Perkins 900 Series Workshop Manual page 196

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5 Release the lock nut and rotate the adjustment screw counter-clockwise to increase, or clockwise to
decrease, the speed. When the speed is correct, tighten the lock nut and seal the screw. The person who fits
the pump must ensure that the adjustment screw is suitably sealed (D1) against interference after it has been
set initially. On pin-timed pumps a plastic cap (E1) is fitted on the maximum speed adjustment screw after initial
setting to prevent interference. This can only be reset by authorised Perkins personnel.
6 The adjustment screw on original fuel pumps is set and sealed by the manufacturer. The setting must not
be changed as this could affect the engine warranty.
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This document has been printed from SPI². Not for Resale
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C0079
Workshop Manual, TPD 1345E, issue 3
900 Series
C0079