2021 YAMAHA FX SVHO engine

Maintenance
91
EJU33769
Maintenance
Periodic checks and lubrication will keep
your watercraft in the safest and most effi-
cient condition possible. Therefore, make
sure to carry out the periodic maintenance.
Safety is an obligation of the watercraft own-
er. Proper maintenance must be carried out
to keep the exhaust emission and sound lev-
els within the regulated limits. The most im-
portant points of watercraft inspection and
lubrication are explained on the following
pages.
See a Yamaha dealer for genuine Yamaha re-
placement parts and optional accessories
designed for your watercraft.
Remember, failures that are the result of the
installation of parts or accessories which are
not qualitatively equivalent to genuine
Yamaha parts are not covered by the limited warranty.
Maintenance, replacement, or repair of
the emission control devices and system
may be performed by any marine SI engine
repair establishment or individual. War-
ranty repair, however, must be performed
at an authorized Yamaha marine dealer-
ship.
EWJ00312
Be sure to turn off the engine when you
perform maintenance unless otherwise
specified. If you are not familiar with ma-
chine servicing, this work should be done
by a Yamaha dealer or other qualified me-
chanic.
EJU42023Removing and installing the engine
cover
The engine cover is removable. To remove the engine cover:
(1) Remove the seats. (See page 49 for seat
removal and installation procedures.)
(2) Remove the engine cover screws.
(3) Lift up the engine cover to remove it.
To install the engine cover:
(1) Place the engine cover in its original po- sition, and then push it down.
(2) Install the engine cover screws.
1 Engine cover screw
1 Engine cover
1
1
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Maintenance
93
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 √√ 95
Oil filter Replace √95
Intermediate hous-
ing Lubricate
√—
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
√
—
Electric trim rod 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
√
—
Thr

ottle body Lubricate throttle valve √—
UF3X72E0.book Page 93 Friday, May 29, 2020 10:09 AM

Maintenance
94
*1: Whichever comes first.
*2: Check every 200 hours.
Perform the pre-operation checks and post-operation checks before performing periodic
maintenance.
Exhaust systemCheck for exhaust leak-
age, and check hoses and
clamps √
—
Breather hose Check breather hose and
clamps
√
—
Impeller Check for bends, dam-
age, and foreign material
√
—
Jet thrust nozzle Check movement, and lu-
bricate
√
—
Jet vacuum bilge Check hoses for clogs
and damage, check
clamps, and clean bilge
strainer
√
—
Stern drain plugs Check O-rings √—
Anode Check for corrosion, and
clean
√
*2 —
Valve clearance Check and adjust √ *2 —
Rubber coupling Check for cracks, inden-
tations, looseness, and
noise √
—
Engine mount Check for damage and
peeling
√
—
Item Operation
Initial Thereafter every
Page
10 hours 50 hours
or 12
months *1 100
hours or 12
months *1 200
hours or 24
months *1
UF3X72E0.book Page 94 Friday, May 29, 2020 10:09 AM

Maintenance
95
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.
UF3X72E0.book Page 95 Friday, May 29, 2020 10:09 AM

