ANTI-STALL DEVICES.I.G.M.A.RotaryTypePump(TV8.510(M))There is no anti-stall device incorporated in this type of fuel injection pump.C.A.V.DPARotaryTypePumpsRefer to Fig. 11 (c) (d)1.Slacken locknut (2 or 7 ) sufficiently to enable the anti-stall adjusting screw (1 or 6) to be unscrewed two completeturns.2.Adjust idling speed to 625 rpm* with idling adjustment screw (4 or 2).3.Screw down anti-stall adjusting screw (1 or 6) until there is a very slight increase in engine speed, bring back half aturn and lock with lock nut (2 or 7).4.Accelerate engine to maximum no load rpm and immediately return to idle (See page 32). Should the period ofreturn from maximum rpm to idle exceed three seconds, the device has been turned too far.'This idle speed may vary according to application. If in doubt, refer to your nearest Perkins Distributor.Fig. 11 (c) Earlier Fuel Pump1.Anti-stall adjusting screw4.Idle adjustment screw2.Anti-stall locknut5.Maximum speed screw3.Air vent screwIf the engine stalls out, the device has not been turned in far enough. The necessary adjustment should be made toovercome either situation.Do not attempt to adjust the maximum speed screw (5). This is a factoryadjusted setting that requires special test equipment. If the setting isaltered, the result may be severe engine damage.-51-
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