Williams Minijet User guide

Owner’s Handbook
THIS MANUAL CONTAINS IMPORTANT INFORMATION AND MUST BE READ BEFORE OPERATING THIS TENDER
MINIJET

ENGLISH
4–23
FRANÇAIS
24–43
ITALIANO
44–63
DEUTSCH
64–83
ESPAÑOL
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OWNER’S
HANDBOOK
MINIJET

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Thank You for
Choosing a Williams Minijet
This owner’s handbook has been compiled to help you operate your Minijet with safety and
pleasure. It contains details of the boat and equipment fitted, together with information on its
operation and maintenance. Please read it carefully and familiarise yourself with the boat before
using it.
The Williams Minijet uses water jet propulsion. If this is your first boat or you are changing to a
type of boat you are not familiar with, please ensure that, for your own safety you obtain handling
and operating experience before assuming command of the boat. Maneuverability is restricted
while decelerating. Your dealer, national sailing federation or yacht club will be pleased to advise
you of sea schools or competent instructors.
The Minijet is a high performance boat. We recommend that a minimum standard of
RYA level 2 or ICC (International Certificate of Competency) is attained by the operator
prior to taking control of this boat. This manual assumes the operator has acquired
this standard of qualification and possesses knowledge of basic seamanship.
On handover your Williams Sales & Service Centre will guide you through the operating
functions and safety features of the boat. Remember to complete and submit your
warranty registration form either by post or online at williamsjettenders.com/warranty-
submission. Make a reference of the boat’s HIN in the box below. Please keep this
handbook in a secure place and hand it to the new owner if you sell the boat.
Hull Identification Number (HIN):
The HIN is located on the right hand side of the transom face below the platform step. Record it
in the box above.
Your Minijet will be delivered with the following items:
Boats fitted with optional accessories may be supplied with additional items.
•Owner’s Handbook
•Warranty Registration Document
•Pre-Delivery Inspection Document
•Service Record booklet
•Ignition key (2)
•Kill switch lanyard (2)
•Foot pump
•Inflation adaptor
•Inflatable tube repair kit
Included with your Minijet
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ENGLISH
Williams Jet Tenders consider the safety
of our customers of great importance. We
recommend people using our products
exercise care and common sense, and
comply with the safety information within the
Owner’s Handbook.
Always obey the safety labels fitted to the
tender and replace them if they become
unreadable.
Be aware of local laws and restrictions and
never use whilst under the influence of alcohol
or any substance which may affect your
judgement.
This symbol appears on a number
of labels fitted to the tender. The
symbol draws your attention to
the message and refers you to the
Owner’s Handbook.
This safety alert symbol appears
throughout the Owner’s Handbook
and appears on various labels fitted
to the tender. It means attention, be
alert, your safety is involved! Please read and
abide by the message that follows the safety
alert symbol.
DANGER
Indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not
avoided, could result in minor or moderate
injury.
Safety Information
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Safety Information 5
Before Getting Underway 6
Operators’ and Passengers’ Awareness,
Water Sports 7
Operating your Tender 8
Warning Label Locations, Classification 10
General Specifications, Engine
Specifications 11
General Layout, New Engine Break-in
Period 12
Controls and Instrument Cluster, Fuelling 13
Before Use, Safety Check, Power Limit
Switch, Checking the Oil Level 14
Starting Procedure, Warning Lights 15
Engine Bay 16
Exhaust System Flushing 17
Electrical Cable Colour Coding,
Fuel System, Lifting the Minijet,
Reboarding the Minijet 18
Quick Release Steering Wheel Operation,
Routine Maintenance 19
Full Inspection Maintenance Table 20
Winterising/Dry Storage 22
Limited Warranty 23
Contents

