
Table of contents
Learning to operate your watercraft ......................................  59
Riding position .................................  60
Launching the watercraft .................  60
Starting the engine on water ............  60
Stopping the engine .........................  61
Leaving the watercraft......................  61
Operating the watercraft ..................  61
Turning the watercraft ......................  62
Stopping the watercraft ...................  63
Operating the watercraft in reverse  or neutral  ......................................  64
Boarding the watercraft ...................  65
Starting off........................................  67
Capsized watercraft .........................  68
Beaching and docking the  watercraft ......................................  69
Operating in weeded areas ..............  69
After removing the watercraft from  the water .......................................  70
Care and storage............................. 71Post-operation care ......................  71
Flushing the cooling water 
passages.......................................  71
Cleaning the watercraft ....................  72
Battery care ......................................  72
Long-term storage ........................  74
Cleaning ...........................................  74
Lubrication .......................................  74
Rustproofing.....................................  75
Maintenance .................................... 77 Maintenance..................................  77
Periodic maintenance chart .............  78
Engine oil and oil filter ......................  80
Specifications .................................. 81Specifications................................  81
Trouble recovery ............................. 82 Troubleshooting ............................  82
Troubleshooting chart ......................  82
Emergency procedures ................  85
Cleaning the jet intake and 
impeller .........................................  85
Raising the reverse gate  ..................  86
Jumping the battery .........................  86
Towing the watercraft.......................  87
Submerged watercraft .....................  87
Index................................................. 89
UF4L72E0.book  Page 2  Thursday, June 18, 2020  1:29 PM 

Description
23
Engine compartment
8
3
1011
4
2
1
56
7
9
1 Water separator (page 26)
2 Fuel tank
3 Air filter case
4 Flushing hose connector (page 71)
5 Oil tank filler cap/Dipstick (page 44)
6 Oil tank
7 Battery (page 53)
8 Fuse box 9
Spark plug/Ignition coil
10 Fire extinguisher holder (page 41)
11 Seat storage compartment (page 40)
UF4L72E0.book  Page 23  Thursday, June 18, 2020  1:29 PM 

Maintenance
78
EJU43101Periodic maintenance chart
The periodic maintenance chart gives general guidelines for periodic maintenance. Have a
Yamaha dealer perform the checks in the following chart. However, maintenance may need to be performed more frequently depending on your operating conditions. If you have any
questions, consult a Yamaha dealer.
This “ √” mark indicates items to be checked and serviced by a Yamaha dealer.
Item OperationInitial Thereafter every
Page
10 hours 50 hours 
or 12 
months  *1 100 
hours or  12 
months  *1 200 
hours or  24 
months  *1
Fuel line Check fuel hoses and 
clamps
√
—
Fuel filler cap/Wa-
ter separator Check O-rings for cracks 
and deformation
√
—
Fuel tank Check installation and 
straps
√
—
Water inlet strainer Check for clogs and dam-
age
√
—
Cooling water hos-
es Check for damage and 
leakage, and check 
clamps
√
—
Engine oil Replace √√ 80
Oil filter Replace √80
Spark plugs Check √√ —
Battery Check state of charge, 
terminals and bands
√
—
Battery leads Check terminals √—
Steering master Check operation and for 
looseness
√√
—
Steering cable Check exterior and con-
nections, and lubricate
√
—
Shift rod and re-
verse gate  Check exterior and con-
nections, and lubricate
√
—
Air filter element Check for damage and 
dirt
√
—
Air intake hoses Check for damage, and 
check clamps
√
—
Throttle body Lubricate throttle valve √—
Exhaust system Check for exhaust leak-
age, and check hoses and 
clamps √
—
Breather hose Check
  breather hose and 
clamps √
—
UF4L72E0.book  Page 78  Thursday, June 18, 2020  1:29 PM 

Maintenance
80
EJU36943Engine oil and oil filterEWJ00341
Engine oil is extremely hot immediately af-
ter the engine is turned off. Coming in con-
tact with or getting any engine oil on your
clothes could result in burns.
ECJ00992
Do not run the engine with too much or not
enough oil in the engine, otherwise the en-
gine could be damaged.
It is recommended to have a Yamaha dealer
change the engine oil and the engine oil filter.
However, if you choose to change the oil and
filter on your own, consult a Yamaha dealer.
UF4L72E0.book  Page 80  Thursday, June 18, 2020  1:29 PM 

