Скачать или смотреть Mileage Issue In BS3 & BS4 Royal Enfield - Perfect Carb. Tuning

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CARBURETOR TUNING PROCEDURE (SOP)......

STEP 1. Warm up the engine adequately and set the idling screw so that the engine runs at a higher rpm than its normal idling specification (1300 RPM approximately).

STEP 2. Now turn the Mixture screw in or out slowly and select a position where the engine rpm reaches to the peek / highest speed position while setting. Now stop adjustment of Mixture screw. Normally this will occur in between 3 + 1 turns of Mixture screw from fully close position.

STEP 3. Now adjust the idle screw to bring down the engine revolution to the specified idle 1050 + 200 RPM.

STEP 4 After adjusting the idling rpm check the CO% (1 to 1.5% ) and readjust the mixture screw if necessary.

STEP 5. After adjusting idling speed, check for its stability / flat spot / missing if any, by accelerating 3 to 4 times. Repeat above said the steps untill engine speed increases smoothly.

NOTE : Incase the idle speed is too high will cause poor mileage, if it is too low engine will stall.

CAUTION : During idle speed turn the handle bar to extreme right or left hand side, if any change in idle speed noticed, the throttle cable may be improperly adjusted or wrongly routed. Correct the same before test ride.



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