check engine YAMAHA EX LIMITED 2021 Owner's Guide

Maintenance
81
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 √√ 83
Oil filter Replace √83
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 lever (EX
SPORT) Check exterior and con-
nections, and lubricate
√
—
Shift cable and re-
verse gate (EX
SPORT) Check exterior and con-
nections, and lubricate
√
—
Shift rod and reverse
gate (EX DELUXE /
EX LIMITED)Check exterior and con-
nections, and lubricate √
—
Air filter element Check for damage and
dirt
√
—
Air intake hoses Check for damage, and
check clamps
√
—
UF3Y74E0.book Page 81 Monday, June 22, 2020 5:11 PM

Maintenance
82
*1: Whichever comes first.
*2: Check every 200 hours.
Perform the pre-operation checks and post-operation checks before performing periodic
maintenance.
Throttle bodyLubricate throttle valve √—
Exhaust system Check 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
UF3Y74E0.book Page 82 Monday, June 22, 2020 5:11 PM

Trouble recovery
86
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.
EJU44430Troubleshooting 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) Engine shut-
off switch
Clip not in place Install clip
24
Fuse Burned out Have serviced by
Yamaha dealer —
Battery Run down Recharge75
Poor terminal con-
nections Tighten as required
75
Terminal corroded Clean or replace 75
Starter motor Faulty Have serviced by
Yamaha dealer —
Engine does not
start (Starter motor
turns over) Throttle lever Squeezed
Release24
Faulty Have serviced by
Yamaha dealer —
RiDE lever
(EX
DELUXE / EX
LIMITED) Squeezed
Release 24
Faulty Have serviced by
Yamaha dealer —
Fuel Fuel tank empty Refill as soon as pos-
sible 43
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 —
UF3Y74E0.book Page 86 Monday, June 22, 2020 5:11 PM