Specifications
81
EJU45442
Specifications
Watercraft capacity:
Maximum people on board:3 person
Maximum load capacity: 225 kg (496 lb)
Dimensions and weight:
Length:
3.14 m (123.6 in)
Width: 1.13 m (44.5 in)
Height: 1.15 m (45.3 in)
Dry weight: 245 kg (540 lb)
Performance:
Maximum output (according to ISO 8665/SAE 
J1228):
80.9 kW at 8000 r/min
Maximum fuel consumption: 33.1 L/h (8.7 US gal/h, 7.3 Imp.gal/h)
Cruising range at full throttle: 1.51 hour
Trolling speed:
1500  ±100 r/min
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Number of cylinders:
3
Engine displacement: 1049 cm³
Bore  × stroke:
82.0  × 66.2 mm (3.23  × 2.61 in)
Compression ratio:
11.0 : 1
Valve clearance-intake (cold): 0.15–0.22 mm (0.0059–0.0087 in)
Valve clearance-exhaust (cold): 0.26–0.32 mm (0.0102–0.0126 in)
Lubrication system:
Dry sump
Cooling system: Water
Starting system: Electric
Ignition system:
T.C.I. Spark plug (NGK):
CR9EB
Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)
Battery capacity:
12 V, 18 Ah
Battery type: YTX20L-BS
Charging system: Flywheel magneto
Drive unit:
Propulsion system:Jet pump
Jet pump type: Axial flow, single stage
Impeller rotation: Counterclockwise
Jet thrust nozzle angle:
24+24 °
Fuel and oil:
Recommended fuel:Regular unleaded gasoline
Minimum octane rating (PON):
86
Minimum octane rating (RON): 90
Recommended engine oil: YAMALUBE 4W or 4-stroke motor oil
Recommended engine oil type SAE: SAE 10W-30, 10W-40, 20W-40, 20W-50
Recommended engine oil grade API: API SG, SH, SJ, SL
Fuel tank total capacity: 50 L (13.2 US gal, 11.0 Imp.gal)
Engine oil quantity with oil filter replacement:
3.4 L (3.59 US qt, 2.99 Imp.qt)
Engine oil quantity without oil filter replacement: 3.2 L (3.38 US qt, 2.82 Imp.qt)
Engine oil total quantity: 3.7 L (3.91 US qt, 3.26 Imp.qt)
UF4L72E0.book  Page 81  Thursday, June 18, 2020  1:29 PM 

Trouble recovery
84
Watercraft slow or 
loses powerCavitation Jet intake clogged Clean 85
Impeller damaged or 
worn Have serviced by 
Yamaha dealer
85
Engine over-
heat warning Engine speed reduc-
tion control activated Clean jet intake and 
cool engine
34
Oil pressure 
warning Engine speed reduc-
tion control activated Add oil
34
Spark plug Fouled or defective Have serviced by  Yamaha dealer—
Incorrect heat range Have serviced by  Yamaha dealer —
Gap incorrect Have serviced by  Yamaha dealer —
Electrical wir-
ing Loose connection Have serviced by 
Yamaha dealer —
Fuel Stale or contaminat- ed Have serviced by 
Yamaha dealer
—
Air filter Clogged Have serviced by  Yamaha dealer—
Oil buildup Have serviced by  Yamaha dealer —
Throttle lever Faulty Have serviced by  Yamaha dealer—
TROUBLE POSSIBLE CAUSE REMEDY PAGE
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89
Index
A
After removing the watercraft from the water ..................................................... 70
B
Battery care.............................................. 72
Battery checks ......................................... 53
Battery, jumping....................................... 86
Beaching and docking the watercraft ...... 69
Bilge water check..................................... 53
Bilge water, draining ................................ 46
Bilge water, draining on land ................... 46
Bilge water, draining on water ................. 47
Boarding alone ......................................... 65
Boarding and starting  off from a dock ..... 68
Boarding the watercraft ........................... 65
Boarding with passenger(s) ..................... 66
Bow eye ................................................... 38
Bow storage compartment ...................... 38
Builder’s plate ............................................ 2
C
Capsized watercraft ................................. 68
Check engine warning ............................. 35
Cleaning ................................................... 74
Cleaning the watercraft ............................ 72
Cleat ......................................................... 38
Cooling water pilot outlet ......................... 26
Cooling water pilot outlet check .............. 57
Craft Identification Number (CIN)............... 1
Cruising limitations................................... 10
E
Emergency procedures ............................ 85
Engine break-in ........................................ 49
Engine compartment check ..................... 52
Engine idling speed check ....................... 58
Engine oil ................................................. 44
Engine oil and oil filter .............................. 80
Engine oil level check............................... 53
Engine oil requirements ........................... 44
Engine overheat warning ......................... 34
Engine serial number ................................. 1
Engine shut-off cord (lanyard) check ....... 55
Engine shut-off switch ............................. 24
Engine stop switch................................... 24
Engine unit check..................................... 53
Enjoy your watercraft responsibly............ 18 Equipment ................................................ 36
F
Fire extinguisher check ............................ 56
Fire extinguisher holder............................ 41
Fire extinguisher holder checks ............... 56
Flushing the cooling water passages....... 71
Fuel .......................................................... 42
Fuel level check........................................ 52
Fuel level meter ........................................ 33
Fuel level warning..................................... 34
Fuel requirements .................................... 42
Fuel system checks ................................. 52
G
Getting to know your watercraft .............. 59
Glossary, watercraft ................................. 19
Glove compartment ................................. 39
H
Handgrip .................................................. 36
Hazard information................................... 14
Hood check .............................................. 57
Hour meter and voltmeter ........................ 32
Hull and deck check ................................ 56
I
Identification numbers ............................... 1
Information display................................... 31
J
Jet intake and impeller, cleaning.............. 85
Jet intake checks ..................................... 56
Jet thrust nozzle and reverse gate 
check .................................................... 56
Jumper cables, connecting ...................... 86
L
Labels, important ....................................... 4
Labels, other .............................................. 8
Labels, warning .......................................... 5
Launching the watercraft ......................... 60
Learning to operate your watercraft......... 59
Leaving the watercraft.............................. 61
Limitations on who may operate the  watercraft ................................................ 9
Long-term storage ................................... 74
Lubrication ............................................... 74
M
Main components, location of ................. 20
Maintenance............................................. 77
UF4L72E0.book  Page 89  Thursday, June 18, 2020  1:29 PM