What years did Honda make the 300EX?
In 1993 Honda introduced the TRX 300EX, an updated version of Honda’s beginners sport ATV, the TRX250X. The model remained in production for nearly 20 years with few changes other than updates to the styling. Honda was one of the first manufactures to engineer and market a sporty 4-stroke ATV’s.
How do I adjust the CARB on a Honda 300ex ATV?
Turn the air valve screw clockwise until the head of the screw touches the frame of the carburetor. Turn the air valve counterclockwise three full turns. This sets the air valve screw halfway out, a position that should allow you to ride at almost any altitude and almost any riding condition.
How do you adjust the carburetor on an ATV?
You must have the owner’s manual with the chart because you will be adjusting the carburetor to your location’s altitude. The engine will only run correctly if the jets are adjusted to the proper inlet. Tighten the jet pins using the screwdriver until they touch the frame of the carburetor.
Where is the air valve on a Honda 300ex?
Locate all of the small gold-colored pins on the surface of the carburetor and the small metal screw on the lower bottom right side of the carburetor. Turn the air valve screw clockwise until the head of the screw touches the frame of the carburetor. Turn the air valve counterclockwise three full turns.
Where are the adjustment screws on a carburetor?
Find the adjustment screws on the front of the carburetor. There should be two screws on the front of the carburetor, which are used to adjust the air and fuel mixture. Often these look like flat-head screws and you can use a screwdriver to turn them, adjusting the amount of fuel and air mixing in the carb.
Turn the air valve screw clockwise until the head of the screw touches the frame of the carburetor. Turn the air valve counterclockwise three full turns. This sets the air valve screw halfway out, a position that should allow you to ride at almost any altitude and almost any riding condition.
Locate all of the small gold-colored pins on the surface of the carburetor and the small metal screw on the lower bottom right side of the carburetor. Turn the air valve screw clockwise until the head of the screw touches the frame of the carburetor. Turn the air valve counterclockwise three full turns.
You must have the owner’s manual with the chart because you will be adjusting the carburetor to your location’s altitude. The engine will only run correctly if the jets are adjusted to the proper inlet. Tighten the jet pins using the screwdriver until they touch the frame of the carburetor.
Where are the Jets on an ATV carburetor?
Locate the jet pins and the air valve adjustment screw. The jets are in plain sight around the frame of the carburetor and look like small gold pins. The air adjustment screw will be on the lower right or left side of the carburetor. Open the owner’s manual and locate the carburetor jet adjustment chart.