Trouble recovery
87
Engine runs irregu-
larly or stallsFuel Fuel tank empty Refill as soon as pos-
sible43
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—
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 light or in-
dicator blinks or
comes on Fuel level
warning
Fuel tank empty Refill as soon as pos-
sible 43
Oil pressure
warning Oil pressure dropped Have serviced by
Yamaha dealer 35
Engine over-
heat warning Jet intake clogged Clean
89
Check en-
gine warning Faulty sensors Have serviced by
Yamaha dealer 36
TROUBLE POSSIBLE CAUSE REMEDY PAGE
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Trouble recovery
89
EJU34625
Emergency proceduresEJU44590Cleaning the jet intake and impellerEWJ00783
Before attempting to remove weeds or de-
bris from the jet intake or impeller area,
shut the engine off and remove the clip
from the engine shut-off switch. Severe in-
jury or death could result from coming in
contact with the rotating parts of the jet
pump.
If weeds or debris gets caught in the jet intake
or impeller, cavitation can occur, causing jet
thrust to decrease even though engine speed
rises. If this condition is allowed to continue,
the engine will overheat and may seize.
NOTICE: If weeds or debris gets caught in
the jet intake, do not operate the water-
craft above trolling speed until they have
been removed.
[ECJ00654]
If there is any sign that the jet intake or impel-
ler is clogged with weeds or debris, return to
shore and check the intake and impeller. Al- ways stop the engine before beaching the
watercraft.
(1) Place a suitable clean cloth or carpeting
underneath the watercraft to protect it
from abrasions and scratches. Turn the
watercraft on its side as shown.
NOTICE: When turning the watercraft
on its side, support the bow so that
the handlebars are not bent or dam-
aged.
[ECJ02690]
(2) Remove any weeds or debris from around the jet intake, drive shaft, impel-
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93
Index
A
After removing the watercraft from the water ..................................................... 73
B
Battery care.............................................. 75
Battery checks ......................................... 54
Battery, jumping....................................... 90
Beaching and docking the watercraft ...... 72
Bilge water check..................................... 54
Bilge water, draining ................................ 47
Bilge water, draining on land ................... 47
Bilge water, draining on water ................. 48
Boarding alone ......................................... 68
Boarding and starting off from a dock ..... 71
Boarding the watercraft ........................... 67
Boarding with passenger(s) ..................... 68
Bow eye ................................................... 39
Bow storage compartment ...................... 40
Builder’s plate ............................................ 3
C
Capsized watercraft ................................. 71
Check engine warning ............................. 36
Cleaning ................................................... 77
Cleaning the watercraft ............................ 75
Cleat ......................................................... 39
Cooling water pilot outlet ......................... 26
Cooling water pilot outlet check .............. 59
Craft Identification Number (CIN)............... 1
Cruising limitations................................... 10
E
Emergency procedures ............................ 89
Engine break-in ........................................ 50
Engine compartment check ..................... 53
Engine idling speed check ....................... 59
Engine oil ................................................. 45
Engine oil and oil filter .............................. 83
Engine oil level check............................... 54
Engine oil requirements ........................... 45
Engine overheat warning ......................... 35
Engine serial number ................................. 2
Engine shut-off cord (lanyard) check ....... 56
Engine shut-off switch ............................. 24
Engine stop switch................................... 24
Engine unit check..................................... 54
Enjoy your watercraft responsibly............ 18 Equipment ................................................ 37
F
Fire extinguisher check ............................ 57
Fire extinguisher holder............................ 42
Fire extinguisher holder checks ............... 57
Flushing the cooling water passages....... 74
Fuel .......................................................... 43
Fuel level check........................................ 53
Fuel level meter ........................................ 34
Fuel level warning..................................... 35
Fuel requirements .................................... 43
Fuel system checks ................................. 53
G
Getting to know your watercraft .............. 60
Glossary, watercraft ................................. 19
Glove compartment ................................. 40
H
Handgrip .................................................. 37
Hazard information................................... 14
Hood check .............................................. 58
Hour meter and voltmeter ........................ 33
Hull and deck check ................................ 58
I
Identification numbers ............................... 1
Information display................................... 32
J
Jet intake and impeller, cleaning.............. 89
Jet intake checks ..................................... 58
Jet thrust nozzle and reverse gate check
(EX SPORT / EX DELUXE / EX
LIMITED) ............................................... 58
Jumper cables, connecting ...................... 90
L
Labels, important ....................................... 4
Labels, other .............................................. 8
Labels, warning .......................................... 5
Launching the watercraft ......................... 61
Learning to operate your watercraft......... 60
Leaving the watercraft.............................. 62
Limitations on who may operate the watercraft ................................................ 9
Long-term storage ................................... 77
Lubrication ............................................... 77
M
Main components, location of ................. 20
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Index
94
Maintenance ............................................ 80
Manufactured date label ............................ 2
Model information ...................................... 3
Multifunction information center .............. 32
Multifunction information center check ... 59
O
Oil pressure warning ................................ 35
Operating in weeded areas ...................... 72
Operating the watercraft .......................... 62
Operating the watercraft in reverse or neutral (EX SPORT / EX DELUXE / EX
LIMITED) ............................................... 66
Operating your watercraft ........................ 60
Operation requirements ........................... 11
P
Periodic maintenance chart ..................... 81
Post-launch checks ................................. 59
Post-operation care ................................. 74
Pre-launch checks ................................... 53
Pre-operation check points ..................... 53
Pre-operation checklist ............................ 51
Primary Identification (PRI-ID) number ...... 1
Pull-up cleats (EX LIMITED) ..................... 39
R
Raising the reverse gate (EX DELUXE / EX LIMITED).......................................... 90
Reboarding grip ....................................... 38
Reboarding step (EX SPORT / EX DELUXE / EX LIMITED) ......................... 38
Recommended equipment ...................... 13
Reverse system checks (EX SPORT) ....... 55
Reverse system (EX SPORT) ................... 28
RiDE lever checks (EX DELUXE / EX LIMITED) ............................................... 56
RiDE lever (EX DELUXE / EX LIMITED) .... 25
Riding position ......................................... 61
Rustproofing ............................................ 78
S
Safe boating rules .................................... 17
Safety equipment check .......................... 58
Seat .......................................................... 37
Seat storage compartment ...................... 41
Shift indicator (EX DELUXE / EX
LIMITED) ............................................... 33 Shift system check (EX DELUXE / EX
LIMITED) ............................................... 59
Shift system (EX DELUXE / EX LIMITED) ............................................... 29
Speedometer ........................................... 32
Start switch .............................................. 24
Starting off ............................................... 70
Starting off from a trailer .......................... 70
Starting the engine on water .................... 61
Steering system ....................................... 25
Steering system checks ........................... 55
Stern drain plug checks ........................... 58
Stern eyes ................................................ 39
Stopping the engine ................................. 62
Stopping the watercraft ........................... 65
Storage compartment checks.................. 57
Storage compartments ............................ 39
Submerged watercraft ............................. 91
Switch checks .......................................... 57
T
Tachometer .............................................. 33
Throttle lever ............................................ 25
Throttle lever checks ................................ 56
Towing the watercraft .............................. 91
Transporting on a trailer ........................... 49
Troubleshooting ....................................... 86
Troubleshooting chart .............................. 86
Turning the watercraft .............................. 64
W
Wakeboarding and water-skiing .............. 16
Water separator ....................................... 26
Water separator check ............................. 54
Watercraft characteristics ........................ 14
Watercraft control functions..................... 24
Watercraft operation functions ................ 28
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