Kohler KD 441 — Static injection timing
Adjustments · Injection pump
For the Kohler KD 441, from the Kohler service manual.
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Procedure
- Disconnect the pipe from injection pump outlet 1 and fit a clear nylon hose 2.
- Insert a metal wire, protruding about 10 mm, into the hose.
- Connect the injection pump intake 3 with a hose to an auxiliary tank about 50 cm higher.
- Fill the tank with fuel.
- Set the flow governor lever of the injection pump in the stop position and lock it there.
- Turn the flywheel in the engine rotation direction.
- Proceed slowly during the compression phase; the fuel flowing from the tube will diminish.
- Stop as soon as it ceases to drip (one drop every 30-40 seconds is tolerated).
- Measure the distance between fixed TDC reference A on the crankcase and TDC reference point C on the flywheel.
- Compare the value with the conversion table (mm to degrees) to find the advance degrees.
- If the value does not match the specified value, replace the pad below the injection pump.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Replacement pads: 10 thicknesses between 4.0 and 4.9 mm
- A 0.1 mm variation of pad thickness = 1° on the flywheel
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.