Inside a motor machine, there is a part called carburetor that has important function as well as others. Usually, if there are some problems making the machine not work, carburetor is the common part to examine whether there is a problem inside or not. Since it is vital in processing how much fuel to inject, the produced power depends on the adjustment. If it is about Honda 250EX, make sure that you have the correct Honda 250EX carburetor adjustment. In some following paragraphs we will discuss Honda 250EX carburetor adjustment.
Some Points to Know before the Adjustment
Just like common motor, physically there is no difference between Honda 250EX and other motorcycle in common. However, Honda 250EX carburetor adjustment is different and this needs to be treated different also from others. To do it by yourself, you must have Honda 250EX pilot screw carburetor adjustment that is ’97 and upper than it. This can also be appropriate information for 250SX quad with the same year.
Before you start Honda 250EX carburetor adjustment process, you need to notice some rule in using screw to adjust. One of the facts to know about pilot screw can be about the factory pre-set. Actually, Honda 250EX carburetor adjustment is not really required unless the Honda’s carburetor gets overhauled or certain new screws of pilot are installed. Pay attention to the engine because it must be in warm condition for getting an accurate adjustment. Definitely, ten minutes stopping and riding is adequate. Also, utilize a tachometer with some gradations that is 50 rpm or even smaller which will sign 50 rpm alteration accurately.
Step by Step in the Adjustment of Honda 250EX Carburetor
Noticing previous points, you can start doing Honda 250EX carburetor adjustment. As the first step, turn the screws clockwise till it lightly seats and do it by considering the given specification. As the caution, damage to the pilot seat will happen if the screw you use is definitely tightened against it. For the initial opening notice also the type about ’97 CA model with 2 3/4 turns out ’97 (except the type of California): 2 7/8 turns out, ’98-2001 which is 2 5/8 turns out and after 2001 that is 2 turns out.
After knowing that for Honda 250EX carburetor adjustment, warm up the engine for operating temp then stop it and connect a tachometer based on the instructions from manufacturer. Start the motor engine and then adjust its idle speed (1,400 +/- 100 rpm) by using the crew for throttle stop. Turn in or out the screw to get the highest speed of engine and it is followed by readjusting the idle speed by using the throttle screw for stopping. Turn in the pilot screw gradually till the speed of engine decrease 100 rpm. Afterward, turn the screw of pilot counterclockwise the specified turn number.
As the final opening in Honda 250EX carburetor adjustment notice also about ‘7 CA/’98-2001 with 7/8 turn out, ’97 (except the type of CA 34 turn out and the type after 2001 with 1/2 turn out. Finally, readjust the engine idle speed by using the throttle screw for stop.
Description: Honda 250EX carburetor adjustment is different from common motor engine. There are some differences between the screw types.