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•Always perform the pre-use inspection
as specified in this book (see page 14).
• Do not exceed the payload or passenger
capacities for this boat; these are listed on the
capacity plate located inside the helmsman’s
footwell, and in the specifications in this
manual.
• Overloading or an uneven load
can affect manoeuvrability, stability and
performance. Do not exceed the data on the
builder’s plate.
• Regularly inspect the boat, hull, engine,
safety equipment, and all other boating gear
and keep them in safe operating condition.
Before Getting Underway
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• Engine exhaust contains carbon
monoxide (CO), which can cause injury
or death if inhaled in sufficient quantities.
Educate all occupants about the risks and
symptoms of CO accumulation and CO
poisoning.
• Fuel vapors can explode, resulting in
injury or death. Always use the bilge blower
for a minimum of 4 minutes before starting
the engine, then turn it OFF above idle
speed. Use of the the bilge blower should
never replace checking for fuel vapor odours.
• If at any time, fuel leaks/odours are
found, do not start the engine. Have the boat
serviced by an authorized Williams dealer.
• Always keep in mind that as the throttle
is returned to the idle position, less directional
control is available. To turn the boat, both
steering and throttle are necessary.
• This boat has no brake. Stopping
distance will vary depending on initial speed,
load, wind and water conditions. Practice
stopping and docking in a safe, traffic-free
area to have an idea of how long it will take
to stop the boat under varying conditions.
• Do not release the throttle when trying
to steer away from objects. You need throttle
to steer. Do not use the boat’s reverse to stop.
• Do not start or operate the boat if
any person is not properly seated in a seat
intended for use when underway (refer to
boat this manual) or if a person is nearby in
the water.
• The boat’s jet thrust can cause injury.
Always accelerate slowly, and decelerate in a
controlled fashion.
• Observe the instructions on all safety
labels. They are there to help assure that you
have a safe and enjoyable outing.
• Riding with passenger(s) or pulling
other boats, tubes, a skier or a wakeboarder
makes the boat handle differently and
requires greater skill.
• Rear seats must not be used when
water skiing or wakeboarding is taking place.
• Always attach the kill cord. Should the
driver move away from, or be thrown from
the helm position, the kill cord will detach
from the console and the engine will stop.
Detaching the kill cord also allows a crew
member or passenger to stop the engine
if the driver were to become incapacitated
whilst at the helm, e.g. if they fainted.
• Always check your kill cord works at
the start of each day or session and check it
regularly for signs of wear.
• Do not leave kill cords out in the
elements. Extremes of temperature and UV
light will harm the kill cord in the long term.
• If your kill cord has lost its spiral
tension, replace it.
• When replacing kill cords, purchase
Williams’s own kill cord.
Special Safety Messages

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• Each boat operator has a responsibility to
ensure the safety of his/her passenger(s) and
of other water users. Please follow all safety
instructions and operate your boat with care.
• Operation of this boat by a person
under 16 years of age or a person with a
disability that impairs vision, reaction time,
judgment or operation of the controls is not
recommended.
• Never operate a boat while under the
influence of drugs or alcohol. They slow
reaction time and impair judgement. Allow
only qualified drivers to operate your boat.
• Remember that sun, wind, fatigue
or illness may impair your judgement and
reaction time.
• At least one passenger should be able
to operate the boat in case the operator is
unexpectedly unable to do so.
• Always use the kill cord when operating
the boat and ensure that all passengers are
familiar with its use.
• Ensure that any operator and all
passengers know how to swim and how to
re-board the boat from the water (Please see
instructions on how to do so on page 18). If
a passenger does not know how to swim,
ensure that passenger wears a lifejacket at
all times and take extra precautions when
boating.
• Be sure you have at least the minimum
required safety equipment, lifejackets and any
additional gear needed for your trip.
• Check that all lifesaving equipment is in
safe operating condition and easily accessible.
Show all passengers where this equipment is
and make sure they know how to use it.
• Keep an eye on the weather. Check the
local weather before departure and be alert
to changing conditions. Beware of offshore
winds and currents.
• Keep enough fuel on board for the
planned trip. Always verify fuel level before use
and during the trip. Apply the principle of 1/3of
the fuel to reach your destination, 1/3to return,
and keep 1/3in reserve. Allow for changes due
to adverse weather or other delays.
• Keep accurate and up-to-date charts
of the boating area on board. Before getting
underway, check water conditions in the
planned boating area.
• Before departure, inform a responsible
person ashore of your plans.
Operators’ and Passengers’ Awareness
Taking part in any water sport requires
increased safety awareness by the
participant and the boat operator.
• If you have never pulled someone
behind your boat before, it is a good idea to
spend a few hours as an observer, working
with and learning from an experienced driver.
It is also important to be aware of the skill and
experience of the person being pulled.
• Always have a second person on board
to observe the person in the water so the
driver can concentrate on operating the boat.
• Both the boat operator and observer
should monitor the location of the towrope
when participating in watersports.
• A slack tow rope can become
entangled with persons or objects in the
boat or in the water, particularly when making
a tight turn or circling and cause serious
personal injury.
Water Sports

