54
SERVICE & MAINTENANCE
Suction performance check
Limit continuous operating time of the vacuum pump to 30
seconds or less.
Operating the pump for 30 seconds or more continuously may
cause the overheat of the engine. If the engine overheats, wait
until it cools down.
1. Set the suction port cap, close the drain valves
and start the engine.
2. Lift the priming lever to run the primer, and check that
the pressure gauge for suction points approximately
-0.08MPa
(-12psi). Return the priming lever to the
original position.
Vacuum leak check
After completing the vacuum performance check, leave it for 30 seconds and confirm
that the pointer of the suction pressure gauge keeps the same pressure indicated.
If a vacuum leak is found, isolate the cause by referring to the “15
TROUBLESHOOTING” . Then take the appropriate action and check the vacuum leak
again.
14
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