TAPER PIN TOOL
COMPRESSION TESTING
Start and run outboard until it achieves operating
If engine shows a variation greater than 15 psi temperature, then shut OFF.
(100 kPa) between cylinders, check for:
- damaged cylinder head Disconnect crankshaft position sensor (CPS) con
- damaged pistons connector . Remove all spark plugs.
- broken or stuck piston rings
- scored cylinder walls Advance throttle linkage to WOT.
Return throttle to idle position and reconnect CPS Install compression tester’s hose attachment into connector. Replace spark plugs. Refer to Spark spark plug hole (14 mm threads).
Plug Indexing on p. 84. While cranking outboard with starter, note maxi mum pressure reading on gauge. Repeat procedure for each cylinder.
