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3.3 OIL PRESSURE OPERATION All Models When an engine is cold, the engine oil is more viscous (thicker). • Increased engine speed results in higher oil pressure. The • Decreased engine speed lowers the volume of oil pumped XL Models The oil pump is non regulatory and delivers its entire volume XR 1200X The feed oil pump incorporates a bypass valve that will open Oil Pressure Indicator Lamp See . The oil pressure indicator lamp turns on to indicate improper circulation of the engine oil. Refer to . The oil pressure indicator lamp turns on when: • Ignition switch is turned on prior to starting engine. • Oil is not circulating through the running engine. • Oil pressure is abnormally low on the running engine. • Engine is idling far below 1000 rpm. The oil pressure indicator lamp turns off when oil is circulating sm02321 Figure 3-1. Oil Pressure Indicator Lamp If the oil pressure indicator lamp remains lit, always check NOTE Residual oil pressure in the filter housing will sometimes pre- Table 3-20. Oil Lamp Troubleshooting PROBABLE CAUSES OIL PRESSURE INDICATOR LAMP Empty oil tank. Stays on at speeds above idle. Clogged feed line (ice and sludge, freezing temperatures). Air-bound oil line. Grounded oil pressure switch wire. Malfunctioning oil pressure switch. Diluted oil. Malfunctioning check valve. See and COOLING SYSTEM: XR 1200X, Cylinder Head Oil Feed Assembly Malfunctioning or improperly installed pressure relief valve. Incorrect idle speed. Malfunctioning or improperly installed check valve. See and 3.12 PRECISION COOLING SYSTEM: XR 1200X, Cylinder Flickers at idle. Malfunctioning or improperly installed pressure relief valve. 3-10 2013 Sportster Service: Engine |