Hamilton Jet HJ212, Installation And Service Manual

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Product Description
Installation and Service Manual
Steering assembly
Attached to the rear of the tailpipe, consists of a nozzle housing, nozzle insert and steering nozzle. The
steering nozzle is mounted inside the nozzle housing on vertical pivot pins and is rotated to port or starboard
by linkages attached to an inboard steering tiller. The nozzle insert ensures that the flow exiting the stator
section reaches the final steering nozzle outlet without being disturbed by the steering mechanism, thus
maximising steering efficiency.
Reverse duct

Can be positioned up or down by the reverse cylinder.

A splitter is incorporated into the reverse duct to divide and angle the astern jet stream downwards and
to the sides, clearing the transom and intake opening.

This stops recycling of water flow through the jet unit (which may be aerated or contain sediment) and
excessive disturbance to the bottom of the waterway.
Transom seal

Seals the hole in the transom through which the waterjet passes. It is bolted to the vessel transom and
incorporates a rubber ring which seals around the jet unit.
Reverse latch
The manually controlled reverse duct has a latch mechanism which locks the reverse duct in position. The
hand controller, automatically releases the brake when operated. The reverse duct cannot be moved by
hand from outside the boat, nor by the pressure of the water.
The latch has been factory set and should not require adjustment during installation.
Screen rake
May be fitted as an optional extra. The screen rake is a hand operated rake mounted in the lower half of the
intake, designed to clear any debris caught by the intake screen.
Dry run kit (optional extra)
The dry run kit is an optional extra that can be fitted to the jet unit at the customer's request.
It is purchased at additional cost and should be requested when the initial jet order is placed.
The dry run system is typically used for man-overboard boats and lifeboats where the engines need to be
started before the vessel is in the water.
The dry run kit consists of a special marine bearing which can be run dry for short periods of time. Standard
rubber marine bearings cannot be run dry.
Overflow preventer/hatch extension (optional extra)

The overflow preventer is an optional extra for use with jet units where the water level (when the vessel
is fully laden) is above the normal level of the main inspection cover.

It is attached to the top of the intake around the outside of the main inspection cover.
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