
2-2
E
1Fuel tank filler cap
2Rope holes
3Intake grate
Prevents debris from getting into the jet pump.
4Speed sensor
5Cleat
Use to attach a towrope for pulling water-skier,
or a rope for mooring the watercraft.
6Handgrip
Use for support when boarding the watercraft
or when seated facing rearward and acting as
a spotter for a water-skier.7Reverse gate
Controls direction of jet thrust when in reverse.
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.
0Ride plate

3-2
E
CAUTION:
Use only fresh gasoline that has been
stored in clean containers.
Gasohol
There are two types of gasohol: gasohol
containing ethanol and that containing meth-
anol.
Gasohol containing ethanol can be used
if ethanol content does not exceed 10 % and
the fuel meets minimum octane ratings.
Gasohol containing methanol is not rec-
ommended by Yamaha because it can
cause fuel system damage or engine perfor-
mance problems.Recommended gasoline:
Regular unleaded gasoline with
a minimum octane rating of
86 (Pump octane number) = (R+M)/2
90 (Research octane number)

E
4
EJU00515
MAINTENANCE AND
CARE
Storage....................................................... 4-1
Flushing the cooling system ................... 4-1
Lubrication............................................... 4-3
Fuel system............................................. 4-3
Battery ..................................................... 4-4
Cleaning the watercraft........................... 4-5
Maintenance and adjustments............... 4-6
Owner’s/Operator’s Manual and tool
kit ............................................................. 4-7
Periodic maintenance chart .................... 4-8
Inspecting the fuel system ...................... 4-9
Inspecting the oil injection system........ 4-11
Inspecting the steering cable................ 4-12
Inspecting the shift cable ...................... 4-12
Inspecting and adjusting the throttle
cable ...................................................... 4-12
Inspecting the QSTS mechanism ........ 4-13
Cleaning and adjusting the spark
plugs ...................................................... 4-14
Lubrication points .................................. 4-15
Adjusting the choke cable..................... 4-18
Inspecting the battery ........................... 4-19
Adjusting the carburetor ....................... 4-21
Replacing the fuse ................................ 4-22
Bleeding the oil injection pump............. 4-22
Specifications......................................... 4-23

4-9
E
EJU00537
Inspecting the fuel system
WARNING
Gasoline and its vapors are highly flam-
mable and explosive.
Check the fuel system for leaks, cracks,
or malfunctions. If any problem is found, do
the necessary repair or replacement as
required. If repair is necessary, consult a
Yamaha dealer.
Check:
●Carburetor for leakage.
●Fuel pump for malfunction or leakage.
●Fuel tank for water or dirt.
●Fuel tank for damage, cracks or leakage.
●Fuel hose joint for leakage.
●Fuel hose for cracks or other damage.
●Fuel filter for leakage.
●Fuel cock for leakage.
●Air vent check valve for leakage.
●Fuel tank filler cap for damage.
WARNING
Failure to check for and repair any fuel
leakage may result in fire or explosion.

4-23
E
EJU00588
Specifications
MODEL
ITEMUnit XLT1200
WATERCRAFT CAPACITY
Maximum people on board Number of people 3
Maximum load capacity kg (lb) 240 (530)
DIMENSIONS
Length mm (in) 3,160 (125)
Width mm (in) 1,220 (48)
Height mm (in) 1,130 (45)
Dry weight kg (lb) 364 (803)
PERFORMANCE
Maximum output kW (PS) @ r/min 114 (155)@ 7,000
Maximum fuel consumption L/h (US gal/h, Imp gal/h) 64 (17, 14)
Cruising range at full throttle hr. 1.09
Trolling speed r/min 1,300–1,400
ENGINE
Engine type 2-stroke, L3
Engine displacement
cm
3 (cu in)1,176 (71.8)
Bore & stroke mm (in) 80.0 ×
78.0 (3.15 ×
3.07)
Compression ratio 5.9:1
Lubrication system Variable oil injection
Cooling system Water cooled
Starting system Electric starter
Ignition system Digital CDI
Spark plug BR8ES-11 (NGK)
Spark plug gap mm (in) 1.0–1.1 (0.039–0.043)
Battery capacity V-AH 12-19
Charging system Flywheel magneto
DRIVE UNIT
Propulsion system Jet pump
Jet pump type Axial flow, single stage
Impeller rotation Counterclockwise (viewed from rear)
Transmission Direct drive from engine
Jet thrust nozzle horizontal angle Degree 24 + 24
Jet thrust nozzle trim angle Degree -7, -2, 3, 8, 13
FUEL AND OIL
Recommended fuel Regular unleaded gasoline
Minimum octane rating PON
RON86
90
Recommended engine oil YAMALUBE 2-W, or an equivalent NMMA-
certified TC-W3 marine oil
Fuel tank capacity
Total L (US gal, Imp gal) 70 (18.5, 15.5)
Reserve L (US gal, Imp gal) 12 (3.2, 2.7)
Oil tank capacity L (US gal, Imp gal) 5.5 (1.5, 1.3)

