Kohler KD 441 — Injector calibration
Adjustments
For the Kohler KD 441, from the Kohler service manual.
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Procedure
- Connect the injector to a manual pump and adjust the setting pressure by modifying adjusting shim 3 above the spring.
- When the spring is replaced, calibration must be carried out at a pressure higher than 10 bars.
- With the pressure gauge closed, press hard on the hand pump at least 10 times.
- Open the pressure gauge and press down on the pump once every second, checking the spraying process and pressure.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Opening pressure must lie between 255÷263 bar
- Jets must be uniform and well distributed
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.