1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 38Get this manual

1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 38

Tune-Up Procedure 1Visually inspect engine for leaks, missing or loose parts, or other obvious defects2Compression checkProper
IF the engine shows variation greater than 15 PSI (100 kPa), check for: damaged head gasket damaged pistons broken or stuck
piston rings scored cylinder walls IF the engine has equal compression and runs normally, continue the tune-up procedure
ill ceramic portion of plug is not crackedReplace if cracked to prevent sparks 3Clean and regap or replace spark plugsMake
certain i Replace deteriorated or damaged parts such as wires, boots, etc which may emit sparks'" 5Replace in-line fuel filterReplace
deteriorated or dam- '" 4Inspect and test ignition componentsSee Section 3 i aged fuel system parts such as hoses or gaskets