2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 221Get this manual
ENGINE TOP END 6-23 Cylinder Head
Cylinder Compression Measurement
O Use the battery which is fully charged
Thoroughly warm up the engine, while checking that there is no compression leakage from around the spark plugs or the cylinder head gasket
CAUTION
Do not run the engine without cooling water supply for more than 15 seconds, especially in high revolutionary speed or severe engine and exhaust system damaged will occur Stop the engine Remove the front storage pocket (see HullEngine Hood chapter) Disconnect both two connection on the ignition coil primary lead connectors RemoveSpark Plugs (see Spark Plug Inspection in the Periodic Maintenance chapter) Attach the compression gauge [A] and adapter [8] firmly into the spark plug hole Using the starter motor, turn the engine with the throttle fully open until the compression gauge stops rising; the compression is the highest reading obtainable""
Special ToolsCompression Gauge, 20 kgfcm2: 57001-221 Compression Gauge Adapter, M10 1.0: 57001-1317 Cylinder Compression (JT150087F88F) Usable Range: 819268 kPa (8.312.9 kgfcm 2, 118184 psi) 380 rmin (rpm) Cylinder Compression (JT1500E9FIF9F -) Usable Range: 840298 kPa (8.613.2 kgfcm 2, 122188 psi) 350 rmin (rpm)