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CAUTION. Operate the boat with
due care and at a speed appropriate
to the sea conditions. Be aware of local
laws and restrictions. Always carry out a visual
check of the boat and its components prior to
use. Adhere to the maintenance schedule.
WARNING. This boat uses a water
jet propulsion system which may
exceed the performance and behave
differently to other boats you have
operated in the past. At slower speeds,
maneuverability is reduced.
WARNING. The Operator of this boat
must be of a suitable age and
competence, have read and understood
the owner’s manual and safety labels,
have been familiarised with the correct
use of this boat, possess knowledge of
basic seamanship and hold the necessary
qualifications as required under law.
WARNING. Never permit a guest to
operate this boat unless the guest is
of suitable age and competence, has
read and understood the owner’s manual
and safety labels, has been familiarised
with the correct use of this boat,
possesses knowledge of basic
seamanship and holds the necessary
qualifications as required under law.
WARNING. Never exceed maximum
passenger capacity under any
circumstances; doing so reduces stability
and control.
WARNING. Always wear the
appropriate buoyancy aid and ensure
all passengers do the same.
WARNING. Always operate
prudently according to visibility and
water conditions.
WARNING. Never operate the boat
under the influence of drugs or
alcohol. They will slow down reaction time
and impair judgment.
Operating Your Tender
Everyone participating in a water sport
should observe these guidelines:
• Be considerate to others you share the
water with.
• Allow only capable swimmers to take
part in any water sport.
• Always wear an approved personal
flotation device (PFD). Wearing a
properly designed PFD helps a stunned or
unconscious person stay afloat.
• Have a second person aboard to
observe the person being towed and inform
the driver about the participant’s hand signals.
The driver must give full attention to operating
the boat and the waters ahead.
• Do not tow a person in any water sport
on a short tow rope such that the person
inhales exhaust fumes in concentration.
Inhalation of concentrated exhaust fumes,
which contain carbon monoxide, can result in
CO poisoning, personal injury and death.
• Give immediate attention to a person
who has fallen. He or she is vulnerable in the
water alone and may not be seen by other
boaters.
• Approach a person in the water from
the lee side (opposite the direction of the
wind). Turn off the motor before coming close
to the person.
• Turn off engine and anchor the boat
before swimming. Participate in water sports
only in safe areas. Stay away from other
boats, channels, beaches, restricted areas,
swimmers, and heavily travelled waterways
and under water obstructions.
• Swim only in areas designated as safe
for swimming. These are usually marked with
a swim area buoy.
• Do not swim alone or at night.

