2016 YAMAHA WR 450F clock

MULTI-FUNCTION DISPLAY
1-21
EAS2GC1042
MULTI-FUNCTION DISPLAYEWA
WARNING
Be sure to stop the machine before making
any setting changes to the multi-function
display.
The multi-function display is equipped with the
following:
BASIC MODE:
• Speedometer
•Clock
• Two tripmeters (which shows the distance that has been traveled since it was last set to
zero)
RACE MODE:
• Timer (which shows the time that has been
accumulated since the start of timer measure-
ment)
• Tripmeter (which shows the accumulated travel distance in timer measurement)
• Change tripmeter digits (capable of change to
any given ones)
EAS2GC1043DESCRIPTION
Operation buttons:
1. Select button “SLCT 1”
2. Select button “SLCT 2”
3. Reset button “RST”
Screen display:
4. Tripmeter indicator
5. Tripmeter indicator
6. Timer indicator
7. Clock/Timer
8. Speedometer
9. Odometer/Tripmeter
TIP
The operation buttons can be pushed in the fol-
lowing two manners:
Short push: Push the button. ( )
Long push: Push the button for 2 seconds or
more. ( )
EAS2GC1044BASIC MODE
Changing speedometer display (for U.K.)
1. Push the “SLCT2” button for 2 seconds or more to change the speedometer units. The
speedometer display will change in the fol-
lowing order:
MPH  km/h  MPH.
Setting the time
1. Push the “SLCT1” button for 2 seconds or more to enter the time setting mode.
2. Push the “RST” button to change the display for time indication. The display will change in
the following order:
Hour MinuteSecond Hour.
TIP
The digits capable of setting go on flashing.
3. Push the “SLCT1” button (plus) or “SLCT2”
button (minus) and change the time. A long
push on the button will fast-forward the time.

MULTI-FUNCTION DISPLAY
1-26
EAS2GC1047FUNCTION DIAGRAM
TIP
The following diagram illustrates the multi-function display regarding the direction and operation con-
dition involved in each of its functions.
A short push on the button changes
the operation in the arrowed direction.
A short push on the button changes
the operation in both arrowed directions.
A long push on the button changes the
operation in the arrowed direction.
A long push on the button changes the
operation in both arrowed directions. Meter function
Function that can be performed whether
the time is or is not in operation.
Extent to which the meter can operate
Clock
BASIC MODE
Tripmeter
ODO TRIP A TRIP B ODO
Speedometer
(for U.K.)
MPH
km/h MPH
Putting measurement on
standby
Manual startAuto start
RACE MODE
Timer in operation
Reset
TRIP A Correct
TRIP AMeasurement starts as the
machine moves
Timer not in
operation
Correct
TRIP A Reset
TRIP A &
timer

MULTI-FUNCTION DISPLAY
1-27
A. A short push on the button changes the op-eration in the arrowed direction.
B. A short push on the button changes the op-
eration in both arrowed directions.
C. A long push on the button changes the oper- ation in the arrowed direction.
D. A long push on the button changes the oper- ation in both arrowed directions.
E. Meter function
F. Function that can be performed whether the
time is or is not in operation.
G. Extent to which the meter can operate
1. BASIC MODE
2. Clock
3. Trip meter
4. Speedometer (for U.K.)
5. RACE MODE
6. Putting measurement on standby
7. Manual start
8. Auto start
9. Measurement starts as the machine moves
10.Timer in operation
11.Reset TRIP A
12.Correct TRIP A
13.Timer not in operation
14.Reset TRIP A and timer

