2017 YAMAHA SCR950 Owners Manual

Periodic maintenance an d a djustment
6-10
6
Panel C
To remove the panel
1. Remove the panel A.
2. Slide the panel lock cover open,
insert the key into the lock, and
then turn it 1/4 turn clockwise. 3. Pull the panel off as shown.
To install the panel
1. Place the panel in the original po- sition. 2. Turn the key 1/4 turn counter-
clockwise, remove it, and then
slide the panel lock cover closed.
3. Install the panel A.1. Panel C
2. Panel lock cover
3. Unlock.
2
1
3
UBL3E0E0.book Page 10 Tuesday, November 15, 2016 2:38 PM

Periodic maintenance an d a djustment
6-11
6
EAU19643
Checkin g the spark plu gsThe spark plugs are important engine
components, which should be
checked periodically, preferably by a
Yamaha dealer. Since heat and depos- its will cause any spark plug to slowly
erode, they should be removed and
checked in accordance with the peri-
odic maintenance and lubrication
chart. 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 medium-to-light tan (the
ideal color when the vehicle is ridden
normally), and all spark plugs installed
in the engine should have the same
color. If any spark plug shows a dis-
tinctly different color, the engine could
be operating improperly. Do not at-
tempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If a spark plug shows signs of elec-
trode 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.
TIPIf a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is 1/4–
1/2 turn past finger tight. However, the
spark plug should be tightened to the
specified torque as soon as possible.
Specifie
d spark plu g:
NGK/CPR7EA-91. Spark plug gapSpark plu g g ap:
0.8–0.9 mm (0.031–0.035 in)
Ti ghtenin g torque:
Spark plug: 13 N·m (1.3 kgf·m, 9.4 lb·ft)
UBL3E0E0.book Page 11 Tuesday, November 15, 2016 2:38 PM

Periodic maintenance an d a djustment
6-12
6
EAU36112
CanisterThis model is equipped with a canister
to prevent the discharging of fuel vapor
into the atmosphere. Before operating
this vehicle, make sure to check the
following:
 Check each hose connection.
 Check each hose and canister for
cracks or damage. Replace if
damaged.
 Make sure that the canister
breather is not blocked, and if
necessary, clean it.
EAU47115
Engine oil an d oil filter car-
tri dgeThe engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter car-
tridge replaced at the intervals speci-
fied in the periodic maintenance and
lubrication chart.
To check the en gine oil level
1. Place the vehicle on a level surfa- ce and hold it in an upright posi-
tion. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for several minutes, and then turn it
off.
3. Wait a few minutes until the oil set- tles.
4. Remove the engine oil filler cap, wipe the engine oil dipstick clean,
insert it back into the oil filler hole
(without screwing it in), and then
remove it again to check the oil
level.
TIPThe engine oil should be between the
minimum and maximum level marks.
1. Canister
2. Canister breather
1
2
1. Engine oil filler cap
1. Engine oil dipstick
2. O-ring
3. Maximum level mark
4. Minimum level mark
1
1
432
UBL3E0E0.book Page 12 Tuesday, November 15, 2016 2:38 PM

Periodic maintenance an d a djustment
6-13
6 5. If the engine oil is at or below the
minimum level mark, add suffi-
cient oil of the recommended type
to raise it to the correct level.
6. Check the O-ring for damage, and replace it if necessary.
7. Insert the dipstick into the oil filler hole, and then tighten the oil filler
cap.
To chan ge the en gine oil (with or
without oil filter cartri dge replace-
ment) 1. Start the engine, warm it up for several minutes, and then turn it
off.
2. Place an oil pan under the engine to collect the used oil.
3. Remove the engine oil filler cap, the engine oil drain bolt and its
gasket to drain the oil from the
crankcase.
TIPSkip steps 4–6 if the oil filter cartridge
is not being replaced.4. Remove the oil filter cartridge withan oil filter wrench.
TIPAn oil filter wrench is available at a
Yamaha dealer.5. Apply a thin coat of clean engine oil to the O-ring of the new oil filter
cartridge.TIPMake sure that the O-ring is properly
seated.6. Install the new oil filter cartridgewith an oil filter wrench, and then
tighten it to the specified torque
with a torque wrench.
1. Engine oil drain bolt
2. Gasket
1. Oil filter wrench
2. Oil filter cartridge
2
1
1
2
1. O-ring
UBL3E0E0.book Page 13 Tuesday, November 15, 2016 2:38 PM