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WARNING. Never perform high
speed and extreme maneuvers,
which could result in loss of control.
WARNING. Always attach the kill
cord to your leg. Removal of the kill
cord will stop the engine in the event of an
emergency.
WARNING. Manoeuvrability of the
boat is restricted while decelerating.
Familiarize yourself with the boat’s handling.
This boat uses a water-jet propulsion system
and has unique characteristics in steering. The
throttle produces thrust from the jet pump, the
directional control is provided by opening the
throttle and turning the wheel in the direction
of your turn. High thrust will turn the boat
sharply; low thrust will produce less turning
force. There is no rudder, so while underway
there is no steering without thrust.
WARNING. Moving the shift lever
rapidly from forward to reverse
whilst the tender is traveling at speed (a
crash stop) will cause the boat to rapidly
decelerate and alter trim. Be aware that
occupants of the boat could become
unseated during such a maneuver.
If weed or debris gets caught in the jet unit
during use, cavitation can occur, causing a
decrease in forward thrust. If this condition is
allowed to continue the engine may overheat,
resulting in serious damage. If there is any
sign of debris or weeds etc blocking the jet,
remove the boat from the water.
Switch off battery isolator and remove all
debris from around the jet unit. DO NOT
make repeated attempts to start your
tender if it has been blocked or jammed
by debris or rope as engine damage
may occur. In case of difficulty consult
your Williams authorized dealer. A full list of
authorized dealers/engineers is available at
williamsjettenders.com.
RECOVERY
CAUTION. Do not attempt to lift or
recover the tender by the transom.
Any stern-up angle will cause water to enter
the engine from exhaust system and will result
in serious engine damage.
TOWING VALVE
CAUTION. Risk of engine flooding
exists. Towing valve is fitted. The valve
must be in the CLOSED position when your
tender is being towed and the OPEN position
when your tender is being used. When towing,
the towing valve must be closed, and the
reverse bucket must be in the forward/ahead
position. Failure to observe correct valve
position will result in serious engine
damage.
MOORING
CAUTION. Do not leave the Minijet
moored for extended periods as this
may result in an accumulation of marine
growth and a loss of performance.
BEACHING
CAUTION. DO NOT operate in less
than 0.95 m/3 ft of water as debris
may enter the jet unit. DO NOT drive the
Minijet onto the beach. Stop the engine
before beaching, as damage to the pump or
engine cooling may occur.
After beaching, move the boat into deeper
water and rock from side to side several times
to remove sand from the intake area. Failure to
do so could cause damage to the jet unit.
TRIM
CAUTION. Do not overload the boat.
At all speeds be aware of trim and keep
weight evenly distributed.
Above: Towing valve warning sticker.

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Warning Label Locations
1 CE plate (Not US)
2 NMMA Sticker (US Only)
3 Fire extinguisher safety label
4 Rotax power label
5 Do not block (Bilge blower vent)
6 Minijet general information label
7 Battery reconnect
8 Caution towing label
9 Carbon monoxide exhaust warning
(Helm) (US Only)
10 Carbon monoxide exhaust warning
(Transom) (US Only)
11 Meets US EPA EVAP standards label
12 Inspect fuel system label
Category C: Considered to be designed
for a wind force up to, and including 6, and
significant wave height up to, and including
2 metres.
This boat complies with ISO 6185-3. The
CE plate is located in the starboard rear
footwell. The CE plate is the certification to
European Directive 94/25/CE. This boat is
also compliant with US Coastguard and ABYC
regulations.
Classification
11
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5
6
3
7
9
12
8
2
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General Specifications
Minijet 280
Length (OA)* 2.79 m
Beam (OA)* 1.54 m
Height (OA) 0.83 m
Draft (fully loaded) 0.24 – 0.35 m
Dry weight 210 kg
Top speed 38 mph/61 kph
Fuel Petrol
Fuel capacity 28 litres
Seating capacity 3
Max load capacity 330 kg
Tube compartments 4
Design category (CE) C
* Allow 1% tolerance in length and beam due to variation in tube pressure.
Engine BRP Rotax ACE 900
Maximum power 50hp/37.2kW @ 6000 rpm
Recommended
fuel quality
Unleaded gasoline (super), octane rating of at least 95 ROZ or 85 MOZ.
USA: At least Premium 91, unleaded
Minimum fuel
requirement
Unleaded gasoline, octane rating of at least 91 ROZ or 82.5 MOZ.
USA: At least Regular 87, unleaded
Please note Low-quality fuel can cause loss of power and/or increased fuel consumption.
Oil grade XPS 4-stroke synthetic blend oil (summer grade) or equivalent 5W-40
semi synthetic-based oil
Oil capacity 3.5 litres at first filling (1.8 litres at service oil change)
Please refer to the Rotax Engine Operator’s manual for all engine-related information.
Engine Specifications

