2016 YAMAHA WR 450F Owners Manual

MOTORCYCLE CARE AND STORAGE
1-35
2. Apply a corrosion protection spray on all metal, including chrome- and nickel-plated,
surfaces to prevent corrosion.
After cleaning
1. Dry the motorcycle with a chamois or an ab- sorbing cloth.
2. Immediately dry the drive chain and lubri- cate it to prevent it from rusting.
3. Use a chrome polish to shine chrome, alumi-
num and stainless- st eel parts, including the
exhaust system. (Even the thermally in-
duced discoloring of stainless- steel exhaust
systems can be removed through polishing.)
4. To prevent corrosion, it is recommended to apply a corrosion protection spray on all
metal, including chrome- and nickel-plated,
surfaces.
5. Use spray oil as a universal cleaner to re- move any remaining dirt.
6. Touch up minor paint damage caused by stones, etc.
7. Wax all painted surfaces.
8. Let the motorcycle dry completely before
storing or covering it.
EWA
WARNING
Contaminants on the brakes or tires can
cause loss of control.
• Make sure that there is no oil or wax on the brakes or tires.
• If necessary, clean the brake discs and
brake linings with a regular brake disc
cleaner or acetone, and wash the tires with
warm water and a mild detergent. Before
riding at higher speeds, test the motorcy-
cle’s braking performance and cornering
behavior.
ECA
NOTICE
• Apply spray oil and wax sparingly and make sure to wipe off any excess.
• Never apply oil or wax to any rubber and
plastic parts, but treat them with a suitable
care product.
• Avoid using abrasive polishing com-
pounds as they will wear away the paint.
TIP
• Consult a Yamaha dealer for advice on what products to use.
• Washing, rainy weather or humid climates can cause the headlight lens to fog. Turning
the headlight on for a short period of time will
help remove the moisture from the lens.
EAS2GC1060STORAGE
Short-term
Always store your motorcycle in a cool, dry
place and, if necessary, protect it against dust
with a porous cover. Be sure the engine and the
exhaust system are cool before covering the
motorcycle.
ECA
NOTICE
• Storing the motorcycle in a poorly ventilat-ed room or covering it with a tarp, while it
is still wet, will allow water and humidity to
seep in and cause rust.
• To prevent corrosion, avoid damp cellars,
stables (because of the presence of am-
monia) and areas where strong chemicals
are stored.
Long-term
Before storing your motorcycle for several
months:
1. Follow all the instructions in the “Care” sec- tion of this chapter.
2. Fill up the fuel tank and add fuel stabilizer (if
available) to prevent the fuel tank from rust-
ing and the fuel from deteriorating.
3. Perform the following steps to protect the
cylinder, piston rings, etc. from corrosion.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place the spark plug on the
cylinder head so that the electrodes are
grounded. (This will limit sparking during the
next step.)
d. Turn the engine over several times with the
starter. (This will coat the cylinder wall with
oil.)

MOTORCYCLE CARE AND STORAGE
1-36
e. Remove the spark plug cap from the spark plug, and then install the spark plug and the
spark plug cap. WARNING! To prevent
damage or injury from sparking, make
sure to ground the spark plug electrodes
while turning the engine over.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
4. Lubricate all control cables and the pivoting points of all levers and pedals as well as of
the sidestand/ centerstand.
5. Check and, if necessary, correct the tire air
pressure, and then lift the motorcycle so that
both of its wheels are off the ground. Alter-
natively, turn the wheels a little every month
in order to prevent the tires from becoming
degraded in one spot.
6. Cover the muffler outlet with a plastic bag to
prevent moisture from entering it.
7. Remove the battery and fully charge it. Store it in a cool, dry place and charge it once a
month. Do not store the battery in an exces-
sively cold or warm place [less than 0 °C (30
°F) or more than 30 °C (90 °F)]. For more in-
formation on storing the battery, See page
9-69.
TIP
Make any necessary repairs before storing the
motorcycle.

