To remove the automatic belt tensioner, first disconnect the battery negative lead and remove the engine top cover panel, and then the auxiliary drivebelt. Next, undo bolts and remove timing belt upper covers, remembering to undo outer cover bolted and secured by spring clips, and inner cover bolted by two bolts. Position an engine hoist across the engine compartment, fixing it to the right hand engine lifting eyelet, and bring it up to support the engine and transmission. Unbolt both parts of the engine right-hand mounting bracket, releasing refrigerant hoses if there is air conditioning. Remove the auxiliary drivebelt idler pulley and the timing belt lower cover. Jack up the front of the car, prop it on axle stands, and remove the right-hand front roadwheel. Release the fasteners that hold the inner wheel arch liner in place for access to the crankshaft pulley, then remove the belt lower guard if applicable. Hold crankshaft pulley stationary and slacken centre retaining nut on pulley, if necessary use a holding tool. For this purpose rotate the crankshaft in a clockwise direction until the timing marks line up and undo the timing belt tensioner upper retaining bolt and slacken the lower one, moving the tensioner assembly anti-clockwise to release it. Remove the tensioner and pick up the plastic spacer collar. If reusing the belt, mark the running direction of the belt and then slip the belt off the sprockets, tensioner and idler pulleys, taking care not to rotate the crankshaft or camshafts. Check the tensioner and idler pulleys to make sure they are not rough and renew them if needed, as well as the belt pulleys. Inspect the timing belt for signs of wear or contamination and replace it if there is any doubt, especially if the engine has been running for more than 36,000 miles with the current belt on it. Renew the tensioner assembly if there are indications of leaks or if there is no resistance. For refitting purposes, compress and lock the tensioner plunger before fixing it to the engine. Make sure the sprockets are aligned, then slip the belt over the crankshaft sprocket and other components and check the alignment of the sprocket marks before releasing the tensioner. Refit the spacer collar, timing belt inner cover and tighten all the parts, including the crankshaft pulley and auxiliary drivebelt. Reassemble the engine mounting, lower the engine and tighten all bolts to the recommended torque. Finally, refit the roadwheel, lower the car, re-connect the battery negative lead and replace the engine top cover panel. For a manually-adjusted belt tensioner, follow similar removal steps, making sure to slacken the tensioner centre bolt when rotating the pulley to remove tension from the timing belt. Check the condition of the belt and pulleys and renew as necessary. When refitting, make sure that the tensioner is in the right place and that the timing belt is fitted on the right way, adjust the tensioner if need and check the alignment of the sprocket marking after rotating the crankshaft.