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@Indicates seating position
@Indicates handholds
1Lifting Points
2Towing valve (under engine hatch)
3Throttle/shift control
4Fuel Filler (under front cushion)
5Engine instrumentation
6Drain Bungs
7Hull Indentification Number (HIN)
(on transom)
8CE Plate
9Tube Inflation Valves
10 Waterski bridle attachment points
CAUTION.
Towing weight limit is 70kg
General Layout
Consult your Rotax engine operator’s manual.
A break-in period of 10 hours is required
before continuous operation at full throttle.
To achieve a good break-in, a maximum of
3/4throttle should be observed, however, brief
acceleration and speed variations contribute
to a good break-in. Williams suggest that after
the first 10 hours of operation, the engine be
checked by an authorized BRP/JPS ROTAX
marine engine dealer.
The break-in period is very important and
must not be neglected.
New Engine Break-in Period
1010
66
3
4
99
8
5
99
1
11
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@ @
@
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2
7

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1Isolator Key
2Kill Cord Socket
3Start/Stop Button
4Bilge Blower Button
5Throttle/Shift Control
6Instrument Cluster
Controls and Instrument Cluster
6
3
5
2
1
4
As part of its pre-delivery inspection your
new Minijet has been fully tested and
drained of fuel.
• Ensure ignition is in OFF position.
• Re-fuel in a ventilated area.
• Do not overfill the tank; be careful not to
spill fuel.
• Tighten fuel cap securely after re-fuelling.
• Open engine hatch and inspect bilges after
re-fuelling.
• The filler cap has an integral breather.
Do NOT hose around the fuel filler area as
water may enter the fuel tank.
MINIMUM OCTANE RATING
CAUTION. Do not use fuel from fuel
pumps labeled E85. Use of fuel labeled
E15 is prohibited by US EPA Regulations.
Fuel containing Ethanol can result in problems
in the fuel system and engine, resulting in:
• Starting and operating difficulties.
• Deterioration of rubber or plastic parts.
• Corrosion of metal parts.
• Damage to internal engine parts.
Fuelling
North America Rest of the World
RON+MON/2: 87 91 RON: 92 95
900 (ACE) ••* 900 (ACE) ••*
* For optimum engine performance

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MAX MIN
WARNING. ALWAYS attach yourself
to the kill cord lanyard before
starting the engine. Before setting off, as a
precautionary measure, always test lanyard for
its functionality by pulling away from its seating
– the engine should always stop.
The engine must be at operating temperature
before an accurate level is indicated on the
dipstick. The oil level should be between MIN
and MAX on the dipstick. Reinsert dipstick,
pushing in completely.
Use the correct grade of oil: Williams
recommends XPS-4 stroke synthetic blend
(Summer). Do not overfill.
The power limit switch is located within the
engine bay, on starboard side face. To operate
boat in low power mode, turn key to low
power section of key plate. For full power
mode, turn key into full power section. In both
positions the key can be removed.
WARNING. NEVER operate the boat
when bathers are reboarding, as risk
of serious injury exists from reverse deflector.
WARNING.
NEVER investigate engine bay with
engine running or ignition on.
Safety Check!
Checking the Oil Level
Power Limit Switch
Tube pressure will fluctuate with temperature.
Inflate tubes in sequence to 250 mB/3.6 psi.
Failure to observe this will compromise the
sea-keeping ability and watertight integrity of
the boat. Inflation valves are fitted with quarter-
turn locks to enable rapid deflation.
CAUTION. Tubes must be inflated in
the correct sequence to prevent
over-inflation.
• Set valves to shut and inflate tubes evenly,
starting at rear/right, rear/left, then forward
valves.
• Check bilge for fuel or water contamination.
• Tighten footwell drain plugs.
• Ensure towing valve is set in open position.
• Check engine cover latches are secure.
Before Use
2
3
1
1Full 2Add oil 3Operating Range

