2-3
E
1Silencer
Prevents water from getting into the engine
and reduces air intake noise.
2Spark plugs/caps
3Electrical box
Protects electrical components from water.
4Spark plug lead
5Muffler6Fuel tank
7Oil tank
8Fuel filter
9Flush hose connector
Use to flush the engine cooling water pas-
sages.
0Battery
E_F0M-72-2.fm Page 3 Thursday, July 27, 2000 9:50 AM
2-12
E
EJU00367a
Handgrip
The handgrip 1 provides a handhold for
boarding the watercraft and for a spotter
when facing rearward.
CAUTION:
Do not use to tow objects, lift watercraft,
or attach tie downs, otherwise damage
could occur.
EJU00371
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.
E_F0M-72-2.fm Page 12 Thursday, July 27, 2000 9:50 AM
4-8
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EJU00536
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.
*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)
MAINTENANCE INTERVAL INITIALTHEREAFTER
EVERYPA G E
10
hours50
hours100
hours100
hours200
hours
ITEM
3
months6
months6
months12
months
Spark plug Inspect, clean, adjust●●●●
4-13
Lubrication points Lubricate●●
4-14
Intermediate housing Lubricate❍
*1●
*2●
*2 4-16
Fuel system Inspect❍❍
4-9
Fuel filter Check, replace❍❍
4-10
Fuel tank Clean❍
4-10
Oil injection system Inspect, clean❍❍
—
Trolling speed Adjust●●
4-19
Carburetor throttle shaft Inspect❍❍
4-19
Cooling water passages Flush
●
(after
ever y
use)4-1
Bilge strainer Clean●●●
—
Impeller Inspect●●●
—
Steering cable Inspect●●
4-15
Throttle cable Inspect, adjust●●
4-14
Choke cable Inspect, adjust●●
4-16
Stern drain plugs Inspect, replace●
3-7
Battery Inspect
●(inspect
fluid level
before
ever y
use)
4-17
Rubber coupling Inspect❍
—
Nuts and bolts Tighten❍❍❍
—
E_F0M-72-4.fm Page 8 Thursday, July 27, 2000 9:53 AM
4-11
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EJU00544
Inspecting the oil injection
system
Check the oil injection system for leakage,
cracks, or malfunctions. If necessary, have a
Yamaha dealer repair the oil injection sys-
tem.
Check:
●Oil tank for damage, cracks or leakage.
●Oil tank for water or dirt.
●Oil hose and joint for damage or cracks.
●Oil filter for dirt.
●Oil pump for leakage.
Oil tank
Check the oil tank for leakage or water in
the tank. If water is found in the oil injection
system or if the oil tank needs to be cleaned
have a Yamaha dealer service the water-
craft.
Oil filter
Check the oil filter for dirt and clogs. If the
oil filter is clogged, remove it from the oil
tank together with the oil level sender and
clean it.
E_F0M-72-4.fm Page 11 Thursday, July 27, 2000 9:53 AM
5-2
E
Engine runs irregu-
larly or stallsFuel Empty Refill as soon as
possible3-3
Stale or contaminated Have serviced by
Yamaha dealer4-9
Choke Knob pulled Push fully in 2-8
Fuel filter Clogged or water
pooledHave serviced by
Yamaha dealer4-10
Fuel tank Water or dirt present Have serviced by
Yamaha dealer4-10
Spark plug Fouled or defective Replace 4-13
Incorrect heat range Replace 4-13
Gap incorrect Adjust 4-13
Spark plug cap Loose Connect properly 4-13
Cracked, torn, or dam-
agedReplace
—
Electrical
wiringLoose connection Tighten or connect
properly—
Carburetor Incorrect idle adjust-
mentAdjust idle
4-19
Clogged Have serviced by
Yamaha dealer—
Warning light or
indicator blinksFuel level Empty Refill as soon as possi-
ble3-3
Oil filter clogged Clean 4-11
Wate rcr af t slow or
loses powerCavitation Jet intake clogged Clean 5-3
Impeller damaged or
wornHave serviced by
Yamaha dealer—
Engine over-
heatedJet intake clogged Clean
5-3
Fuel filter Clogged Have serviced by
Yamaha dealer4-10
Spark plug Fouled or defective Replace 4-13
Incorrect heat range Replace 4-13
Gap incorrect Adjust 4-13
Spark plug
capsLoose Connect properly
4-13
Electrical
wiringLoose connection Tighten or connect
properly—
Fuel Stale or contaminated Have serviced by
Yamaha dealer4-10
Bilge Water in bilge Drain 3-7 TROUBLE POSSIBLE CAUSE REMEDY PAGE
E_F0M-72-5.fm Page 2 Thursday, July 27, 2000 9:58 AM
6-1
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EJU00609
Index
2-stroke engine oil ................................... 3-3
A
Adjusting the carburetor ........................ 4-19
Adjusting the choke cable ..................... 4-16
Adjusting the trolling speed ................... 4-19
Approval label of Emission control
certificate ................................................. 1-2
B
Battery .............................................. 3-8, 4-4
Beaching the watercraft ........................ 3-30
Bilge ........................................................ 3-7
Bleeding the oil injection pump ............. 4-20
Boarding alone ...................................... 3-23
Boarding and starting in deep water ..... 3-23
Boarding with passengers ..................... 3-24
C
Capsized watercraft .............................. 3-25
Caution labels ......................................... 1-7
Choke knob ............................................. 2-8
Cleaning and adjusting the spark
plugs...................................................... 4-13
Cleaning the jet intake and impeller ........ 5-3
Cleaning the watercraft ........................... 4-5
Connecting the jumper cables................. 5-5
Cooling water pilot outlet .............. 2-10, 3-12
Cruising limitations ................................ 1-10
D
Docking the watercraft .......................... 3-30
E
Emergency procedures ........................... 5-3
Emission control information ................... 1-2
Engine break-in ..................................... 3-13
Engine compartment ............................... 3-6
Engine overheat warning system .......... 2-11
