2003 YAMAHA FX cooling

E
4
EJU01086
MAINTENANCE AND
CARE
Storage ...................................................... 4-1
Flushing the cooling system .................. 4-1
Lubrication .............................................. 4-3
Fuel system ............................................ 4-4
Battery .................................................... 4-5
Cleaning the watercraft .......................... 4-6
Maintenance and adjustments .............. 4-7
Owner’s/Operator’s Manual and
tool kit ..................................................... 4-8
Periodic maintenance chart ................... 4-9
Inspecting the fuel system ................... 4-10
Changing the engine oil ....................... 4-11
Checking the air filter element ............. 4-13
Inspecting the jet thrust
nozzle angle ......................................... 4-14
Inspecting the shift cable ..................... 4-14
Inspecting and adjusting the
throttle cable ......................................... 4-14
Inspecting the QSTS mechanism ....... 4-15
Cleaning and adjusting the
spark plugs ........................................... 4-16
Lubrication points ................................. 4-18
Inspecting the battery .......................... 4-21
Adjusting the fuel injection system ...... 4-23
Replacing the fuse ............................... 4-24
Specifications ........................................ 4-25
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4-1
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Storage
WARNING@ Always place the watercraft upright in a
horizontal position when storing it, oth-
erwise fuel could leak out into the engine
or engine compartment, which could
result in a fire hazard.
@
Storage for prolonged periods of time,
such as winter storage, requires preventa-
tive maintenance to ensure against deterio-
ration. It is advisable to have the watercraft
serviced by a Yamaha dealer prior to stor-
age. However, the following procedures can
be performed by the owner.
EJU01813
Flushing the cooling system
Flushing the cooling system is essential
to prevent the cooling system from being
clogged with salt, sand, or dirt.
CAUTION:@
Do not supply water to the cooling
water passages when the engine is not
running. The water could flow back
through the muffler into the crankcase
causing severe engine damage.

Do not run the engine for more 15 sec-
onds without supplying water, other-
wise the engine may overheat.
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4-2
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1. Put the watercraft on land in a horizontal
position.
2. Remove the rear seat and seat storage
compartment. (See page 2-5 for seat
removal and installation procedures.)
3. Open the flushing hose connector cap1,
and then insert the garden hose adapter2
into the flushing hose connector3 and
turn it until it is securely connected.
4. Connect the garden hose adapter to a
water tap using a hose.
5. Start the engine, and then immediately
turn the water supply on until water flows
out continually from the jet nozzle.
6. Run the engine at idling speed for about
3 minutes watching the engine condition.
If the engine stops while flushing, turn
the water supply off immediately and
repeat the above steps.
7. Turn the water supply off, and then force
the remaining water out from the cooling
passages by alternately squeezing and
releasing the throttle lever for 10 to
15 seconds.
8. Stop the engine.
9. Remove the garden hose adapter and
secure the cap.
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4-9
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Periodic maintenance chart
The following chart gives general guidelines for periodic maintenance. However, depend-
ing on your operating conditions maintenance may need to be performed more frequently.
PMC-F1B1(
) This mark indicates maintenance that you may do yourself.
(
❍) This mark indicates work to be done by a Yamaha dealer.
MAINTENANCE INTERVAL
INITIALTHEREAFTER
EVERYPA G E
10
hours50
hours100
hours100
hours200
hours
ITEM
6
months12
months12
months24
months
Spark plug Inspect, clean, adjust



4-16
Lubrication points Lubricate


4-18
Intermediate housing Lubricate❍
*1

*2

*2 4-20
Fuel system Inspect❍❍
4-10
Fuel tank Clean❍❍
4-10
Trolling speed Inspect, adjust❍❍❍
4-23
Throttle shaft Inspect❍❍
—
Cooling water passages Flush

*3 4-1
Water inlet strainer Inspect, clean❍❍
—
Bilge strainer Clean❍❍
—
Electric bilge pump strainer Inspect, clean❍❍
—
Impeller Inspect

*4❍❍
—
Jet thrust nozzle angle Inspect


4-14
Steering master Inspect❍❍❍
—
QSTS mechanism Inspect, adjust

*4❍❍
4-15
Shift cable and mechanism Inspect, adjust

*4❍❍
4-14
Throttle lever Check operation

*4 3-12
Throttle cable Inspect, adjust❍❍
4-14
Stern drain plugs Inspect, replace

*4❍❍
3-9
Battery Inspect

*5❍❍
—
Rubber coupling Inspect❍
—
Engine mount Inspect❍
—
Nuts and bolts Inspect❍❍❍
—
Air filter Inspect❍

