1971 Evinrude Fisherman 6HP outboards Service Manual, Page 11Get this manual
TUNE-UP PROCEDURE When an owner brings motor to you for tune-up, or for some minor operating malfunction, the following procedure should be used as guide to determine the cause of the malfunctionWrite down the owner's commentsKeep an accurate card file on your service shop operationEach service operation should be on record as to the: OWNER'S NAME DATE MODEL NOSERIAL NONATURE OF COMPLAINT NATURE OF WORK PREFORMED COST TO THE OWNER WAS WORK PERFORMED UNDER WARRANTY? After writing down the owner's comments, check the motor visually and begin systematic tune-up procedureConsult the Trouble Check Chart to find the causes of any malfunction which may be discovered when tuning up the motor1Remove exhaust covers and cylinder headSlowly rotate flywheel and visually inspect pistons, rings, and cylinders for wear, freeness, and carbon deposits
If pistons, cylinders and rings are considered to be in satisfactory condition for continued service, clean out carbon, resurface and reinstall covers, using new gaskets2Surface cylinder head, and clean carbon from cylinder head and top of pistonsDo not alter piston deflectorReinstall cylinder head, USing new gasketSee Section 53Inspect and test pOints, condenser, coil, and ignition wiresCheck for sparkSee Section for test procedures4Install new upper bearing sealSee Section 5, page 5-4, Figure 5-6 inserts5Inspect carburetor and choke