Alamarin Jet AJ 340, Operation And Maintenance Manual

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Operation
Operation and maintenance manual
12 KHO/340/EN/1.0.0.
the right. A good rule to remember is that the boat's bow always turns in the
same direction as the wheel when reversing. When fast turns are needed, the
engine revolutions are not reduced. Instead, the turn is performed through the
combined motion of the nozzle and the deflector.
Emergency stop
When the boat is running forwards at great speed, it is possible to stop the
boat by only using the reversing deflector. When the reversing deflector is
lowered quickly, the boat stops in a very short distance. The emergency stop is
to be used in emergencies only.
WARNING!
Alert the passengers and tell them to hold on to something if
you are planning an emergency stop. Without being prepared,
a passenger may be thrown overboard.
3.4. Driving under difficult conditions
Shallow water
The jet boat can be used in very shallow water. However, note that especially
on high revolutions, the suction power of the intake is high (figure 8).
Figure 8. Suction power of the intake
Loose objects may get sucked into the grass rake and small objects may
wash through the jet. Stones may cause damage to the jet and its parts. In
sandy conditions, the impeller inevitably wears. A worn impeller requires
maintenance (section 4.8.
Impeller
, page 26).
Reed fields
At planing speeds, a jet boat usually crosses reed fields without difficulty. In
difficult conditions, however, clogging may be possible. A clogged jet must be
cleaned immediately (section 5.3.
Clogged jet
, page 37).
3.5. Dry running
The rear end bearings of the jet are lubricated by either water or grease,
depending on the model. The grease-lubricated model may be run by the