REMOVING THE CARB:
Remove all cables from carb body. (Accelerator & Choke)Remove the Fuel supply. (Be sure that the fuel cock is in off position)Now using a (-) screwdriver unscrew the two ring clips on both side (Engine side & Air box Side)of the carb. Now u will be able to remove the carb form the manifold.
CLEANING THE CARB:
Open two screws on the lower side of the carb. The lower part should now open. Clean all the parts inside using fresh petrol or some carb cleaning liquid. Be careful about the small parts. I will suggest to take a snap of the inside by your mobile cam before cleaning. it will help you to reassemble the carb again. If you can clean the both jets using some still wire (Say Clutch cable wire), or go to petrol pump for air pressure gun. These will clean the jets properly. Now using the snap assembled the CARB properly.Dont forget to keep the rubber washer it its place.Use the same way to install the carb into manifold. Check for all screws, pipes, fuel pipes etc. If possible replaced or clean the Air filter element before you jump to the tuning process. You will able to find the procedure to replace or cleaning of the same in your user manual.
TUNING:
Now for tuning find out two screws in the left side of the carb body, one is AIR screw and another is IDLE screw. AIR screw is small and should be in the left side of the carb. IDLE screw is little big and it comes with a spring to support it. Before you start the tuning, it is good practice to warm up the engine for a while, say 5 minutes, to reach it in its operating temperature. Now turn the IDLE screw and you will see the rpm is increasing, now by turning the screw fix the rpm at around 5000 rpm. Now this is the tricky part, using a small screw driver turn the AIR screw clockwise, you will see the rpm will now decrease, turn it fully in its position, don’t try too hard, it can damage the screw. Now the rpm will come down and engine will spatter. Turn the screw anticlockwise to that position where the rpm will not increasing no more, for that you have to turn the AIR screw 3- 4 times around. Now turn the IDLE screw, the rpm will fall, fix the rpm at around 1200-1300.Now take a spin, say 5 km to warm up the engine. Check if the idle rpm is increasing; adjust the IDLE screw again to fix it in 1200-1300 rpm.And you are done.
Remove all cables from carb body. (Accelerator & Choke)Remove the Fuel supply. (Be sure that the fuel cock is in off position)Now using a (-) screwdriver unscrew the two ring clips on both side (Engine side & Air box Side)of the carb. Now u will be able to remove the carb form the manifold.
CLEANING THE CARB:
Open two screws on the lower side of the carb. The lower part should now open. Clean all the parts inside using fresh petrol or some carb cleaning liquid. Be careful about the small parts. I will suggest to take a snap of the inside by your mobile cam before cleaning. it will help you to reassemble the carb again. If you can clean the both jets using some still wire (Say Clutch cable wire), or go to petrol pump for air pressure gun. These will clean the jets properly. Now using the snap assembled the CARB properly.Dont forget to keep the rubber washer it its place.Use the same way to install the carb into manifold. Check for all screws, pipes, fuel pipes etc. If possible replaced or clean the Air filter element before you jump to the tuning process. You will able to find the procedure to replace or cleaning of the same in your user manual.
TUNING:
Now for tuning find out two screws in the left side of the carb body, one is AIR screw and another is IDLE screw. AIR screw is small and should be in the left side of the carb. IDLE screw is little big and it comes with a spring to support it. Before you start the tuning, it is good practice to warm up the engine for a while, say 5 minutes, to reach it in its operating temperature. Now turn the IDLE screw and you will see the rpm is increasing, now by turning the screw fix the rpm at around 5000 rpm. Now this is the tricky part, using a small screw driver turn the AIR screw clockwise, you will see the rpm will now decrease, turn it fully in its position, don’t try too hard, it can damage the screw. Now the rpm will come down and engine will spatter. Turn the screw anticlockwise to that position where the rpm will not increasing no more, for that you have to turn the AIR screw 3- 4 times around. Now turn the IDLE screw, the rpm will fall, fix the rpm at around 1200-1300.Now take a spin, say 5 km to warm up the engine. Check if the idle rpm is increasing; adjust the IDLE screw again to fix it in 1200-1300 rpm.And you are done.
** THIS IS THE BASIC THEORY FOR TUNING THE CARB. YOU CANT ACHIVE THE GOAL AT FIRST HIT, BUT TRY IT YOURSELF, THIS IS NOT A ROCKET SCIENCE. I DID IN MY Bike ALSO; IT TAKES FIVE – SIX TIMES TO GET OPTIMUM POWER AND PICKUP.
2 comments:
Thanks for this blog. All screenshots can explain the full blogs easily. This is very easy to understand. Using this screen shots know the details becomes easy
What is the slow & main jet num in the carboratr 150cc pulsar bike
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