Engine serial number .............................. 1-1
Engine shut-off cord (lanyard) ............... 3-11
Engine shut-off switch ............................. 2-8
Engine stop switch .................................. 2-8
Enjoy your watercraft responsibly ......... 1-17F
Filling the fuel tank .................................. 3-3
Filling the oil tank .................................... 3-4
Fire extinguisher ...................................... 3-9
Flushing the cooling system .................... 4-1
Front seat ................................................ 2-5
Front storage compartment ................... 2-13
Fuel and oil.............................................. 3-1
Fuel and oil systems ............................... 3-6
Fuel cock knob ........................................ 2-7
Fuel filter ............................................... 4-10
Fuel system ............................................. 4-4
Fuel tank ............................................... 4-10
Fuel tank filler cap ................................... 2-6
G
Gasohol ................................................... 3-2
Gasoline .................................................. 3-1
Getting to know your watercraft ............ 3-19
Glove compartment ............................... 2-14
H
Handgrip ................................................ 2-12
Hazard information ................................ 1-13
Hood........................................................ 2-6
Hull Identification Number (HIN).............. 1-1
I
Identification numbers ............................. 1-1
Important labels ....................................... 1-3
Inspecting and adjusting the throttle
cable...................................................... 4-12
Inspecting the battery ............................ 4-17
Inspecting the fuel system ....................... 4-9
Inspecting the oil injection system ......... 4-11
Inspecting the steering cable................ 4-12
J
Jet unit................................................... 3-11
Jumping the battery ................................. 5-4
L
Label location .......................................... 1-3
Learning to operate your watercraft ...... 3-19
Leaving the watercraft ........................... 3-18
Limitations on who may operate the
watercraft ................................................ 1-9
Location of main components ................. 2-1
E_F0M-72IX.fm Page 1 Thursday, July 27, 2000 9:58 AM
6-2
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Lubrication............................................... 4-3
Lubrication points .................................. 4-14
M
Maintenance and adjustments ................ 4-6
O
Oil filter .................................................. 4-11
Oil level warning lamp ........................... 2-12
Oil tank .................................................. 4-11
Oil tank filler cap...................................... 2-6
Operating your watercraft...................... 3-19
Operation .............................................. 3-13
Operation of controls and other
functions .................................................. 2-4
Operation requirements ........................ 1-11
Other labels ............................................. 1-8
Owner’s/Operator’s Manual and tool
kit............................................................. 4-7
P
Periodic maintenance chart..................... 4-8
Post-operation checks........................... 3-31
Pre-operation check list........................... 3-5
Pre-operation check points ..................... 3-6
Pre-operation checks .............................. 3-5
Primary Identification (PRI-ID) number ... 1-1
R
Rear seat................................................. 2-4
Replacing the fuse ................................ 4-20
Riding watercraft with passengers ........ 3-20
Rough water operation .......................... 3-30
S
Safe boating rules ................................. 1-16
Safety information ................................... 1-9
Seat storage compartment .................... 2-14
Specifications ........................................ 4-21
Starting and boarding in shallow
water ..................................................... 3-22
Starting from a dock .............................. 3-22
Starting the engine ................................ 3-15
Starting the watercraft ........................... 3-21
Start switch.............................................. 2-9
Steering system ........................... 2-10, 3-10
Stopping the engine .............................. 3-18
Stopping the watercraft ......................... 3-29Storage.................................................... 4-1
Storage compartments .......................... 2-13
Submerged watercraft ............................. 5-7
Switches ................................................ 3-12
T
Throttle .................................................. 3-10
Throttle lever ........................................... 2-9
Towing the watercraft .............................. 5-6
Transporting .......................................... 3-33
Troubleshooting ...................................... 5-1
Troubleshooting chart ............................. 5-1
Turning the watercraft ........................... 3-27
W
Warning labels ........................................ 1-4
Watercraft characteristics ...................... 1-14
Water separator ...................................... 3-7
Water-skiing .......................................... 1-15
E_F0M-72IX.fm Page 2 Thursday, July 27, 2000 9:58 AM