Goofit Single Pulse Generator (Crankshaft Position Sensor) For John Deere 445 Riding Mower/FD620D Engine Original Part Number: AM118220 Ignition Signal Generator--DTEKGAZ

[Specific Trigger Sensor for John Deere 445 Lawn Tractors] This single-pulse coil crankshaft position sensor is specifically designed for John Deere 445 lawn tractors with the FD620D engine. It meets original specifications and is identical to part number AM118220. Its robust housing is resistant to high temperatures, oil, and moisture, and is specifically designed for tough outdoor use. It accurately detects crankshaft speed and position and delivers a stable and accurate trigger pulse signal to the ignition control unit. This important electronic sensor component ensures reliable starting, smooth running, and optimal engine performance. [Perfect Engine Compatibility] This product directly replaces part number AM118220 and is specifically designed for John Deere 445 lawn tractors with the FD620D engine. (Note: This product is fully compatible with John Deere equipment that uses this part number. Please check the part number in your equipment's repair manual, on the original parts, or confirm final compatibility with your equipment and engine model before purchasing.) [Troubleshooting Lawn Tractor Starting and Running Problems] Replacing the original sensor with a faulty one (problems related to internal coil aging, magnet failure, damaged wiring harness, or oxidized connector) effectively resolves the following issues: difficulty or inability to start the engine; unexpected engine stalling; rough idling and intermittent loss of power. Ignition system malfunction (after checking spark plugs, ignition coils, and other components). [Professional Installation and Air Gap Adjustment]

This product is a precision electromagnetic induction sensor, typically installed near the flywheel housing or control housing cover.

Successful installation requires precise adjustment of the air gap between the sensor head and the trigger teeth of the flywheel (or signal pinion). The air gap must be set exactly to factory specifications (typically 0.3 to 1.0 mm) using a non-magnetic feeler gauge. The values in the official John Deere Service Manual must be followed precisely. An incorrect air gap will result in a weak or no signal.