Williams DIESELJET User guide

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

WILLIAMSJETTENDERS.COM
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FRANÇAIS
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ITALIANO
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DEUTSCH
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ESPAÑOL
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WILLIAMSJETTENDERS.COM

OWNER’S
HANDBOOK

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Thank You for
Choosing a Williams Dieseljet
This owner’s handbook has been compiled to help you operate your Dieseljet 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.
This Williams Dieseljet 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 for your own safety that you obtain handling
and operating experience before assuming command of the boat. Ability to steer 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 Dieseljet 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 Dieseljet 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)
•Whistle (USA specification only)
•Foot pump
•Inflation adaptor
•12v electric plug
•Inflatable tube repair kit
•Yanmar engine operator’s manual
Included with your Dieseljet
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Williams Jet Tenders consider the safety
of our customers of great importance. We
recommend people using our products
familiarise themselves 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 10
General Specifications, Engine
Specifications, Classification 11
General Layout: 445 12
General Layout: 505 13
General Layout: 565 14
General Layout: 625 15
Controls and Instrument Cluster 16
New Engine Break-in Period, Fuelling,
Before Use 17
Safety Check, Warning Lights, Starting
Procedure, Checking the Oil Level 18
Electrical System, Conductor
Identification, Fire Extinguisher 19
Engine Bay: 445 & 505 20
Engine Bay: 565 & 625 21
Exhaust System Flushing 22
Reboarding the Dieseljet 23
Reversing System, Lifting the Dieseljet,
Windscreen Care 24
Shaft Seal Lubrication, Routine
Maintenance, Servicing 25
Winterising/Dry Storage 26
Inspection Maintenance Table 27
Limited Warranty Certificate 28
Contents

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•Always perform the pre-use inspection
as specified in this book (see page 17).
• 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.
• Be sure you have at least the minimum
required safety equipment, lifejackets and any
additional gear needed for your trip.
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.
• If at any time, fuel leaks/odours are
found, do not start the engine. Have the boat
serviced by an authorised 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 start or operate the boat if
any person is not properly seated in a seat
intended for use when underway (see pages
12 –16) or if a person is nearby in the water.
• Crash Stops. Moving the shift lever
quickly from forward to reverse can cause a
rapid change in boat speed and trim. After
carrying out a ‘crash stop’ the reverse system
should have a full visual inspection.
• 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.
• 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.
WARNING. Do not exceed the
maximum recommended number of
persons. Regardless of the number of persons
on board, the total weight of persons and
equipment must never exceed the maximum
recommend load. This can be found on the
builder’s plate of the boat and specification
further on in this manual. Always use the
seats/seating spaces provided.
• Riding with passenger(s) or pulling
authorised boats, tubes, a skier or a
wakeboarder makes the boat handle
differently and requires greater skill.
• 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 23).
If a passenger does not know how to swim,
ensure that passenger wears a lifejacket at
all times and take extra precautions when
boating.
• 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 tow rope
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,
ability to steer 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 engine 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 underwater 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 manoeuvres,
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. Ability to steer the boat
is restricted while decelerating.
Familiarise yourself with the boat’s handling.
After running tender at high speeds it is good
practice to allow the engine to idle for a
minimum of one minute before switching off,
to allow the turbo to cool.
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 result in a rapid
deceleration and unpredictable handling.
Be aware that occupants of the boat could
become unseated during such a manoeuvre.
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 the 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 authorised dealer. A full list of
authorised 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 the exhaust system and will
result in serious engine damage.
SEACOCK VALVE
CAUTION. Risk of engine flooding
exists. A seacock 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 seacock 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 Dieseljet
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
Dieseljet 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.
BIMINI TOPS
DO NOT operate the vessel at speeds
greater than 14 mph when the Bimini is
raised.