ENGINE SPECIFICATIONS
2-4
Valve springFree length (intake) 40.76 mm (1.60 in)
Limit 38.72 mm (1.52 in)
Free length (exhaust) 36.94 mm (1.45 in)
Limit 35.09 mm (1.38 in)
Installed length (intake) 34.78 mm (1.37 in)
Installed length (exhaust) 30.83 mm (1.21 in)
Spring rate K1 (intake) 31.90 N/mm (3.25 kgf/mm, 182.15 lbf/in)
Spring rate K2 (intake) 41.37 N/mm (4.22 kgf/mm, 236.22 lbf/in)
Spring rate K1 (exhaust) 21.76 N/mm (2.22 kgf/mm, 124.25 lbf/in)
Spring rate K2 (exhaust) 28.12 N/mm (2.87 kgf/mm, 160.57 lbf/in)
Installed compression spring force (intake) 178.00–204.00 N (18.15–20.80 kgf,
40.01–45.86 lbf)
Installed compression spring force (exhaust) 124.00–142.00 N (12.64–14.48 kgf,
27.88–31.92 lbf)
Spring tilt (intake) 2.5 °/1.8 mm (2.5 °/0.07 in)
Spring tilt (exhaust) 2.5 °/1.6 mm (2.5 °/0.06 in)
Winding direction (intake) Clockwise
Winding direction (exhaust) Clockwise
Cylinder Bore 97.000–97.010 mm (3.8189–3.8193 in)
Taper limit 0.050 mm (0.0020 in)
Out of round limit 0.050 mm (0.0020 in)
PistonPiston-to-cylinder clearance 0.030–0.055 mm (0.0012–0.0022 in)
Limit 0.15 mm (0.006 in)
Diameter 96.955–96.970 mm (3.8171–3.8177 in)
Measuring point (from piston skirt bottom) 9.0 mm (0.35 in)
Offset 0.00 mm (0.0000 in)
Piston pin bore inside diameter 18.004–18.015 mm (0.7088–0.7093 in)
Limit 18.045 mm (0.7104 in)
Piston pin outside diameter 17.991–18.000 mm (0.7083–0.7087 in)
Limit 17.971 mm (0.7075 in)
Piston ringTop ring Ring type Barrel
Dimensions (B  T) 1.00  3.30 mm (0.04  0.13 in)
End gap (installed) 0.20–0.30 mm (0.0079–0.0118 in)
Limit 0.55 mm (0.0217 in)
Ring side clearance 0.015–0.065 mm (0.0006–0.0026 in)
Limit 0.120 mm (0.0047 in)
2nd ring Ring type Taper
Dimensions (B  T) 1.00  3.10 mm (0.04  0.12 in)
End gap (installed) 0.35–0.50 mm (0.0138–0.0197 in)
Limit 0.85 mm (0.0335 in)
Ring side clearance 0.020–0.060 mm (0.0008–0.0024 in)
Limit 0.120 mm (0.0047 in)
Oil ring
Dimensions (B  T) 1.50  2.25 mm (0.06  0.89 in)
End gap (installed) 0.20–0.50 mm (0.0079–0.0197 in)

ENGINE
3-19
EAS2GC1098ADJUSTING THE ENGINE IDLING SPEED
TIP
• Because the air pressure is lower at high alti-tudes, the air-fuel mixture will become richer.
If the idling speed is low, turn the starter knob/
idle screw a few clicks counterclockwise to in-
crease the speed before the adjustment.
• Before adjusting the engine idling speed, make sure that the air filter element is not
clogged, the engine compression is proper,
and the throttle grip free play is proper.
• Adjust the engine idling speed with the starter
knob/idle screw pushed in completely.
1. Start the engine, and warm this up until the oil has reached the specified temperature.
TIP
This model is equipped with an engine auto-
stop system. The engine stops automatically if
left idling for 7 minutes. If the engine stops,
push the start switch or push down the kick-
starter lever to restart the engine.
2. Attach the pocket tester with temperature probe “1” to the oil drain bolt.
3. Install: • Digital tachometer
TIP
Get the high tension cord “1” of the ignition coil
pinched in the detector “a” of the digital tachom-
eter.
4. Measure:• Engine idling speed
Out of specification  Regulate.
5. Adjust: • Engine idling speed
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a. Turn the starter knob/idle screw “1” in the di- rection of “a” or “b” to make an adjustment.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
Oil temperature70–80 °C (158–176 °F)
Digital tachometer 90890-06760
Digital tachometer YU-39951-B
1
Engine idling speed 1900–2100 r/min
Direction “a” Engine idling speed  De-
creases.
Direction “b” Engine idling speed  In-
creases.
1
1
a
a
1
b
a

ENGINE
3-20
EAS2GC1099ADJUSTING THE VALVE CLEARANCE
TIP
• This section is intended for those who have basic knowledge and skill concerning the ser-
vicing of Yamaha motorcycles (e.g., Yamaha
dealers, service engineers, etc.). Those who
have little knowledge and skill concerning ser-
vicing are requested not to undertake inspec-
tion, adjustment, disassembly, or reassembly
only by reference to this manual. It may lead
to servicing trouble and mechanical damage.
• Make sure that the valve clearance is checked or adjusted while the engine is cold
(at room temperature).
• While the valve clearance is checked or ad- justed, make sure that the piston is positioned
in the top dead center (TDC).
1. Remove: • Seat
• Side cover (left/right)
• Air scoop (left/right)Refer to “GENERAL CHASSIS” on page 5-
1.
• Fuel tank
Refer to “FUEL TANK” on page 8-1.
•ECU
2. Remove:
• Spark plug
• Cylinder head coverRefer to “CAMSHAFT” on page 6-11.
3. Remove: • Timing mark accessing screw “1”
• Crankshaft end accessing screw “2”
• O-ring 4. Check:
• Valve clearanceOut of specification  Regulate.
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a. Turn the crankshaft counterclockwise with a
wrench.
b. Align the top dead center (TDC) mark “a” on the rotor with the alignment mark “b” on the
crankcase cover.
TIP
Check that the alignment mark “c” on the cam-
shaft sprocket and the alignment mark “d” on
the intake camshaft sprocket are aligned with
the edge of the cylinder head.
c. Measure the valve clearance “e” using a
thickness gauge “1”.
TIP
Record the measured reading if the clearance
is incorrect.
12
Valve clearance (cold)Intake 0.13–0.20 mm (0.0051–0.0079 in)
Exhaust 0.18–0.25 mm (0.0071–0.0098 in)
ab
d
c