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Starting Procedure
Warning Lights
Ensure boat is in a depth of at least
0.95 m/3 ft of water.
1Turn on ignition key.
2Run bilge blower for 4 minutes.
3Secure any loose ropes that could get
sucked into jet unit.
4Ensure shift lever is in neutral position.
5Insert kill cord lanyard into socket.
WARNING. Personal injury may
result if not attached.
6Press Start/Stop button to start engine.
7Test kill cord lanyard for correct
functionality (see Safety Check!).
The Maintenance Reminder (1) indicator is
illuminated when required maintenance is due.
When the light is illuminated, seek service from
your nearest Williams dealer.
The High Temperature (2) indicator will
become illuminated and sounds an alarm
when the engine or exhaust system is, or
may be, overheating. A message will scroll
across the LCD screen identifying whether
the overheating is from the engine or exhaust.
Return to port as soon as possible and
contact your nearest Williams dealer.
The Check Engine (3) indicator light is
illuminated when an active fault has been
detetcted somewhere in the system. Look
for a message on the LCD screen which
will display the active fault which has been
detected.
When the check engine indicator blinks, the
Limp Home mode is active. Seek service
from your nearest Williams dealer.
The Low Oil Pressure (4) indicator is
illuminated and sounds an alarm when low oil
pressure has been detected in the system.
A scrolling message will appear on the LCD
screen. Return to port as soon as possible
and seek technical assistance from your
nearest Williams dealer.
3
5
2
1
4
1Isolator Key
2Kill Cord Socket
3Start/Stop Button
4Bilge Blower Button
5Throttle/Shift Control
23
4
1

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Engine Bay
This view shows the engine bay looking towards the rear of the boat.
6
3
4 5
10
2
8
9
7
1
1Engine fuses
2Boat fuse inline 30 amp
3Battery
4Battery isolator relay/
Overcurrent protection fuse
5Coolant expansion tank
6Engine air filter
7Power limit switch
8Towing valve
9Engine oil dipstick and filler
10 Fuel filler

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Exhaust System Flushing
4Run the engine for 20 seconds between
4000 and 5000rpm.
CAUTION. Never run the engine for
more than 2 minutes while the boat
is out of the water. The driveline seal has
no cooling when the boat is out of the
water.
5Ensure there is water flowing out of the jet
pump while flushing.
IMPORTANT: If water does not flow freely
out of the jet pump during flushing, refer
to an authorized Williams dealer for
service.
6Close the water tap.
7Allow the engine to run on for no longer
than 10 seconds to allow water to exit from
the cooling system.
8Stop the engine.
CAUTION. Always close the water
tap before stopping the engine.
To prolong engine life it is very important to
flush the engine of salt water after use and
prior to storage. Failure to carry out flushing
will significantly reduce the life of engine
components and may invalidate the warranty.
In addition, it is advised to thoroughly wash with
fresh water around the jet pump area to remove
all salt deposits after use.
Flushing the exhaust system with fresh water
is essential to neutralize corroding effects of
salt and other chemicals present in water. It
helps to remove sand, salt, shells and other
particles in water jackets, exhaust system, the
intercooler (supercharged engines) and hoses.
Exhaust system flushing should be performed
when the boat is not expected to be used
again the same day or when it is stored for an
extended period of time.
CAUTION. Failure to flush the
system as necessary will severely
damage the exhaust system.
WARNING. Perform the flushing
procedure in a well-ventilated area.
Certain components in the engine
compartment may be very hot. Direct
contact with hot components may result
in skin burns. Do not touch any electrical
part or the jet pump area when the
engine is running.
1Wash the jet pump area with fresh water
before commencing the flushing procedure.
2Connect a water hose to the connector
located at the rear of the boat.
Do not open water tap at this time.
3Start engine and immediately open the
water tap.
CAUTION. Always start the engine
before opening the water tap. Open
the water tap immediately after the
engine is started to prevent overheating.
Never run the engine without supplying
water to the exhaust system when the
boat is out of the water.
1Pump assembly
anode
2Steering cable
3Reverse cable
4Footwell drain outlets
5Flushing attachment
6Bilge drain plug
2 3
44
1
6
5