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Warning Label Locations
Warning Labels should be clear and
visible at all times. Damaged or worn
labels can be reordered from your Authorised
Williams Dealer.
1 Dieseljet general information 08-0156
2 CE plate (Not US)
3 NMMA capacity (US Only)
4 Reverse system 08-0110
5 RYA kill cord 08-0315
6 No storage under helm
(445 & 505 only) 08-0465
7 Fuel system 08-0095
8 Flushing point 08-0477
9 Fire extinguisher 08-0030
10 Towing valve 08-0088
11 Reverse system
(under engine cover) 08-0110
12 Towing valve access 08-0479
13 Reverse system (transom) 08-0110
14 Boarding pole (if fitted) 08-0469
6
12
14
10
7
1
11
13
5
3
2
9
4
8

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Category C: This craft is designed to
operate in winds up to Beaufort force 6 and
associated wave heights (significant wave
height up to 2 m, see note below). Such
conditions may be encountered in exposed
inland waters, in estuaries and in coastal
waters in moderate weather conditions.
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.
NOTE The significant wave height is the mean
height of the highest one-third of the waves,
which approximately corresponds to the wave
height estimated by an experienced observer.
Some waves will be double this height.
General Specifications
Engine Specifications
Please refer to the Yanmar Engine Operator’s manual for all engine-related information.
Classification
Dieseljet model 445 505 565 625
Length (OA)* 4.45 m 5.03 m 5.71 m 6.32 m
Beam (OA)* 2.01 m 2.01 m 2.39 m 2.39 m
Height (OA) 1.38 m 1.38 m 1.49 m 1.53 m
Draught
(fully loaded) 0.42 m 0.42 m 0.50 m 0.50 m
Dry weight 840 kg 880 kg 1170 kg 1410 kg
Yanmar Engine 4JH110
(110 mhp)
4JH110
(110 mhp)
4LV
(150 mhp/195 mhp)
4LV
(195 mhp/230 mhp)
Top speed 40 mph/
64 kph
40 mph/
64 kph
40mph/64kph
44mph/71kph
44mph/71kph
46mph/74kph
Fuel Diesel Diesel Diesel Diesel
Fuel capacity†68 litres 68 litres 100 litres 140 litres
Seating capacity 7 8 9 11
Maximum
load capacity‡555 kg 725 kg 800 kg 900 kg
Tube compartments 5 5 5 5
Design category (CE) C C C C
* Dimensions may vary as the inflatable tubes are hand made. †Not all fuel tank capacity may be available, due to
boat trim and loading. ‡See Loading section on page 18.

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@Indicates seating position
@Indicates handholds
1Port and starboard navigation
light socket
2Anchor locker (under cushion)
3Shower filler and head
(option – under cushion)
4Stowage locker (under cushion)
5Footwell drains
6Boarding pole base
7Fuel filler (under cushion)
8Throttle/reverse control
9Tube inflation valves
10 Over-pressure valves
11 All-round white navigation
light socket
12 Mooring cleat
13 Ski pole
14 Hull Identification Number (HIN)
(under platform)
15 Engine flushing attachment
16 Seacock access (under seat)
General Layout: Dieseljet 445
14
@ @
@ @
@ @
@
5
55
3
4
10 10
910
9
9
9
9
16
12
13
11
15
2
7
86
1
@
@
@
@
@
@
@
@

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@Indicates seating position
@Indicates handholds
1Port and starboard navigation
light socket
2Anchor locker (under cushion)
3Shower filler and head
(option – under cushion)
4Stowage locker (under cushion)
5Footwell drains
6Boarding pole base
7Fuel filler (under cushion)
8Throttle/reverse control
9Tube inflation valves
10 Over-pressure valves
11 All-round white navigation
light socket
12 Mooring cleat
13 Ski pole
14 Hull Identification Number (HIN)
(under platform)
15 Engine flushing attachment
16 Seacock access (under seat)
Dieseljet 505
5
5
5
14
3
4
10
10 10
10
12
13
11
15
2
7
8
6 6
1
@ @
@
@
@
@
@ @
9
9
9
9
9
9
16
@ @
@ @
@ @
@
@

