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E
2
EJU01007
FEATURES AND
FUNCTIONS
Location of main components .............. 2-1
Operation of controls and other
functions ................................................... 2-4
Rear seat ................................................ 2-4
Front seat ............................................... 2-5
Hood ....................................................... 2-6
Fuel tank filler cap .................................. 2-7
Oil tank filler cap ..................................... 2-7
Fuel cock knob ....................................... 2-8
Engine stop switch ................................. 2-9
Engine shut-off switch ............................ 2-9
Choke knob ............................................ 2-9
Throttle lever ........................................ 2-10
Start switch ........................................... 2-10
Cooling water pilot outlet ..................... 2-11
Steering system ................................... 2-11
Handgrip ............................................... 2-12
Finger grip ............................................ 2-12
Engine overheat warning system ........ 2-13
Oil level warning lamp .......................... 2-14
Storage compartments ........................ 2-15
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1Engine shut-off cord (lanyard)
Attach to wrist so that the engine stops if the
operator falls off the watercraft.
2Engine stop switch
Push to stop the engine normally.
3Clip
Insert into the engine shut-off switch to enable
starting of the engine.
Remove to stop the engine or prevent acci-
dental star ting of the engine or unauthorized
use of the watercraft.
4Engine shut-off switch
Remove the clip to stop the engine and dis-
able it from starting.
5Start switch
Push to start the engine.6Oil level warning lamp
7Throttle lever
Use to accelerate and decelerate.
8Stern drain plugs
Use to drain water in the bilge when the water-
craft is on dry land.
9Jet thrust nozzle
Changes the direction of jet thrust according
to handlebar position.
0Cleat
Use to attach a towrope for pulling water-skier
or a rope mooring the watercraft.
ARide plate
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2-14
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EJU01132
Oil level warning lamp
If the oil remaining in the tank drops to
about 1.2 L (0.31 US gal, 0.26 Imp gal) or
the oil filter is clogged, the oil level warning
lamp begins to blink.
If the oil level warning lamp begins to
blink, refill with engine oil as soon as possi-
ble.
NOTE:@ The lamp will light up for 2 seconds after
starting the engine to check the lamp
operation.
If the warning lamp blinks with adequate
oil in the tank, check for a clogged oil fil-
ter.
@
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Page 42 of 116

3-1
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EJU01041
Fuel and oil
This engine uses Yamaha’s oil injection
system, which provides superior lubrication
by ensuring the proper oil ratio for all operat-
ing conditions. No fuel premixing is neces-
sary except during the engine break-in
period. Simply pour gasoline into the fuel
tank and oil into the oil tank.
EJU01911
Gasoline
WARNING@ GASOLINE AND ITS VAPORS ARE
HIGHLY FLAMMABLE AND EXPLOSIVE!
Do not smoke when refueling, and
keep away from sparks, flames, or
other sources of ignition.
Stop engine before refueling.
Refuel in a well-ventilated area with
the watercraft in a horizontal position.
Do not stand or sit on the watercraft
while refueling in case of fire.
Take care not to spill gasoline. If gaso-
line spills, wipe it up immediately with
dry rags. Always properly dispose of
gasoline-soaked rags.
Avoid overfilling the fuel tank. Stop fill-
ing when the fuel level just reaches the
bottom of the filler tube. Do not fill up
the filler tube because fuel expands as
it warms up and could overflow. If tem-
porarily leaving the watercraft with a
full fuel tank, do not leave it in direct
sunlight. Leave it in a well-ventilated
area with the watercraft in a horizontal
position.
Tighten the filler cap securely after
refueling.
If you should swallow some gasoline,
inhale a lot of gasoline vapor, or get
gasoline in your eyes, get immediate
medical attention.
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EJU01328
Filling the oil tank
WARNING@ Do not add gasoline to the oil tank.
Fire or explosion could result.
Oil in the bilge is a serious fire hazard.
Wipe up any spilled oil immediately.
@
CAUTION:@ Do not allow the oil tank to become com-
pletely empty. If the oil tank becomes
empty the oil injection pump must be
bled to ensure proper oil flow, otherwise
engine damage may occur. If bleeding of
the oil pump is necessary, have a
Yamaha dealer bleed it.
@
1. Open the hood and remove the front stor-
age compartment. Also, remove all seat,
so you can watch the oil level. (See page
2-6 for hood, and pages 2-4 and 2-5 for
seats.)
