2006 YAMAHA SUPERJET battery

2-2
E
1Fire extinguisher container
Use to store the fire extinguisher.
2Fuel cock knob
Use to select either normal or reserve fuel flow
from the fuel tank to the carburetors, or to shut
off fuel flow.
3Choke knob
Use to start a cold engine.
4Clip
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.
5Start switch
Push to start the engine.
6Throttle lever
Use to accelerate and decelerate.
7Engine shut-off switch
Remove the clip to stop the engine and dis-
able it from starting.8Engine stop switch
Push to stop the engine normally.
9Engine shut-off cord (lanyard)
Attach to wrist so that the engine stops if the
operator falls off the watercraft.
0Bow
AFuel tank
BBattery
CSilencer
Prevents water from getting into the engine
and reduces air intake noise.
DSpark plugs/Spark plug caps
EMuffler
FWater separator
Traps water from the breather hose to the fuel
tank.
GFuel filter
HFlush hose connector
Use to flush the engine cooling water pas-
sages.
IElectrical box
Protects electrical components from water.
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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 compar tment Remove the hood to ventilate the engine com-
partment. Check for fuel vapors and loose elec-
trical connections.3-6
Bilge Check for water and fuel and remove if neces-
sary.3-8
Throttle lever Check that the throttle lever springs back
smoothly.3-10
Steering system Check for proper operation. 3-10
Fuel Check fuel level and add if necessary.
Check the hoses and tank for leakage.3-7
Water separator Check for water and drain if necessary. 3-7
Battery Check electrolyte level and battery condition. 3-8
Hood Check that the hood latches are properly
secured.2-3
Hull Check the hull for cracks or other damage. 3-6
Jet unit Check for debris and remove if necessary. 3-11
Fire extinguisher Check condition and replace if necessary. 3-9
Engine shut-off cord Check condition and replace if frayed or broken. 3-11
Switches Check the start switch, engine stop switch, and
engine shut-off switch for proper operation.3-12
Cooling water pilot outlet Check that water is discharged while the engine
is running and the watercraft is in the water.3-12
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3-8
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EJU01280
Bilge
Check for moisture and fuel residue in the
bilge.
Excessive water in the bilge can splash
into the carburetor and engine which could
cause engine damage.
EJU19690
Battery
Check the battery condition and the elec-
trolyte level.
Check that the battery leads are tightened
securely and there is no corrosion on the
battery terminals.
WARNING@
The battery must always be fully
charged and in good condition. Loss
of battery power may leave you
stranded. Never operate the watercraft
if the battery does not have sufficient
power to start the engine or if it shows
any other signs of decreased power.

Be sure to connect the breather hose
to the battery. Fire or explosion could
result if the breather hose is damaged,
obstructed, or not connected properly.
@
Make sure that the battery is securely
held in place.
1
Positive (+): Red lead
2
Negative (–): Black lead
3
Breather hose
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3-17
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6. Release the start switch as soon as the
engine starts to run.
CAUTION:@
Never push the start switch while the
engine is running.

Do not operate the start switch for
more than 5 seconds, otherwise the
battery will be discharged and the
engine will not start. Also, the starter
motor may be damaged. If the engine
does not start in 5 seconds, release
the start switch, wait 15 seconds, and
try again.
@
7. After the engine has warmed up, push
the choke knob in to its original position.
NOTE:@ If the choke knob is left pulled out, the
engine will stall.
@
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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
Inspecting the jet thrust nozzle
angle ..................................................... 4-12
Inspecting and adjusting the throttle
cable ..................................................... 4-12
Cleaning and adjusting the spark
plugs ..................................................... 4-13
Lubrication points ................................. 4-14
Adjusting the choke cable .................... 4-16
Inspecting the battery .......................... 4-17
Adjusting the carburetor ...................... 4-19
Replacing the fuse ............................... 4-20
Adjusting the steering friction .............. 4-20
Adjusting the jet thrust nozzle angle ... 4-21
Specifications ........................................ 4-23
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4-5
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To drain the fuel system:
1. Place the fuel cock knob in the “OFF”
position.
2. Drain the fuel tank using a siphon.
EJU19700
Battery
If the watercraft will not be used for more
than a month, disconnect the negative (–)
lead first, then the positive (+) lead and
breather hose, and then remove the battery
from the watercraft.
Clean the battery casing using fresh
water.
If the battery terminals are dirty or cor-
roded, clean them with a wire brush.
Fully charge the battery, and then store it
in a cool, dark place.
Apply Yamaha marine grease or Yamaha
grease A to the battery terminals.
Check the battery at least every 2 months
and fully charge it if necessary.
WARNING@ Be sure to connect the breather hose to
the battery. Fire or explosion could result
if the breather hose is damaged,
obstructed, or not connected properly.
@
CAUTION:@ The battery may not be usable again if
you store it for a long period without
charging it. Charge the battery periodi-
cally.
@
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4-6
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NOTE:@ The condition of the battery can be known
by checking the specific gravity of the elec-
trolyte. However, you can also know the con-
dition of the battery by measuring the
voltage at both battery terminals. Charge
the battery if the voltage is less than
12 volts.
It is recommended to have a Yamaha dealer
check the specific gravity and to charge the
battery. If you maintain the battery yourself,
be sure to read and follow the instructions
provided with the battery tester and charger
you use.
@
EJU01300
Cleaning the watercraft
Clean the watercraft before storing it for a
long period.
1. Wash down the hull, handlebars, and
drive unit with fresh water.
2. Rinse the engine and bilge area with
fresh water. Drain off all water and wipe
up remaining moisture with clean, dry
rags.
3. Spray the engine’s exterior with a rust
inhibitor and lubricant.
4. Wax the hull with a non-abrasive wax.
5. Wipe all vinyl and rubber components,
such as the engine compartment seals,
with a vinyl protectant.
6. Do not use protectant on the riding tray,
because it will make it slippery. Specific gravity (for reference):
1.28 at 20 °C (68 °F)
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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.
*1: Grease quantity: 20.0–22.0 cm3 (0.68–0.74 oz)
*2: Grease quantity: 3.0–5.0 cm3 (0.10–0.17 oz)
*3: After every use
(
) This mark indicates maintenance that you may do yourself.
(
❍) This mark indicates work to be done by a Yamaha dealer.
MAINTENANCE INTERVAL INITIALTHEREAF-
TER EVERYPA G E
10
hours50
hours100
hours 100
hours 200
hours
ITEM
6
months12
months12
months24
months
Spark plug Inspect, clean, adjust




4-13
Lubrication points Lubricate


4-14
Intermediate housing Lubricate❍
*1

*2

*2 4-16
Fuel system Inspect❍❍
4-10
Fuel filter Inspect, clean, replace❍❍
4-11
Fuel tank Inspect, clean❍
4-11
Carburetor setting Inspect, adjust❍❍❍
4-19
Trolling speed Inspect, adjust


4-19
Carburetor throttle shaft Inspect❍❍
—
Cooling water passages Flush

*34-1
Bilge strainer Clean❍❍
—
Impeller Inspect❍❍
—
Jet thrust nozzle angle Inspect, adjust

/❍

/❍
4-12
Steering pivot Inspect❍❍❍
—
Steering friction Inspect, adjust



4-20
Throttle cable Inspect, adjust❍❍❍
4-12
Choke cable Inspect, adjust ❍❍
4-16
Battery Inspect❍❍
4-17
Rubber coupling Inspect❍
—
Engine mount Inspect❍
—
Nuts and bolts Inspect❍❍❍
—
E_F1N-70.book Page 9 Tuesday, April 26, 2005 12:03 PM