2021 YAMAHA YXZ1000R check engine light

9-37
9
EBU35121Checking the spark plugsThe spark plug is an important engine com-
ponent which should be periodically
checked, preferably by a Yamaha dealer.
Since heat and deposits will cause any spark
plug to slowly erode, the spark plugs should
be removed and checked in accordance with
the periodic maintenance chart for the emis-
sion control system. In addition, the condition
of the spark plugs can reveal the condition of
the engine. The porcelain insulator around the center
electrode of each spark plug should be a me-
dium-to-light tan color (the ideal color when
the vehicle is ridden normally), and all spark
plugs installed in the engine should have a
similar color. If any spark plug shows a dis-
tinctly different color, the engine could be op-
erating improperly. Do not attempt to
diagnose such problems yourself. Instead,
have a Yamaha dealer check the vehicle.
If a spark plug shows signs of electrode ero-
sion and excessive carbon or other deposits,
it should be replaced.
Before installing a spark plug, the spark plug
gap should be measured with a wire thick-
ness gauge and, if necessary, adjusted to
specification.1. Rear axle boot
1
1
Specified spark plug:
NGK/CR9EB
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13
INDEX
AAccelerator pedal ......................................................... 5-18
Accelerator pedal, checking ........................................ 9-50
Accelerator pedal, Pre-operation check ........................ 6-7
Air filter ......................................................................... 9-39
Air filter case hoses, cleaning ...................................... 9-43
Auxiliary DC jack .......................................................... 5-43
Axle boots .................................................................... 9-36BBasic guide for safe use ................................................ 8-1
Battery, Periodic maintenance .................................... 9-58
Brake and clutch fluid levels, checking ....................... 9-47
Brake fluid, replacing ................................................... 9-49
Brake light switch, adjusting ........................................ 9-52
Brake pedal .................................................................. 5-19
Brake pedal, checking ................................................. 9-49
Brakes, Periodic maintenance ..................................... 9-45
Brakes, Pre-operation check ......................................... 6-3
Brake/tail light .............................................................. 9-66CCable, inspecting and lubrication ................................ 9-52
Cargo bed .................................................................... 5-27
Cleaning ....................................................................... 10-1
Clutch pedal ................................................................. 5-18
Clutch pedal, checking ................................................ 9-49
Clutch, Pre-operation check .......................................... 6-3
Control cables, Pre-operation check ............................. 6-8
Coolant, Periodic maintenance ................................... 9-34
Coolant, Pre-operation check ........................................ 6-6Coolant temperature warning light ................................ 5-4
Cup holders ................................................................. 5-26
DData recording, vehicle ................................................ 12-1
Differential gear lock indicator light ............................... 5-3
Differential gear oil, Periodic maintenance .................. 9-32
Differential gear, Pre-operation check ........................... 6-6
Doors ........................................................................... 5-21
Drive mode, selecting .................................................... 7-7
Driver seat position ...................................................... 5-23
Drive shaft universal joint, lubrication .......................... 9-55
Drivetrain icon ................................................................ 5-3EEngine break-in .............................................................. 7-1
Engine oil and oil filter, Periodic maintenance ............. 9-16
Engine oil, Pre-operation check .................................... 6-6
Engine trouble warning light .......................................... 5-5
EPS warning light .......................................................... 5-5FFinal gear oil, Periodic maintenance ............................ 9-30
Final gear, Pre-operation check .................................... 6-6
Fittings and fasteners, Pre-operation check ................. 6-8
Flag pole bracket ......................................................... 5-28
Four–wheel drive knob (On–Command 4WD) ............. 5-17
Front and rear brake pads, checking .......................... 9-46
Fuel, Pre-operation check ............................................. 6-4
Fuel tank cap ............................................................... 5-21
Fuse, replacing ............................................................ 9-63GGlove compartment ..................................................... 5-25
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13
HHeadlight beam, adjusting ........................................... 9-65
Headlights .................................................................... 9-65
Helmet reminder light .....................................................5-6
High beam indicator light ............................................... 5-3
Hood ............................................................................ 9-10IIdentification numbers ................................................... 1-1
Indicator lights and warning lights ................................. 5-2
Instruments, lights and switches, Pre-operation check ........................................................................... 6-8JJump-starting ............................................................... 9-61LLabel locations ............................................................... 2-1
Light switch .................................................................. 5-16
Loading ..........................................................................7-9MMain switch .................................................................... 5-1
Maintenance and lubrication chart ................................9-6
Maintenance chart, emission control system ................ 9-4
Maintenance charts ....................................................... 9-4
Model label ..................................................................... 1-1
Multi-function meter unit ................................................ 5-7NNeutral indicator light .....................................................5-2OOwner’s Manual and tool kit .......................................... 9-2PPanels .......................................................................... 9-10
Parking ........................................................................... 7-9 Parking brake indicator light .......................................... 5-3
Parking brake lever ...................................................... 5-19
Parking brake lever free play, adjusting ....................... 9-51
Parking brake pads, checking ..................................... 9-46
Passenger handhold, Pre-operation check ................... 6-7
Pedal, lubrication ......................................................... 9-53
RRear knuckle upper and lower pivot, lubrication ......... 9-55
Reverse gear lock lever ................................................ 5-20
Reverse indicator light ................................................... 5-2SSafety information .......................................................... 3-1
Seat belt reminder light .................................................. 5-6
Seat belts ..................................................................... 5-24
Seat belts, Pre-operation check .................................... 6-7
Seats ............................................................................ 5-21
Shift lever ..................................................................... 5-20
Shift lever operation and reverse driving ....................... 7-3
Shift lever, Pre-operation check .................................... 6-8
Shift light ........................................................................ 5-4
Shock absorbers, front ................................................ 5-28
Shock absorbers, rear ................................................. 5-36
Spark arrester, cleaning ............................................... 9-44
Spark plugs, checking ................................................. 9-37
Specifications .............................................................. 11-1
Stabilizer bushes, checking ......................................... 9-53
Starting the engine ......................................................... 7-2
Steering, Pre-operation check ....................................... 6-7
Steering shaft, lubrication ............................................ 9-55
Steering wheel position ................................................ 5-23
Storage ........................................................................ 10-2
Storage compartments ................................................ 5-25
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