2. Open the oil tank filler cap, and very
slowly add engine oil to the oil tank.
3. Stop pouring when the oil just reaches
the bottom of the filler tube.
Oil tank capacity:
3.8 L (1.0 US gal, 0.8 Imp gal)
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3-5
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EJU01346
Pre-operation checks
EJU01347
Pre-operation check list
Before operating this watercraft, perform the checks in the following check list. See the
accompanying text in this chapter for details on how to perform the checks.
WARNING@ If any item in the pre-operation check list is not working properly, have it inspected
and repaired before operating the watercraft, otherwise an accident could occur.
@
NOTE:@ Pre-operation checks should be made thoroughly each time the watercraft is used. This pro-
cedure can be completed in a short time. It is worth the time spent to assure safety and reli-
ability.
@
ITEM ROUTINE PAGE
Engine compartment Remove all seats and front storage compart-
ment to ventilate engine compartment. Check for
fuel vapors or loose electrical connections3-6
Bilge Check for water and fuel residue and remove if
necessary3-7
Throttle Check that the throttle lever springs back 3-10
Steering system Check for proper steering system operation 3-10
Fuel and oil Check fuel and oil level and add if necessary
Check hoses and tanks for leakage3-6
Water separator Check for water and drain if necessary 3-7
Battery Check electrolyte level and battery condition 3-8
Hood Check hood for secure 2-6
Front and rear seats Check that the seats are properly secured 2-4–2-5
Hull/Deck Check the hull and deck for cracks or other dam-
age—
Jet unit Check for debris and remove if necessary 3-11
Fire extinguisher Check the condition and replace if necessary 3-9
Engine shut-off cord Check condition and replace is frayed or broken 3-11
Switches Check the start switch, engine stop switch and
engine shut-off switch for proper operation when
the watercraft is in the water3-12
Cooling water pilot outlet Check that water is discharged while the engine
is running and the watercraft is in the water3-12
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EJU01048
Pre-operation check points
EJU01728
Engine compartment
Ventilate the engine compar tment before
each use.
To ventilate the engine compartment,
remove the front seat and front storage com-
partment. (See page 2-5 for front seat, and
2-15 for front storage compartment.) Allow
the engine compartment to remain open for
a few minutes to allow any fuel vapors to
escape. Also, check for loose electrical con-
nections.
WARNING@ Failure to ventilate the engine compart-
ment could result in fire or explosion. Do
not start the engine if there is a fuel leak
or a loose electrical connection.
@
EJU01242
Fuel and oil systems
Check the fuel system for leakage, cracks
or malfunctions before each use. (See page
4-10 for check points and correct proce-
dures.)
1. Remove the fuel tank filler cap to release
any pressure that might have built up in
the fuel tank.
2. Remove all seats and front storage com-
partment. (See pages 2-4 and 2-5 for
front and rear seat, and 2-15 for front
storage compartment.)
3. Check the fuel and oil levels in the tanks
and replenish if necessary. (See pages
3-3 and 3-4 for filling instructions.)
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4-9
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EJU01355
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.
(
) 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
4-14
Lubrication points Lubricate
4-15
Intermediate housing Lubricate❍
*1
*2
*2 4-16
Fuel system Inspect❍❍
4-10
Fuel filter Check, clean, replace❍❍
4-11
Fuel tank Clean❍
4-11
Oil injection system Inspect, clean❍❍
—
Carburetor setting Inspect, adjust❍❍❍
4-20
Trolling speed Inspect, adjust
4-20
Carburetor throttle shaft Inspect❍❍
—
Cooling water passages Flush
*3 4-1
Bilge strainer Clean
—
Impeller Inspect
*4❍❍
—
Jet thrust nozzle angle Inspect
4-13
Throttle lever Check operation
*4 4-13
Throttle cable Inspect, adjust
4-13
Choke knob Check operation
*4 4-17
Choke cable Inspect, adjust❍❍
4-17
Stern drain plugs Inspect, replace
*4❍❍
3-7
Battery Inspect
*5❍❍
4-18
Rubber coupling Inspect❍
—
Engine mount Inspect❍
—
Nuts and bolts Inspect❍❍❍
—
*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
UF0M74.book Page 9 Wednesday, July 31, 2002 2:45 PM