2
SPECIFICATIONS
GENERAL SPECIFICATIONS......................................................................... 2-1
ENGINE SPECIFICATIONS ............................................................................. 2-2
CHASSIS SPECIFICATIONS ........................................................................... 2-7
ELECTRICAL SPECIFICATIONS .................................................................. 2-10
TIGHTENING TORQUES ............................................................................... 2-12
GENERAL TIGHTENING TORQUE SPECIFICATIONS .......................... 2-12
ENGINE TIGHTENING TORQUES .......................................................... 2-13
CHASSIS TIGHTENING TORQ UES ........................................................ 2-17
LUBRICATION POINTS AND LUBRICANT TYPES ..................................... 2-21
ENGINE .................................................................................................... 2-21
CHASSIS ..................... ............................................................................. 2-22
LUBRICATION SYSTEM CHART AND DIAGRAMS ..................................... 2-25
LUBRICATION DIAGRAMS ..................................................................... 2-25
CABLE ROUTING DIAGRAM ........................................................................ 2-33

GENERAL SPECIFICATIONS
2-1
EAS2GC1061
GENERAL SPECIFICATIONS
ModelModel 2GC1 (USA) 2GC2 (CAN)
2GC3 (EUR)
2GC4, 2GC5 (AUS) (NZL) (ZAF)
DimensionsOverall length 2165 mm (85.2 in)
Overall width 825 mm (32.5 in)
Overall height 1280 mm (50.4 in)
Seat height 965 mm (38.0 in)
Wheelbase 1465 mm (57.7 in)
Ground clearance 325 mm (12.80 in)
WeightCurb weight 123 kg (271 lb)

ENGINE SPECIFICATIONS
2-2
EAS2GC1062
ENGINE SPECIFICATIONS
EngineEngine type Liquid cooled 4-stroke, DOHC
Displacement 449 cm
3
Number of cylinders Single cylinder
Bore  stroke 97.0  60.8 mm (3.82  2.39 in)
Compression ratio 12.5:1
Starting system Electric starter and kickstarter
Fuel
Recommended fuel Premium unleaded gasoline only
Fuel tank capacity 7.5 L (2.0 US gal, 1.7 Imp.gal)
Fuel reserve amount 2.0 L (0.5 US gal, 0.4 Imp.gal)
Engine oilLubrication system Wet sump
Recommended brand YAMALUBE
Type SAE 10W-40, SAE 10W-50, SAE 15W-40, SAE 20W-40 or SAE 20W-50
Recommended engine oil grade API service SG type or higher, JASO standard MA
Engine oil quantity
Quantity (disassembled) 0.95 L (1.00 US qt, 0.84 Imp.qt)
Oil change 0.67 L (0.71 US qt, 0.59 Imp.qt)
With oil filter removal 0.69 L (0.73 US qt, 0.61 Imp.qt)
Oil filterOil filter type Paper
Bypass valve opening pressure 40.0–80.0 kPa (0.40–0.80 kgf/cm
2,
5.8–11.6 psi)
Oil pump Oil pump type Trochoid
Inner-rotor-to-outer-rotor-tip clear ance 0.000–0.150 mm (0.0000–0.0059 in)
Limit 0.20 mm (0.0079 in)
Outer-rotor-to-oil-pump-housing clearance 0.13–0.18 mm (0.0051–0.0071 in)
Limit 0.24 mm (0.0094 in)
Oil-pump-housing-to -inner-and-outer-rotor
clearance 0.06–0.11 mm (0.0024–0.0043 in)
Limit 0.17 mm (0.0067 in)
Cooling system
Radiator (including all routes) 1.03 L (1.09 US qt, 0.91 Imp.qt)
Radiator capacity 0.57 L (0.60 US qt, 0.50 Imp.qt)
Radiator cap valve opening pressure 107.9–137.3 kPa (1.08–1.37 kg/cm
2,
15.6–19.9 psi)
Radiator core Width 112.6 mm (4.43 in)
Height 235.0 mm (9.25 in)
Depth 28.0 mm (1.10 in)
Water pump
Water pump type Single suction centrifugal pump
Spark plug(s)Manufacturer/model NGK/CR8E
Spark plug gap 0.7–0.8 mm (0.028–0.031 in)