4-13
Engine oil Replace❍❍❍
4-11
Engine oil filter Replace❍
—
Valve clearance Inspect, adjust❍
—
*1: Grease capacity: 33.0–35.0 cm3 (1.11–1.18 oz)
*2: Grease capacity: 6.0–8.0 cm3 (0.20–0.27 oz)
*3: After every use
*4: Before every use
*5: Inspect fluid level before every use
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Specifications
MODEL
ITEMUnit FX140/FX Cruiser
WATERCRAFT CAPACITY
Maximum people on board Number of people 3
Maximum load capacity kg (lb) 240 (530)
DIMENSIONS
Length mm (in) 3,340 (131.5)
Width mm (in) 1,230 (48.4)
Height mm (in) 1,160 (45.7)
Dry weight kg (lb) 362 (798)
PERFORMANCE
Maximum output kW (PS) @ r/min 103.0 (140)@ 10,000
Maximum fuel consumption L/h (US gal/h, Imp gal/h) 44 (11.6, 9.7)
Cruising range at full throttle hr. 1.59
Trolling speed r/min 1,600–1,800
ENGINE
Engine type 4-stroke
Number of cylinders 4
Engine displacement
cm
3 (cu in)998 (60.9)
Bore & stroke mm (in) 74 ×
58 (2.91 ×
2.28)
Compression ratio 11.4:1
Lubrication system Dry sump
Cooling system Water cooled
Starting system Electric starter
Ignition system TCI
Spark plug CR9EB (NGK)
Spark plug gap mm (in) 0.7–0.8 (0.028–0.031)
Battery capacity V-AH 12-19
Charging system Flywheel magneto
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Index
A
Adjusting the fuel injection system ........ 4-23
Approval label of Emission control
certificate ................................................. 1-3
B
Battery ............................................ 3-10, 4-5
Beaching the watercraft ........................ 3-32
Bilge ........................................................ 3-9
Boarding alone ...................................... 3-25
Boarding and starting in deep water ..... 3-25
Boarding with passengers ..................... 3-26
Bow down.............................................. 2-14
Bow up .................................................. 2-14
C
Capsized watercraft .............................. 3-27
Changing the engine oil ........................ 4-11
Check engine warning indicator ............ 2-17
Checking the air filter element............... 4-13
Checking the trolling speed ................... 4-23
Cleaning and adjusting the
spark plugs ............................................ 4-16
Cleaning the jet intake and impeller ........ 5-3
Cleaning the watercraft ........................... 4-6
Connecting the jumper cables................. 5-6
Cooling water pilot outlet ................ 2-9, 3-15
Cruising limitations ................................ 1-12
D
Docking the watercraft .......................... 3-32
E
Emergency procedures ........................... 5-3
Emission control information
(For Canada only) ................................... 1-3
Engine break-in ..................................... 3-16
Engine compartment ............................... 3-6
Engine oil ................................................ 3-3
Engine oil level ........................................ 3-7
Engine overheat warning indicator ........ 2-19
Engine serial number .............................. 1-2
Engine shut-off cord (lanyard) ............... 3-14
Engine shut-off switch ............................. 2-8Engine stop switch .................................. 2-7
Enjoy your watercraft responsibly ......... 1-19
F
Filling the fuel tank .................................. 3-4
Fire extinguisher .................................... 3-11
Flushing the cooling system .................... 4-1
Front seat ................................................ 2-6
Front storage compartment ................... 2-20
Fuel and oil.............................................. 3-1
Fuel level ................................................. 3-6
Fuel meter ............................................. 2-16
Fuel system ............................................. 4-4
Fuel tank ............................................... 4-10
Fuel tank filler cap ................................... 2-7
Fuel warning indicator ........................... 2-18
G
Gasohol ................................................... 3-2
Gasoline .................................................. 3-1
Getting to know your watercraft ............ 3-21
Glove compartment ............................... 2-21
H
Handgrip ................................................ 2-14
Hazard information ................................ 1-16
Hood........................................................ 2-7
Hour meter/Voltmeter ............................ 2-17
Hull Identification Number (HIN).............. 1-2
I
Identification numbers ............................. 1-1
Important labels ....................................... 1-4
Inspecting and adjusting the
throttle cable.......................................... 4-14
Inspecting the battery ............................ 4-21
Inspecting the fuel system ..................... 4-10
Inspecting the jet thrust nozzle angle .... 4-14
Inspecting the QSTS mechanism .......... 4-15
Inspecting the shift cable ....................... 4-14
J
Jet unit................................................... 3-14
Jumping the battery ................................. 5-5
UF1B71.book Page 1 Tuesday, November 12, 2002 4:17 PM