You need to be more specific on the year of your motor to get the right manual. I recommend that you get a factory service manual. PDF manuals for outboards can be confusing on cross referencing parts. Here is a ebay link that has several manuals, but steer away from anything that is not a factory service manual. http://www.ebay.com/sch/i.html?_odk...70.l1313&_nkw=1972+johnson+40+manual&_sacat=0