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@Indicates seating position
@Indicates handholds
1Port and starboard navigation
light socket
2Anchor locker (under cushion)
3Shower filler and head
(option – under cushion)
4Stowage locker (under cushion)
5Footwell drains
6Boarding pole base
7Fuel filler (under cushion)
8Throttle/reverse control
9Tube inflation valves
10 Over-pressure valves
11 All-round white navigation
light socket
12 Mooring cleat
13 Ski pole
14 Hull Identification Number (HIN)
(under platform)
15 Engine flushing attachment
16 Seacock access (under seat)
General Layout: Dieseljet 565
14
@ @
@@
@
@
@
@
@
@@
5 5
5
3
4
10
10
10
10
9 9
9
9
9
9
16
12
13
11
15
2
7
8
6 6
1
@
@
@
@
@
@
@
@@
5 5

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@Indicates seating position
@Indicates handholds
1Port and starboard navigation
light socket
2Anchor locker (under cushion)
3Shower filler and head
(option – under cushion)
4Stowage locker (under cushion)
5Footwell drains
6Boarding pole base
7Fuel filler (under cushion)
8Throttle/reverse control
9Tube inflation valves
10 Over-pressure valves
11 All-round white navigation
light socket
12 Mooring cleat
13 Ski pole
14 Hull Identification Number (HIN)
(under platform)
15 Engine flushing attachment
16 Seacock access (under seat)
Dieseljet 625
14
@ @
@@
@
@
@
@
@
@
@@
5
5
5
5
5
3
4
10
10
10
10
9 9
9
9
9
9
16
12
13
11
15
2
7
8
6 6
1
@
@
@
@
@
@
@
@
@
@@

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Controls and Instrument Cluster
Dieseljet 445 & 505
1Digital dash display
2Bilge pump switch
3Navigation light switch
4Horn switch
5Battery isolator
6VHF radio (option)
7Chart plotter (option)
8Throttle/shift control
9Ignition Key
10 Kill cord
Dieseljet 565 & 625
1Digital dash display
2Bilge pump switch
3Navigation light switch
4Horn switch
5Battery isolator
6VHF radio (option)
7Chart plotter (option)
8Throttle/shift control
9Ignition Key
10 Kill cord
7
5
8
1
6
10
9
4
23
7
10
9
5
6
1
8
4
23

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As part of its pre-delivery inspection your
new Dieseljet has been fully tested and
drained of fuel. When refuelling use only
Diesel fuel.
•Ensure ignition is in OFF position.
•Remove forward seat cushion to expose
fuel filler cap.
•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.
All Yanmar engines are fitted with a
manual fuel primer/pump. This may
require pumping at first use or when
engine has not operated for extended
periods.
The way your engine is operated during the
first 50 hours of use will play a very significant
role in determining its ultimate performance
and lifespan. The engine must be operated
at suitable speeds and power settings
during the break-in period. Refer to Yanmar
engine operator’s manuals for information on
running the engine during the first 50 hours of
operation.
The break-in period is very important and
must not be neglected.
Fuelling
New Engine Break-in Period
Tube pressure will fluctuate with temperature.
Inflate tubes in sequence to 24.80 Kpa/250
mB/3.6 psi, starting at the rear valves. 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.
•Check engine cover latches are secure.
•Check seacock is open before use.
Before Use
WARNING. ALWAYS attach yourself
to the kill cord when engine is
running. As a precautionary measure before
setting off, always test kill cord functionality by
pulling it away from its switch. The engine
should always stop.
WARNING. NEVER operate the boat
when bathers are using the boarding
ladder, as risk of serious injury exists from the
reverse deflector.
WARNING. NEVER investigate the
engine bay with the engine running
or ignition on. Ensure the boat is in a
depth of at least 0.95 m/3 ft of water.
Safety Check!

