3-25MEASURING THE COMPRESSION PRESSURE CHKADJCAUTION:WARNINGNOTE:4. Remove: spark plugBefore removing the spark plugs, use com-pressed air to blow away any dirt accumu-lated in the spark plug wells to prevent itfrom falling into the cylinders.5. Install: compression gauge 1Compression gauge90890-03081Adapter90890-041366. Measure: compression pressureOut of specification Refer to steps (c) and(d).Compression pressure (at sealevel)Minimum1300 kPa (13.0 kg/cm2,13.0 bar)Standard1550 kPa (15.5 kg/cm2,15.5 bar)Maximum1600 kPa (16.0 kg/cm2,16.0 bar)a. Set the main switch to “ON”.b. With the throttle wide open, crank the engineuntil the reading on the compression gaugestabilizes.To prevent sparking, ground all spark plugleads before cranking the engine.The difference in compression pressure be-tween cylinders should not exceed 100 kPa (1kg/cm 2, 1 bar).
