Hamilton Jet HJ241, Manual

Page: 88 / 202

8.2
8 MAINTENANCE
8.3 P
RESERVATION
: (P
OST
-I
NSTALLATION
)
HJ-241 / HSRX
8.3 PRESERVATION: (POST-
INSTALLATION)
When the vessel is not operational for an extended
period, the following procedures must be followed
to prevent marine growth and corrosion problems.
IF THE JET UNIT IS TO BE LAID-UP, CARRY OUT
THE FOLLOWING:-
1. Clean down the whole Jet Unit and wash inside
and out with fresh water.
2. Hose the inside of the Jet through the Intake Grill
and the Nozzle. Allow to dry completely.
3. Spray the Jet Unit with a suitable corrosion
protection oil such as Shell Ensis.
4. Oil and lubricate all moving parts.
5. Carry out the following on a monthly basis:-
a) If the engine cannot be run, turn the
Mainshaft by 180º. This can be done
manually.
b) Stroke the Reverse Duct fully six times and
leave in the raised position.
c) Operate the Steering from lock to lock fully six
times.
IF THE JET IS TO REMAIN MOORED, CARRY OUT
THE FOLLOWING:-
1. Actively prevent marine growth through the
following procedures:
a) Paint the inside and outside of the Jet Unit
with antifouling compound.
b) Keep light away from the Jet Unit. Moor the
vessel in deep water rather than shallow
water.
c) Place an opaque bag over the Steering Nozzle
to prevent light entering the inside of the Jet
Unit. In shallow water a similar cover should
be tied over the Intake Screen.
Perform the following procedures at an interval
ranging from 1 week to 1 month, depending on
operational conditions.
1. Run the Jet Unit for a short time.
2. Stroke the Reverse Duct and Steering Nozzle fully
six times. Leave the Reverse Duct in the raised
position and the Steering Pushrod fully retracted.
3. If the engine is not started, turn the Mainshaft by
180º once per week. This can be done manually.
C
AUTION
Do not run the jet unit out of the
water unless it is fitted with a Dry
Run Kit.
C
AUTION
Before moving any controls,
ensure that any marine growth is
removed from the Steering and
Reverse Linkage Rods. This will
prevent damage to the Seals that
these Control Rods pass through.