2008 Arctic Cat DVX 250 / 250 Utility ATV Service Manual, Page 15Get this manual
Engine OilFilter Replace the engine oil and clean the screenfilter at the scheduled intervalsThe engine should always be warm when the oil is changed so the oil will drain easily and completely1Park the ATV on level ground2Loosen the oil fill plugATV-0047B
3Tighten the jam nut against the throttle cable adjuster securely; then slide the rubber boot over the adjuster
Adjusting Engine RPM
To properly adjust the idle RPM, tachometer is necessaryTo adjust idle RPM, use the following procedureNOTE: The idle adjustment screw is located on the right side of the carburetor
3Remove the screenfilter cap from the bottom of the engine and drain the oil into drain panAccount for spring, O-ring, and screenfilter