Motorcycle User Manual
Table Of Contents
- R1 EXUP DELTABOX V YZFR1X(C) OWNER'S MANUAL
- INTRODUCTION
- IMPORTANT MANUAL INFORMATION
- TABLE OF CONTENTS
- SAFETY INFORMATION
- DESCRIPTION
- INSTRUMENT AND CONTROL FUNCTIONS
- Main switch/steering lock
- Indicator and warning lights
- Multi-function meter unit
- Handlebar switches
- Clutch lever
- Shift pedal
- Brake lever
- Brake pedal
- Fuel tank cap
- Fuel
- Catalytic converters
- Seats
- Helmet holders
- Adjusting the front fork
- Adjusting the shock absorber assembly
- Luggage strap holders
- EXUP system
- Sidestand
- Ignition circuit cut-off system
- PRE-OPERATION CHECKS
- OPERATION AND IMPORTANT RIDING POINTS
- PERIODIC MAINTENANCE AND MINOR REPAIR
- PERIODIC MAINTENANCE
- Owner's tool kit
- Periodic maintenance chart for the emission control system
- General maintenance and lubrication chart
- Removing and installing cowlings and panels
- Checking the spark plugs
- Canister (for California only)
- Engine oil and oil filter cartridge
- Coolant
- Checking and replacing the air filter element
- Checking the engine idling speed
- Checking the throttle cable free play
- Valve clearance
- Tires
- Cast wheels
- Accessories and replacement parts
- Adjusting the clutch lever free play
- Adjusting the rear brake light switch
- Checking the front and rear brake pads
- Checking the brake fluid level
- Changing the brake fluid
- Drive chain slack
- Cleaning and lubricating the drive chain
- Checking and lubricating the cables
- Checking and lubricating the throttle grip and cable
- Checking and lubricating the brake and clutch levers
- Checking and lubricating the shift pedal
- Checking and lubricating the sidestand
- Lubricating the swingarm pivots
- Checking the front fork
- Checking the steering
- Checking the wheel bearings
- Battery
- Replacing the fuses
- Replacing a headlight bulb
- Tail/brake light
- Replacing a turn signal light bulb
- Replacing the license plate light bulb
- Replacing an auxiliary light bulb
- Supporting the motorcycle
- Front wheel
- Rear wheel
- Troubleshooting
- Troubleshooting charts
- MOTORCYCLE CARE AND STORAGE
- SPECIFICATIONS
- CONSUMER INFORMATION
- INDEX
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-12
6
EAU19652
Checking the spark plugs
The spark plugs are important engine
components, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
they should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of each spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally),
and all spark plugs installed in the en-
gine should have the same color. If any
spark plug shows a distinctly different
color, the engine could be operating im-
properly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If a spark plug shows signs of electrode
erosion 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 thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
Specified spark plug:
NGK/CR9EK
1. Spark plug gap
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
U4C811E0.book Page 12 Thursday, June 7, 2007 2:38 PM