Periodic maintenance an d a djustment
6-14
6
7. Install the engine oil drain bolt and its new gasket, and then tighten
the bolt to the specified torque.
8. Refill with the specified amount of the recommended engine oil.
TIPBe sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.NOTICE
ECA11621
In or der to prevent clutch slip-
pa ge (since the en gine oil also
lu bricates the clutch), do not
mix any chemical add itives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a hi gh-
er quality than specified . In
a dd ition, do not use oils lab eled
“ENERGY CONSERVING II” or
hi gher.
 Make sure that no forei gn mate-
rial enters the crankcase.9. Check the O-ring for damage, and replace it if necessary. 10. Install and tighten the engine oil
filler cap.
11. Start the engine, and then let it idle for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
TIPAfter the engine is started, the engine
oil level warning light should go off if
the oil level is sufficient.
1. Torque wrench
2. Oil filter cartridgeTightenin g torque:
Oil filter cartridge: 17 N·m (1.7 kgf·m, 12 lb·ft)
Ti ghtenin g torque:
Engine oil drain bolt: 43 N·m (4.3 kgf·m, 31 lb·ft)
1
2
Recommen ded en gine oil:
See page 8-1.
Oil quantity: Oil change:
3.70 L (3.91 US qt, 3.26 Imp.qt)
With oil filter removal: 4.00 L (4.23 US qt, 3.52 Imp.qt)
1. Engine oil filler cap
2. O-ring
2
1
UBL3E0E0.book Page 14 Tuesday, November 15, 2016 2:38 PM

Periodic maintenance an d a djustment
6-15
6
NOTICE
ECA10402
If the oil level warnin g lig ht flickers
or remains on even if the oil level is
correct, imme diately turn the en gine
off an d have a Yamaha d ealer check
the vehicle.12. Turn the engine off, wait a few mi- nutes until the oil settles, and then
check the oil level and correct it if
necessary.
EAU47081
Replacin g the air filter ele-
mentThe air filter element should be re-
placed at the intervals specified in the
periodic maintenance and lubrication
chart. Replace the air filter element
more frequently if you are riding in un-
usually wet or dusty areas.
To replace the air filter element
1. Remove the air filter case cover by removing the bolts.
2. Pull the air filter element out. 3. Insert a new air filter element into
the air filter case. NOTICE: Make
sure that the air filter element is
properly seate d in the air filter
case. The en gine shoul d never
b e operated without the air filter
element installe d, otherwise the
piston(s) an d/or cylin der(s) may
b ecome excessively worn.
[ECA10482]
4. Install the air filter case cover by
installing the bolts.
1. Bolt
2. Air filter case cover
2
1
1
1. Air filter element
1
UBL3E0E0.book Page 15 Tuesday, November 15, 2016 2:38 PM

Periodic maintenance an d a djustment
6-16
6
EAU21386
Checkin g the throttle grip free
playMeasure the throttle grip free play as
shown.
Periodically check the throttle grip free
play and, if necessary, have a Yamaha
dealer adjust it.
EAU21402
Valve clearanceThe valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
EAU73600
TiresTires are the only contact between the
vehicle and the road. Safety in all con-
ditions of riding depends on a relatively
small area of road contact. Therefore, it
is essential to maintain the tires in good
condition at all times and replace them
at the appropriate time with the speci-
fied tires.
Tire air pressure
The tire air pressure should be
checked and, if necessary, adjusted
before each ride.
WARNING
EWA10504
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or d eath from loss of
control.  The tire air pressure must be
checked and a djuste d on col d
tires (i.e., when the temperature
of the tires equals the am bient
temperature).
 The tire air pressure must be
a d juste d in accor dance with the
ri din g spee d an d with the total
1. Throttle grip free playThrottle grip free play:
4.0–6.0 mm (0.16–0.24 in)
1
UBL3E0E0.book Page 16 Tuesday, November 15, 2016 2:38 PM

Periodic maintenance an d a djustment
6-17
6 wei
ght of ri der, passen ger, car-
g o, an d accessories approve d
for this mo del.
WARNING
EWA10512
Never overloa d your vehicle. Opera-
tion of an overload ed vehicle coul d
cause an acci dent.
Tire inspection
The tires must be checked before each
ride. If the center tread depth reaches
the specified limit, if the tire has a nail
or glass fragments in it, or if the side-
wall is cracked, have a Yamaha dealer
replace the tire immediately.TIPThe tire tread depth limits may differ
from country to country. Always com-
ply with the local regulations.
WARNING
EWA17960
 It is d angerous to ri de with a
worn-out tire. When a tire trea d
d epth reaches the specified lim-
it, have a Yamaha dealer re-
place the tire imme diately.
 The replacement of all wheel
and b rake-relate d parts, inclu d-
in g the tires, shoul d b e left to a
Yamaha dealer, who has the
necessary professional knowl-
e dge an d experience.
 It is not recommen ded to patch
a punctured tube. If unavoi d-
a b le, however, patch the tu be
very carefully an d replace it as
soon as possi ble with a hi gh-
quality pro duct.
 Ride at mo derate speed s after
chan gin g a tire since the tire
surface must first be “ broken
in” for it to develop its optimal
characteristics.Tire information
This model is equipped with tube tires.
Tire air pressure (measure d on col d
tires): 1 person:Front:
280 kPa (2.80 kgf/cm², 41 psi)
Rear: 280 kPa (2.80 kgf/cm², 41 psi)
2 persons: Front:280 kPa (2.80 kgf/cm², 41 psi)
Rear: 280 kPa (2.80 kgf/cm², 41 psi)
Maximum loa d*:
205 kg (452 lb)
* Total weight of rider, passenger, car- go and accessories
1. Tire sidewall
2. Tire tread depthMinimum tire trea d d epth (front an d
rear): 1.6 mm (0.06 in)
UBL3E0E0.book Page 17 Tuesday, November 15, 2016 2:38 PM