6-1
E
EJU00609
Index
2-stroke engine oil ................................... 3-3
A
Adjusting the carburetor ........................ 4-21
Adjusting the choke cable ..................... 4-18
Adjusting the trolling speed ................... 4-21
B
Battery .............................................. 3-8, 4-4
Battery warning indicator....................... 2-29
Beaching the watercraft ........................ 3-31
Bilge ........................................................ 3-7
Bleeding the oil injection pump ............. 4-22
Boarding alone ...................................... 3-24
Boarding and starting in deep water ..... 3-24
Boarding with passengers ..................... 3-25
Bow down.............................................. 2-16
Bow up .................................................. 2-16
C
Capsized watercraft .............................. 3-26
Caution labels ......................................... 1-6
Choke knob ........................................... 2-10
Cleaning and adjusting the spark
plugs...................................................... 4-14
Cleaning the jet intake and impeller ........ 5-4
Cleaning the watercraft ........................... 4-5
Clock ..................................................... 2-25
Connecting the jumper cables................. 5-6
Cooling water pilot outlet .............. 2-12, 3-13
Cruising limitations .................................. 1-9
D
Docking the watercraft .......................... 3-31
E
Emergency procedures ........................... 5-4
Engine break-in ..................................... 3-14
Engine compartment ............................... 3-6
Engine oil meter .................................... 2-25
Engine overheat warning indicator ........ 2-28
Engine overheat warning system .......... 2-17
Engine serial number .............................. 1-1
Engine shut-off cord (lanyard) ............... 3-12
Engine shut-off switch ........................... 2-10Engine stop switch ................................ 2-10
Enjoy your watercraft responsibly ......... 1-16
F
Filling the fuel tank .................................. 3-3
Filling the oil tank .................................... 3-4
Fire extinguisher ...................................... 3-9
Flushing the cooling system .................... 4-1
Front seat ................................................ 2-6
Front storage compartment ................... 2-30
Fuel and oil.............................................. 3-1
Fuel and oil systems ............................... 3-6
Fuel cock knob ........................................ 2-9
Fuel filter ............................................... 4-10
Fuel meter ............................................. 2-24
Fuel system ............................................. 4-3
Fuel tank ............................................... 4-10
Fuel tank filler cap ................................... 2-8
Fuel warning indicator ........................... 2-27
G
Gasohol ................................................... 3-2
Gasoline .................................................. 3-1
Getting to know your watercraft ............ 3-20
Glove compartment ............................... 2-31
H
Handgrip ................................................ 2-19
Hazard information ................................ 1-12
Hood........................................................ 2-7
Hour meter ............................................ 2-26
Hull Identification Number (HIN).............. 1-1
I
Identification numbers ............................. 1-1
Important labels ....................................... 1-2
Inspecting and adjusting the throttle
cable...................................................... 4-12
Inspecting the battery ............................ 4-19
Inspecting the fuel system ....................... 4-9
Inspecting the oil injection system ......... 4-11
Inspecting the QSTS mechanism .......... 4-13
Inspecting the shift cable ....................... 4-12
Inspecting the steering cable................ 4-12
J
Jet unit................................................... 3-12
Jumping the battery ................................. 5-5