2012 YAMAHA SUPERJET battery

Table of contents
After removing the watercraft
from the water .............................. 48
Care and storage ............................. 49
Post-operation care ...................... 49
Flushing the cooling water
passages ...................................... 49
Cleaning the watercraft ................... 50
Battery care ..................................... 50
Long-term storage ........................ 53
Cleaning .......................................... 53
Lubrication ....................................... 53
Rustproofing .................................... 54
Maintenance..................................... 55
Maintenance ................................. 55
Tool kit ............................................. 55
Adjusting the steering friction .......... 55
Adjusting the jet thrust nozzle
angle ............................................ 56
Periodic maintenance chart ............. 58
Checking the spark plugs ................ 59
Lubrication points ............................ 60
Checking the fuel filter ..................... 60
Adjusting the choke cable ............... 60
Adjusting the carburetor .................. 61
Specifications .................................. 62
Specifications ................................ 62
Trouble recovery ............................. 63
Troubleshooting ........................... 63
Troubleshooting chart ...................... 63
Emergency procedures ................ 65
Cleaning the jet intake and
impeller ........................................ 65
Jumping the battery ......................... 66
Replacing the fuse ........................... 66
Towing the watercraft ...................... 67
Submerged watercraft ..................... 67
UF2F74E0.book Page 2 Monday, May 30, 2011 5:23 PM

Description
17
1Fire extinguisher container
2Fuel cock knob
3Choke knob
4Clip
5Start switch
6Throttle lever
7Engine shut-off cord (lanyard)
8Engine stop switch
9Engine shut-off switch
10Fuel tank
11Battery
12Silencer
13Spark plug/Spark plug cap
14Water separator
15Muffler
16Fuel filter
17Flushing hose connector
18Electrical box
UF2F74E0.book Page 17 Tuesday, May 24, 2011 8:42 AM

Control function operation
18
EJU31024
Watercraft control functions EJU31152Engine stop switch“”
The engine stop switch (red button) stops the
engine when the switch is pushed.
EJU31163Engine shut-off switch“”
The engine shut-off switch automatically
stops the engine when the clip, on the end of
the engine shut-off cord (lanyard), is removed
from the switch, such as if the operator falls off
the watercraft.
Insert the clip under the engine shut-off switch
before starting the engine.
When the engine is not running, remove the
clip from the engine shut-off switch to preventaccidental starting or unauthorized operation
by children or others.
EJU41050Start switch“”
NOTICE
ECJ01360
Do not run the engine for more than 15
seconds on land without supplying water,
otherwise the engine could overheat.
The start switch (green button) starts the en-
gine when the switch is pushed.
Release the start switch as soon as the en-
gine starts to run. If the engine does not start
in 5 seconds, release the start switch, wait 15
seconds, and then try again. NOTICE: 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
1Engine stop switch
1Engine shut-off switch
2Clip
3Engine shut-off cord (lanyard)
1
STOP
312
UF2F74E0.book Page 18 Tuesday, May 24, 2011 8:42 AM

