If you go to Searspartsdirect.com and search for 7.5hp outboard motor several models come up. you can search through them to find the one that matches yours. The model number you gave is for the block assembly, there should be a tag on the transom bracket with the model number. It should start with something like 217-. A quick search of ignition part numbers from the Sears site shows many parts available on Amazon.
