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*The magnetic speed sensor indicates when ring gear teeth, or other ferrous projections, pass the tip of the sensor.
*Electrical impulses are induced within the coil and sent to the speed control unit. The signal from the magnetic speed Sensor, teeth per second (HZ) , is directly proportional to engine speed.
*The magnetic speed sensor is mounted in the ring gear case or flywheel bell housing of the engine.
*The threaded hole for the speed sensor should be perpendicular to the centerline of the crankshaft and centered
Over the ring gear teeth.
*A spot face should be present to provide a flat surface on which to anchor the locknut.
*With the engine stopped, screw the speed senor in until it touches a gear tooth, then back it out 3/4 of a turn and secure it with the locknut.
*Any ferrous gear may be used as long as the frequency and amplitude of the resulting signal meet the speed control unit specifications.
*The wire leads should be twisted for their entire length from the magnetic speed sensor to the control unit.
*The leads may need shielding if they are longer than 10 ft. (3m) , or if external interference is present.
*Do not connect either of the speed sensor leads to anything but the speed control unit used. The shield should not be connected at the speed sensor end.
3/8 - 24 UNF Threaded.
2.5" Length with 6' Shielded Cable.
All are designed and tested to operate within a temperature range of -65°F to 225°F (-55°C to 105°C).
Magnetic Speed Sensors are with Wire Leads.
Item Pickup Length Thread Length Lead Length Thread Size Drill Size.
MSP 6729 2.7 2.25 72.00 3/8-24 UNF-2A. 332.