Pre-operation checks
32
EJU31981
WARNING
EWJ00411
Failure to inspect or maintain the watercraft properly increases the possibility of an ac-
cident or damage to the watercraft. Do not operate the watercraft if you find any prob-
lem. If a problem cannot be corrected by the procedures provided in this manual, have
the watercraft inspected by a Yamaha dealer.
EJU41232Pre-operation checklist
Before using this watercraft, be sure to perform the checks in the following checklist.
ITEM ROUTINE PAGE
PRE-LAUNCH CHECKS
Engine compartmentVentilate the engine compartment.
Check inside the engine compartment for damage.34
Fuel systemCheck the fuel system for leakage.
Check the fuel level in the fuel tank.34
Water separatorCheck the water separator for water. 35
Engine unitCheck the exterior of the engine unit for damage. 35
Bilge waterCheck the engine compartment for bilge water. 35
BatteryCheck the battery connections and electrolyte level. 35
Steering systemCheck the steering system for proper operation. 35
Throttle leverCheck the throttle lever for proper operation.
Check the throttle lever free play.36
Engine shut-off cord (lan-
yard)Check the engine shut-off cord (lanyard) for dam-
age.37
SwitchesCheck the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.37
Storage pouchCheck the storage pouch for damage and water.
Check that the storage pouch is securely installed.37
Fire extinguisher containerCheck the fire extinguisher container for damage. 38
Fire extinguisherCheck the condition of the fire extinguisher. 38
Safety equipmentCheck that safety equipment meeting the applicable
regulations is on board.38
Hull and deckCheck the hull and deck for damage. 38
Jet intakeCheck the jet intake for damage and clogging. 38
HoodCheck that the hood is securely closed. 38
POST-LAUNCH CHECKS
Cooling water pilot outletCheck that water is discharged from the cooling wa-
ter pilot outlet while the engine is running.38
UF2F74E0.book Page 32 Tuesday, May 24, 2011 8:42 AM

Pre-operation checks
35
Add fuel if necessary. (See page 28 for infor-
mation on filling the fuel tank.)
EJU32423Water separator check
Make sure that no water has collected in the
water separator. If water has collected in the
water separator, drain it. (See page 21 for in-
formation on draining the water separator.)
EJU40181Engine unit check
Check the exterior of the engine unit for dam-
age or other problem.
EJU41011Bilge water check
Make sure that no bilge water has collected in
the engine compartment. If bilge water has
collected in the engine compartment, wipe it
up with a dry cloth. NOTICE: Excessive wa-
ter in the engine compartment can splash
into the engine, which can result in severe
damage.
[ECJ00341]
EJU32484
Battery checks
Make sure that the battery terminals and
breather hose are not damaged and that the
battery leads and breather hose are connect-
ed properly. WARNING! Fire or explosion
could result if the breather hose is dam-aged, obstructed, or not connected prop-
erly.
[EWJ00451]
Make sure that the electrolyte level is be-
tween the minimum and maximum level
marks. WARNING! Never operate the wa-
tercraft if the battery does not have suffi-
cient power to start the engine or if it
shows any other signs of decreased pow-
er. Loss of battery power may leave you
stranded.
[EWJ01240]
Make sure that the battery is securely held in
place.
EJU32613Steering system checks
Turn the handlebars to the right and left sev-
eral times to make sure that operation is
smooth and unrestricted throughout the
1Water separator
1Positive (+) battery terminal: Red lead
2Negative (–) battery terminal: Black lead
3Breather hose
1Maximum level mark
2Minimum level mark
UF2F74E0.book Page 35 Tuesday, May 24, 2011 8:42 AM

Care and storage
50
flows out continually from the cooling wa-
ter pilot outlet.
(7) 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 perform
the procedure again from step 6.
NOTICE: Do not supply water to the
cooling water passages when the en-
gine is not running. The water could
flow back through the muffler into the
engine, causing severe engine dam-
age.
[ECJ00122]
(8) Turn the water supply off.
(9) Discharge the remaining water out of the
cooling water passages by alternately
squeezing and releasing the throttle lever
quickly for 10 to 15 seconds.
(10) Stop the engine.
(11) Remove the garden hose adapter, and
then securely install the flushing hose
connector cap by tightening it until it
stops.
(12) Securely install the hood in its original po-
sition.
EJU40742Cleaning the watercraft
(1) Remove the hood. (See page 23 for hood
removal and installation procedures.)
(2) Rinse the engine and engine compart-
ment with a small amount of water.
NOTICE: Do not use high-pressurewater when rinsing the engine or en-
gine compartment as severe engine
damage could result.
[ECJ00571]
(3) Wipe the engine and engine compart-
ment with a dry cloth.
(4) Wash down the hull, deck, and jet pump
with fresh water.
(5) Wipe the hull, deck, and jet pump with a
dry cloth.
(6) Wipe all vinyl and rubber components,
such as the engine compartment seals,
with a vinyl protectant.
(7) To minimize corrosion, spray metallic
parts of the hull, deck, and engine with a
rust inhibitor.
(8) Allow the engine compartment to air dry
completely before installing the hood.
(9) Securely install the hood in its original po-
sition.
EJU33686Battery care
If the watercraft will not be used for more than
a month, remove the battery from the water-
craft, check it, and then store it in a cool, dry
place.
WARNING
EWJ00791
Battery electrolyte is poisonous and dan-
gerous, causing severe burns, etc. Elec-
trolyte contains sulfuric acid. Avoid
contact with skin, eyes, or clothing.
Antidotes
External: Flush with water.
Internal: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten
egg, or vegetable oil. Call a physician im-
mediately.
Eyes: Flush with water for 15 minutes and
get prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flames, cigarettes, etc., well away.
If using or charging the battery in an en-
UF2F74E0.book Page 50 Tuesday, May 24, 2011 8:42 AM

