I have a 1989 Mercury 100hp , 4 cyl OB. There is a plastic block that has a bolt running through it in the engine housing that connects the shift cable from the boat to the linkage on the engine. It slides back and forth on a track. Mine is cracked and I was wondering if anyone has a parts manual and can look up the Part no. for me. If any other info is needed let me know. <br /><br />Thanks<br />Dan