Kohler — Speed Sensor Test
Testing & diagnosis
From a Kohler service manual — check it applies to your exact model before use.
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Procedure
- With Generator Master Switch in OFF/RESET position, connect a DC voltmeter between positive (+) lead (wire 24) at speed sensor and ground (wire 2). Voltmeter should read approximately 12 Volts DC.
- With generator set running, connect DC voltmeter negative probe to “0” terminal (wire 16 - white) on speed sensor. Place voltmeter positive probe on positive (+) terminal (wire 24 - red). Voltmeter sh
- If speed sensor is emitting a signal, check continuity of speed sensor leads (wires 2, 16 and 24). If not emitting a signal, test speed sensor through following procedure:
- Connect speed sensor, voltmeter and DC voltage source as shown in Figure 3-14.
- Touch sensing surface with a flat piece of iron or steel - at least 1/4 cubic inch (4.1 cm).
- Voltmeter test reading should equal source voltage.
- Remove iron or steel from sensing surface and observe NO test voltmeter reading.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Speed sensor air gap 0.020 in. (0.508 mm)
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.