Specifications
96
EJU45442
Specifications
Watercraft capacity:
Maximum people on board:3 person
Maximum load capacity: 240 kg (530 lb)
Dimensions and weight:
Length:
3.58 m (140.9 in)
Width: 1.27 m (50.0 in)
Height: 1.23 m (48.4 in)
Dry weight: 371 kg (818 lb) (FX SVHO)
372 kg (820 lb) (FX CRUISER SVHO)
373 kg (822 lb) (FX LIMITED SVHO)
Performance:
Maximum output (according to ISO 8665/SAE
J1228):183.9 kW at 7500 r/min
Maximum fuel consumption: 80.7 L/h (21.3 US gal/h, 17.8 Imp.gal/h)
Cruising range at full throttle:
0.87 hour
Trolling speed: 1250 ±100 r/min
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Number of cylinders: 4
Engine displacement: 1812 cm³
Bore × stroke:
86.0 × 78.0 mm (3.39 × 3.07 in)
Compression ratio: 8.5 : 1
Valve clearance-intake (cold): 0.14–0.23 mm (0.0055–0.0091 in)
Valve clearance-exhaust (cold):
0.36–0.45 mm (0.0142–0.0177 in)
Lubrication system: Wet sump
Cooling system: Water
Starting system:
Electric Ignition system:
T.C.I.
Spark plug (NGK): LFR7A
Spark plug gap:
0.8–0.9 mm (0.031–0.035 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 °
Jet thrust nozzle trim angle: -5, -3, 0, 3, 6 °
Fuel and oil:
Recommended fuel:Premium unleaded gasoline
Minimum octane rating (PON): 91
Minimum octane rating (RON):
95
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: 70 L (18.5 US gal, 15.4 Imp.gal)
Engine oil quantity with oil filter replacement: 3.7 L (3.91 US qt, 3.26 Imp.qt)
Engine oil quantity without oil filter replacement:
3.5 L (3.70 US qt, 3.08 Imp.qt)
Engine oil total quantity: 5.3 L (5.60 US qt, 4.66 Imp.qt)
UF3X72E0.book Page 96 Friday, May 29, 2020 10:09 AM

Trouble recovery
97
EJU34562
Troubleshooting
If you have any trouble with your watercraft, use the troubleshooting chart to check for the
possible cause.
If you cannot find the cause, consult a Yamaha dealer.
EJU45280Troubleshooting chart
Confirm the possible cause and remedy, and then refer to the applicable page.
TROUBLEPOSSIBLE CAUSE REMEDYPAGE
Engine does not
start (Starter motor
does not turn over) Ya m a h a S e -
curity System
Lock mode selected Select unlock mode
25
Engine shut-
off switch Clip not in place Install clip
26
Fuse Burned out Replace fuse and
check wiring 102
Battery Run down Recharge87
Poor terminal con-
nections Tighten as required
87
Terminal corroded Clean or replace 87
Starter motor Faulty Have serviced by
Yamaha dealer —
Engine does not
start (Starter motor
turns over) Throttle lever Squeezed
Release26
Faulty Have serviced by
Yamaha dealer —
RiDE lever Squeezed Release26
Faulty Have serviced by
Yamaha dealer —
Fuel Fuel tank empty Refill as soon as pos-
sible 57
Stale or contaminat-
ed Have serviced by
Yamaha dealer
—
Fuel tank Water or dirt present Have serviced by Yamaha dealer—
Spark plug Fouled or defective Have serviced by Yamaha dealer—
Fuel injec-
tion system Fuel pump faulty Have serviced by
Yamaha dealer —
UF3X72E0.book Page 97 Friday, May 29, 2020 10:09 AM

Trouble recovery
98
Engine runs irregu-
larly or stallsFuel Fuel tank empty Refill as soon as pos-
sible57
Stale or contaminat-
ed Have serviced by
Yamaha dealer
—
Incorrect octane
number Use correct fuel
57
Fuel tank Water or dirt present Have serviced by Yamaha dealer—
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 injec-
tion system Faulty or clogged in-
jectors Have serviced by
Yamaha dealer
—
Warning is dis-
played Fuel level
warningFuel tank empty Refill as soon as pos-
sible 57
Oil pressure
warning Oil pressure dropped Have serviced by
Yamaha dealer 48
Engine over-
heat warning Jet intake clogged Clean
100
Check en-
gine warning Faulty sensors Have serviced by
Yamaha dealer 47
TROUBLE POSSIBLE CAUSE REMEDY PAGE
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Trouble recovery
99
Watercraft slow or
loses powerWatercraft
operation
modeDrive control mode
activated
Deactivate or adjust
drive control mode 36
Cavitation Jet intake clogged Clean 100 Impeller damaged or
worn Have serviced by
Yamaha dealer
100
Engine over-
heat warning Engine speed reduc-
tion control activated Clean jet intake and
cool engine
47
Oil pressure
warning Engine speed reduc-
tion control activated Add oil
48
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
—
Incorrect octane
number Use correct fuel
57
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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