Care and storage
51
closed space, make sure that it is well ven-
tilated. Always shield your eyes when
working near batteries.
Keep out of the reach of children.
To remove the battery:
(1) Disconnect the negative (–) battery lead.
(2) Disconnect the positive (+) battery lead.
(3) Disconnect the breather hose.
(4) Unhook the battery bands, and then re-
move the battery from the watercraft.
Checking the battery

Make sure that the battery case is not dam-
aged.

Make sure that the battery terminals are not
corroded or damaged.

Make sure that the breather hose is not
clogged or damaged.
Checking the electrolyte level
Make sure that the electrolyte level is be-
tween the maximum and minimum level
marks.
If the electrolyte level is low, add distilled wa-
ter to raise it to the specified level. NOTICE:
Use only distilled water for replenishingthe battery, otherwise battery life could be
shortened.
[ECJ00241]
If distilled water was added, check the battery
voltage.
It is recommended to have a Yamaha dealer
check the battery voltage and charge the bat-
tery. If you charge the battery yourself, be
sure to read and follow the instructions provid-
ed with the battery tester and charger you
use. NOTICE: Do not attempt to charge a
battery hastily. Battery life could be short-
ened.
[ECJ00251]
Checking the battery bands
Make sure that the battery bands are not
damaged.
To store the battery:
(1) Clean the battery case using fresh water.
1Positive (+) battery terminal: Red lead
2Battery band
3Negative (–) battery terminal: Black lead
4Breather hose
1Maximum level mark
2Minimum level mark
1Battery band
UF2F74E0.book Page 51 Tuesday, May 24, 2011 8:42 AM

Care and storage
52
(2) If the battery terminals are dirty or corrod-
ed, clean them using a wire brush.
(3) Apply Yamaha Marine Grease or
Yamaha Grease A to the battery termi-
nals.
(4) Store the battery in a cool, dry place.
NOTICE: Storing the battery in an un-
charged condition can cause perma-
nent battery damage. Check the
battery periodically.
[ECJ00102]
To install the battery:
(1) Place the battery in the battery compart-
ment and hook the battery bands onto the
holders.
(2) Connect the positive (+) battery lead (red)
to the positive (+) battery terminal.
NOTICE: Reversal of the battery leads
will damage the electrical parts.
[ECJ00261]
(3) Connect the negative (–) battery lead
(black) to the negative (–) battery termi-
nal.
(4) Connect the breather hose to the battery.
WARNING! Fire or explosion could re-
sult if the breather hose is damaged,
obstructed, or not connected proper-
ly.
[EWJ00451]
(5) Make sure that the battery is securely
held in place.
1Battery terminal
Recommended water-resistant grease:
Yamaha Marine Grease/Yamaha
Grease A
UF2F74E0.book Page 52 Tuesday, May 24, 2011 8:42 AM