ENGINE SPECIFICATIONS
2-3
Cylinder headCombustion chamber volume 25.98–26.78 cm3 (1.59–1.63 cu.in)
Warpage limit 0.05 mm (0.0020 in)
Camshaft Drive system Chain drive (left)
Camshaft cap inside diameter 22.000–22.021 mm (0.8661–0.8670 in)
Camshaft journal diameter 21.959–21.972 mm (0.8645–0.8650 in)
Camshaft-journal-to-camshaft-cap cl earance 0.028–0.062 mm (0.0011–0.0024 in)
Camshaft lobe dimensions
Lobe height (Intake) 37.630–37.730 mm (1.4815–1.4854 in)
Limit 37.530 mm (1.4776 in)
Base circle diameter (intake) 27.950–28.050 mm (1.1004–1.1043 in)
Limit 27.850 mm (1.0965 in)
Lobe height (Exhaust) 33.870–33.970 mm (1.3335–1.3374 in)
Limit 33.770 mm (1.3295 in)
Base circle diameter (Exhaust) 24.711–24.811 mm (0.9729–0.9768 in)
Limit 24.611 mm (0.9689 in)
Camshaft runout limit 0.030 mm (0.0012 in)
Timing chain Tensioning system Automatic
Valve, valve seat, valve guide
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)
Valve dimensions
Valve head diameter (intake) 36.90–37.10 mm (1.4528–1.4606 in)
Valve head diameter (exhaust) 30.40–30.60 mm (1.1968–1.2047 in)
Valve face width (intake) 1.697 mm (0.0668 in)
Valve face width (exhaust) 1.768 mm (0.0696 in)
Valve seat contact width (intake) 0.90–1.10 mm (0.0354–0.0433 in)
Valve seat contact width (exhaust) 0.90–1.10 mm (0.0354–0.0433 in)
Valve margin thickness (intake) 1.20 mm (0.0472 in)
Valve margin thickness (exhaust) 0.85 mm (0.0335 in)
Valve stem diameter (intake) 5.475–5.490 mm (0.2156–0.2161 in)
Limit 5.445 mm (0.2144 in)
Valve stem diameter (exhaust) 5.465–5.480 mm (0.2152–0.2157 in)
Limit 5.435 mm (0.2140 in)
Valve guide inside diameter (intake) 5.500–5.512 mm (0.2165–0.2170 in)
Limit 5.550 mm (0.2185 in)
Valve guide inside diameter (exhaus t) 5.500–5.512 mm (0.2165–0.2170 in)
Limit 5.550 mm (0.2185 in)
Valve-stem-to-valve-guide clearance (intake) 0.010–0.037 mm (0.0004–0.0015 in)
Limit 0.080 mm (0.0032 in)
Valve-stem-to-valve-guide clearance (exhaust) 0.020–0.047 mm (0.0008–0.0019 in)
Limit 0.100 mm (0.0039 in)
Valve stem runout 0.010 mm (0.0004 in)

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 SPECIFICATIONS
2-5
CrankshaftCrank assembly width 61.93–62.00 mm (2.438–2.441 in)
Runout limit 0.030 mm (0.0012 in)
Big end side clearance 0.150–0.450 mm (0.0059–0.0177 in)
BalancerBalancer drive method Gear
ClutchClutch type Wet, multiple-disc
Clutch release method Inner push, cam push
Clutch lever free play 7.0–12.0 mm (0.28–0.47 in)
Friction plate 1 thickness 2.92–3.08 mm (0.115–0.121 in)
Wear limit 2.85 mm (0.112 in)
Plate quantity 3 pcs
Friction plate 2 thickness 2.92–3.08 mm (0.115–0.121 in)
Wear limit 2.85 mm (0.112 in)
Plate quantity 5 pcs
Clutch plate 1 thickness 1.90–2.10 mm (0.075–0.083 in)
Plate quantity 4 pcs
Warpage limit 0.10 mm (0.004 in)
Clutch plate 2 thickness 1.50–1.70 mm (0.059–0.067 in)
Plate quantity 3 pcs
Warpage limit 0.10 mm (0.004 in)
Clutch spring free length 50.00 mm (1.97 in)
Limit 47.50 mm (1.87 in)
Spring quantity 6 pcs
Push rod bending limit 0.10 mm (0.004 in)
TransmissionTransmission type Constant mesh 5-speed
Primary reduction system Spur gear
Primary reduction ratio 2.609 (60/23)
Final drive Chain
Secondary reduction ratio 3.846 (50/13)
Operation Left foot operation
Gear ratio
1st 2.417 (29/12)
2nd 1.733 (26/15)
3rd 1.313 (21/16)
4th 1.050 (21/20)
5th 0.840 (21/25)
Main axle runout limit 0.08 mm (0.0032 in)
Drive axle runout limit 0.08 mm (0.0032 in)
Shifting mechanism
Shift mechanism type Shift drum and guide bar
Shift fork guide bar bending limit 0.050 mm (0.0020 in)
Shift fork thickness 4.85 mm (0.1909 in)
Decompression deviceDevice type Auto decomp
Air filterAir filter element Wet element
Air filter oil grade Yamaha foam air filter oil or other quality foam air filter oil