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Electrical Cable Colour Coding
This chart sets out the corresponding colour to all cable printed abbreviations found on the craft.
Please refer to our website at williamsjettenders.com for the complete wiring diagram.
Fuel System
Lifting the Minijet
Reboarding the Minijet
WARNING. Pressurised fuel system.
Inspect system for leaks at scheduled
service intervals. All elements of the fuel
system function under pressure (4 bar). The
system remains pressurised after engine is
CAUTION. Damage to the tender
may result if the following procedure
is not adopted.
Lifting strops are available as an optional
accessory. Ensure hooks are attached
correctly before lifting.
switched off. Extreme care must be taken
when removing quick connectors during
filter change. Wear eye protection. No naked
flames.
WARNING. Risk of injury or death.
When Williams lifting strops are used,
please adhere to the Safe Working Load
values as follows: Minijet 280: 280 kg max.
1 Approach the boat and
hook both hands over the
tube.
2 Push your body forward
and upwards.
3 Swing your body round
once your waist is above
the water.
Code Farbe Code Farbe Code Farbe
BK Black VT Violet BN Brown
GN Green RD Red OE Orange
PK Pink GY Grey WE White
LTGN Light green BE Blue YW Yellow
Example: GN/YW signifies Green/Yellow.

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WILLIAMSJETTENDERS.COM
Quick Release Steering Wheel Operation
Routine Maintenance
The quick release steering wheel is an optional
accessory available on the Minijet. It reduces
the overall height of the tender to 0.71m.
1 To remove steering wheel from boat, pull
black tab (1) towards steering wheel to
release.
2 To replace wheel, pull black tab (1) towards
wheel and locate on central steering hub,
push all the way to the base of steering
hub before releasing tab. Ensure the
wheel is fully locked by pulling the wheel
towards you, ensuring it does not release
accidentally. Several ball bearings will locate
in reciprocal holes to lock the wheel to the
steering hub.
Please note: When located on the wheel,
the quick release collar will spin 360 degrees.
The collar is designed this way.
To ensure long service life and to
maintain the tender in a safe and reliable
condition please follow these routine
maintenance instructions. Williams
cannot accept any responsibility for
damage or injury resulting from incorrect
maintenance or improper adjustment
carried out by the owner.
1Wash tender regularly with fresh water to
remove salt deposits.
2Check engine oil level. (refer to section
Checking the Oil Level in this book).
3Check coolant level.
4Flush open loop cooling system.
5Apply a good quality marine grease
containing Teflon (e.g. Quicksilver 101) to
all control cables both under the helm and
at the pump.
6Check bilges for water ingress, oil or fuel
contamination and clean if necessary.
7Lightly grease the extending running light
pole base using white grease or similar.
8Check condition of the two pump anodes.
9Loss of tube pressure over 24 hours is not
unusual. Temperature and atmospheric
pressure will affect tube pressures. Check
pressures regularly.
10 For boats used in tropical environments,
the frequency of the routine maintenance
should be increased accordingly.
1

ENGLISH
20
WILLIAMSJETTENDERS.COM
Full Inspection Maintenance Table
Please use this section for servicing guidance and the Rotax engine manual for all engine-related
serviceable items.
These tasks require basic mechanical and/or electrical knowledge. Please refer to a qualified
engineer if you are not confident in carrying them out.
First
50 hours
or 1 year
Every
100 hours
or 1 year
Every
200 hours
or 2 years
To be
carried
out by
Engine
Engine oil and filter Replace Replace 1Repair Shop
Rubber mounts Inspect Inspect Repair Shop
Corrosion protection (spray
an anticorrosion lubricant
to metallic components in
engine compartment)
Lubricate
(Every 10 hours
in salt water
use)
Operator
PTO Seal and Sleeve Replace 2Repair Shop
Exhaust system
Exhaust System Inspect Inspect,
Clean 3Operator/
Repair Shop
Exhaust
system flushing Clean 1, 3 Operator
Cooling system
Hoses and fasteners Inspect Inspect Repair Shop
Coolant Inspect Inspect Replace Repair Shop
Fuel system
Throttle Body Inspect Inspect Repair Shop
Fuel Lines, connections,
pressure relief valve and
fuel system leak test Inspect Inspect Repair Shop
Engine management system
Fault Codes Inspect Inspect Repair Shop
Air intake system
Air Filter Inspect, replace
if required Repair Shop
1At storage period or after 100 hours of use whichever comes first. 2Replace at 200 hours of use,
irrespective of the number of years. 3Daily flushing in salt water or foul water use.