4. The Trim Gauge can be tested by: Disconnect the 4-wire harness connection. Power the gauge by connecting 12 vdc positive to the gray wire and a good ground to the black wire with gray stripe. Have no other wires connected to the gauge. The pointer will slowly move towards the "Up" end of the scale. This will take several seconds, and the pointer should stop to the right of the "Up" mark. Next, with the power still connected, carefully short the gauge harness's green wire terminal to the pink wire terminal. Pointer should go to the full "DOWN" position. If the gauge reacts this way, any remaining problems will be in the sender or connecting wiring.




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