SG250 Owner’s and Service Manual
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Re-installation of the carburetor on the motorcycle is the reverse of installation. After installing the
carburetor and reassembling the motorcycle, start the engine and allow the motorcycle to come to
operating temperature. Adjust the idle speed with the carburetor slide idle speed adjustment screw to
approximately 1500 rpm (the SG250 does not have a tachometer; we make the adjustment by sound).
Air Filter Replacement
This section of the Owner’s and Service Manual addresses removal and replacement of the SG250 air
filter. The SG250 uses an oiled foam air filter. We stock all parts for the SG250 motorcycle, so when
you need a new air filter or oil for the filter, please call us at 909 445 0900 and we will ship these items
to you.
You should check your SG250 air filter every 2500 miles. If it is dirty or clogged, it will reduce the
motorcycle’s performance and you should replace it. You should check the air filter more often if you
ride in dusty or offroad conditions.
Caution! Do not operate your SG250 without the air filter. It will degrade the motorcycle’s
performance, it will cause the motorcycle to run poorly, and it will void your warranty.
Access to the SG250 air filter is gained by removing the rear
seat, the left body panel, and the filter structural support.
Start by unbolting the two bolts at the rear of the seat, slide
the seat to the rear, and lift it off the motorcycle.
Remove the left body panel by pulling it outward from the
top, and then lifting.
At this point, you will see the air filter housing and structural
support. The structural support is held in the housing by three
Phillips head screws.
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