The windscreen wipers are operated by an electric motor located under the dashboard, which drives the wiper arms through linked arms. This motor is a two-pole, compound type with a built-in parking switch and offers two speeds. Both SWF and Electrolux motors are used, functioning on the same principle. If the motor malfunctions, it is advisable to replace it rather than attempt repairs, as spare parts can be hard to find. For those willing to undertake repairs, early motors feature self-lubricating bushes, requiring a few drops of engine oil on the armature shaft and the gear housing filled with lithium-based grease. Noisy operation may indicate excessive end float of the armature shaft, adjustable via a screw, with the correct clearance being 0.004-0.012 in (0.1-0.3 mm). Later motors utilize a lubricating wick for the bearings, which should be dipped in engine oil, while the gear housing also needs lithium-based grease, and the clearance between the worm screw and gear wheel should be 0.002-0.006 in (0.05-0.15 mm). Linkage joints should be lubricated with lithium-based grease during reassembly. The wiper blades are parked on the right side when viewed from the driver's seat, but this position can be altered to the left by rotating the contact plate 180° for Electrolux motors. For SWF motors, the parking position can be adjusted by removing the shaft and turning it 180°.