2011 Arctic Cat 700 Diesel SD Service Manual, Page 40Get this manual
5Clean the fire ring sealing surface on the injector tip taking care not to damage the injector tip
NOTE: small amount of lithium grease applied to the washers will aid in keeping them in place on the injector while installing
7Install the injector in the cylinder from which it was removed, taking care to avoid dropping the push rod into the engine
NOTE: soft brass wire brush is recommended for cleaning injector seating surfaces