MIN
MAX
AIR BLEED
TO WA TER
PUMP
10 -- 15 psi (.7 -- 1 bar)
PRESSURE SPECIFICATION
MAINTENANCE
2.132004 Four Stroke PWC Service Manual
Engine Cooling System Pressure Test
1. Test the system pressure capacity by removing the air
bleed hose that connects the expansion tank to the
coolant outlet manifold on the intake--side of the
engine.
2. Insert a small bolt or plastic plug into the end of the
bleed hose and secure with small gear clamp.
3. Attach a Mity Vact hand pump to the expansion tank
air bleed nipple. Pressurize the expansion tank to 10 --
15 psi (.7 -- 1 bar). The internal engine cooling circuit
should maintain the pressure.
4. A drop in pressure may indicate a worn or damaged
hose, loose hose connection, or engine--related
mechanical damage.
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