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CAUTION. Risk of engine damage.
In the event that a warning lamp or
buzzer activates during use, STOP engine
immediately, investigate the cause and/or
contact your authorised Williams Dealer.
Warning Lights
Starting Procedure
1Turn battery isolator on (see page 16).
2Secure any loose ropes that could get
sucked into the jet unit.
3Ensure the shift lever is in neutral position.
The maximum recommended load includes
the weight of all persons on board, all
provisions and personal effects and any
equipment not included in the boat weight.
4Connect kill cord to switch.
WARNING. Personal injury may
result if not attached.
5Turn key to start.
6Test kill cord for correct functionality
(see Safety Check! section on page 17).
WARNING. When loading the craft,
never exceed the maximum
recommended load. Always load the craft
carefully and distribute loads appropriately to
maintain design trim (approximately level).
Avoid placing heavy weights high up.
Checking the Oil Level
Wait 10 minutes after engine has stopped
to accurately check oil level.
•The oil level should be between the
Minimum and Maximum level holes on the
dipstick (right).
•Use only the recommended grade of oil
(SAE 10W30 or SAE 15W40). Refer to
Yanmar Engine Operator’s Manual.
•Do not overll.
CAUTION. Use of different oil to the
specified type may cause seizure or
early wear to inner parts, leading to shortening
of the engine’s service life.
Picture shows the dipstick for 445 and 505
models; on 565 and 625 models, the holes
are replaced by lines, with the top being the
upper limit and the bottom being lower limit.
2
3
1
1Full 2Add oil
3Operating range
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WILLIAMSJETTENDERS.COM
Conductor Identification
This chart sets out the corresponding colour to all abbreviations printed on cables on the craft.
Code Colour Code Colour Code Colour
BK Black BN Brown GY Grey
GN Green OE Orange BE Blue
PK Pink VT Violet WE White
LTGN Light green RD Red YW Yellow
PE Purple
Electrical System
1Navigation lights: OE 5 amp
2Bilge pump switch: GN 7.5 amp
3Spare: BN
4Horn: GY 5 amp
5Accessory (underwater lights): OE/PE 10 amp
6Accessory (shower): OE/PE 5 amp
7Accessory (music system): OE/PE 5 amp
8Accessory (deck lights): OE/PE 5 amp
9Accessory (AIS): OE/PE 5amp
10 VHF radio: OE/BE 7.5 amp
11 Chart plotter: OE/BE 7.5 amp
12 CAN power: OE/BE 5 amp
13 Bilge pump: RD/BE 10 amp
14 12v socket: WE/BE 25 amp
15 Footwell sump pump: RD/BN 10 amp
16 Reverse actuator: BK/PE 30 amp
Inspect system pressure regularly; refer to the
extinguisher label for Pressure/Temperature
Table. In some conditions the extinguisher
may require resetting; this is done by pressing
the extinguisher reset button found on the
extinguisher display unit. Refer to Engine Bay
pictures for the extinguisher’s location.
Fire Extinguisher
FUSE 1
RELAY
FUSE 13 FUSE 14 FUSE 15 FUSE 16
FUSE 2
FUSE 3
FUSE 4
FUSE 5
FUSE 6
FUSE 7
FUSE 8
FUSE 9
FUSE 12
FUSE 11
FUSE 10
Fuses are located within
the engine bay on the
port side. Fuse ratings
are as shown and
should not be changed
from those listed:

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WILLIAMSJETTENDERS.COM
1Coolant pressure cap
2Oil filler cap
3Fuel primer pump
4Boat system fuses
5Fire extinguisher reset display
6Coolant expansion tank
7Seawater filter
8Automatic greaser
9Reverse actuator system
10 Bilge pump (under driveshaft)
11 Engine oil dipstick (on side of engine)
12 Alternator
13 Fire extinguisher
14 Battery isolator
Inline fuses
30 amp fuse (constant live 13–15)
40 amp fuse (switched live 1–12)
2 amp fuse (remote battery switch)
10 amp fuse (remote battery switch)
Engine Bay: Dieseljet 445 & 505
This view shows the engine bay looking towards the rear of the boat.
8
2
45
3
13
12
14
1
6
7
9
10
11
Table of contents
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