ELECTRICAL SYSTEM
3-40
EAS2GC1130
ELECTRICAL SYSTEM
EAS2GC1131CHECKING THE SPARK PLUG
1. Remove:• Seat
• Air scoop (left/right)
Refer to “GENERAL CHASSIS” on page 5-
1.
• Fuel tank “1” Refer to “FUEL TANK” on page 8-1.
ECA
NOTICE
Do not use too much force to pull the hose.
TIP
Remove the fuel tank, turn this 180 ° clockwise,
and put it in the frame “2” as shown.
2. Remove:• Spark plug cap
• Spark plugRefer to “CAMSHAFT” on page 6-11.
ECA
NOTICE
In order not to allow the dirt accumulated
around the spark plug to drop from the
spark plug hole into the cylinder, clean it be-
fore removing the spark plug.
3. Check:• Spark plug type
Wrong type  Replace.
4. Check: • ElectrodeDamage/wear  Replace the spark plug.
• Insulator Abnormal color  Replace the spark plug.
Normal color is medium-to-light tan. 5. Clean:
• Spark plug(with a spark plug cleaner or a wire brush)
6. Measure: • Spark plug gap “a”Out of specification  Adjust the spark plug
gap.
7. Install: • Spark plug
TIP
Before installing the spark plug, clean the spark
plug and gasket surface.
8. Install:• Spark plug cap
• Fuel tank
• Air scoop (left/right)
• Seat
• Side cover (left/right)Refer to “GENERAL CHASSIS” on page 5-
1.
EAS2GC1132CHECKING THE IGNITION TIMING
1. Remove:
• Timing mark accessing screw “1”
Manufacturer/model
NGK/CR8E
1
1
2
Spark plug gap 0.7–0.8 mm (0.028–0.031 in)
Spark plug 13 Nm (1.3 m·kgf, 9.4 ft·lbf)
T R..
1

CHASSIS
4-6
EAS2GC1148SUSPENSION SETTING (FRONT FORK)
TIP
• If any of the following symptoms is experienced with the standard position as the base, make reset-ting by reference to the adjustment procedure given in the same chart.
• Before any change, set the rear shock absor ber sunken length to the standard figure 90–100 mm
(3.5–3.9 in).
Symptom Section
CheckAdjust
Jump Large
gap Medi-
um
gap Small
gap
Stiff over entire
range Compression
damping force
Turn adjuster counterclock-
wise (about 2 clicks) to de-
crease damping.
Oil amount Decrease oil amount by about 5–10 cm
3 (0.2–0.3 US oz, 0.2–
0.4 Imp.oz).
Spring Replace with soft spring.
Unsmooth
movement over
entire range Outer tube
Inner tube
Check for any bends, dents,
other noticeable scars, etc. If
any, replace affected parts.
Slide metal Replace with a new one for ex- tended use.
Piston metal Replace with a new one for ex- tended use.
Lower bracket
tightening
torque Retighten to specified torque.
Poor initial
movement Rebound
damping force
Turn adjuster counterclock-
wise (about 2 clicks) to de-
crease damping.
Oil seals Apply grease in oil seal wall.
Soft over entire
range, bottom-
ing out Compression
damping force
Turn adjuster clockwise (about
2 clicks) to increase damping.
Oil amount Increase oil amount by about 5–10 cm
3 (0.2–0.3 US oz, 0.2–
0.4 Imp.oz).
Spring Replace with stiff spring.
Stiff toward
stroke end Oil amountDecrease oil amount by about
5 cm
3 (0.2 US oz, 0.2 Imp.oz).
Soft toward
stroke end, bot-
toming out Oil amountIncrease oil amount by about 5
cm
3 (0.2 US oz, 0.2 Imp.oz).
Stiff initial
movement Compression
damping forceTurn adjuster counterclock-
wise (about 2 clicks) to de-
crease damping.