MerCruiser 6.2 MPI, User Manual

Page: 79 / 110

Section 5 - Maintenance
90-864197072 NOVEMBER 2007 Page 71
NOTICE
Flushing the engine when it is not operating will result in water collecting in the exhaust
system, damaging the engine. Do not supply flush water for more than 15 seconds without
the engine operating.
3. Completely open the water source to provide maximum water supply.
4. Place the remote control in the neutral idle speed position.
5. Immediately start the engine.
NOTICE
Operating the engine out of the water at high speeds creates suction, which can collapse
the water supply hose and overheat the engine. Do not operate the engine above 1400
RPM out of the water and without sufficient cooling water supply.
6. Depress the throttle only button and slowly advance the throttle until the engine reaches
1300 RPM (± 100 RPM).
7. Observe the water temperature gauge to ensure that the engine is operating in the
normal range.
8. Operate the engine with the transmission in neutral for a minimum of 10 minutes.
9.
For power packages operated in salty, brackish, mineral‑laden or polluted water:
Continue to operate the engine until the discharge water is clear.
10. Slowly return the throttle to idle speed position.
NOTICE
Flushing the engine when it is not operating will result in water collecting in the exhaust
system, damaging the engine. Do not supply flush water for more than 15 seconds without
the engine operating.
11. Stop the engine.
12. Immediately shut off the water supply and remove the flushing attachment.
13. Remove the flushing connector from the water inlet.
14. Tag the ignition switch with an appropriate tag requiring the seacock to be opened or
the seawater inlet hose to be reconnected prior to operating the engine.
15. Repeat the flushing procedure on the next engine, if equipped.
Battery
Refer to specific instructions and warnings accompanying your battery. If this information
is not available, observe the following precautions when handling a battery.
!
WARNING
Recharging a weak battery in the boat, or using jumper cables and a booster battery to
start the engine, can cause serious injury or product damage from fire or explosion.
Remove the battery from the boat and recharge in a ventilated area away from sparks or
flames.
!
WARNING
An operating or charging battery produces gas that can ignite and explode, spraying out
sulfuric acid, which can cause severe burns. Ventilate the area around the battery and
wear protective equipment when handling or servicing batteries.