engine oil YAMAHA XT660Z 2015 User Guide
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Page 55 of 98

PERIODIC MAINTENANCE AND ADJUSTMENT
6-11
6 tion, otherwise hot engine oil
could spout out and cause dam-
age or injury. Always let the en-
gine oil cool down sufficiently
before removing the oil filler
cap.
[EWA17640]
TIPThe engine oil tank is located in-
side of the frame.
The engine oil should be between
the minimum and maximum level
marks.4. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raiseit to the correct level. NOTICE: Do
not operate the vehicle until you
know that the engine oil level is
sufficient.
[ECA10012]
5. Install the oil filler cap.
To change the engine oil (with or
without oil filter element replace-
ment)
1. Start the engine, warm it up for
several minutes, and then turn it
off.
2. Remove the engine guard by re-
moving the screws.
3. Place an oil pan under the engine
to collect the used oil.4. Remove the engine oil filler cap
and the drain bolt to drain the oil
from the crankcase.
5. Remove the drain bolt to drain the
oil from the oil tank.
1. Engine oil filler cap
2. Maximum level mark
3. Minimum level mark
1. Screw
2. Engine guard
1. Engine oil drain bolt (crankcase)
1. Engine oil drain bolt (oil tank)ZAUM1262ZAUM1263
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-12
66. Remove the oil filter element drain
bolt to drain the oil from the oil fil-
ter element.
TIPSkip steps 7…9 if the oil filter element is
not being replaced.7. Remove the oil filter element cover
by removing the bolts.
8. Remove and replace the oil filter
element and O-rings.TIPMake sure that the O-rings are properly
seated.
9. Install the oil filter element cover
by installing the bolts.
10. Install the oil filter element drain
bolt.
11. Tighten the oil filter element cover
bolts and the oil filter element
drain bolt to their specified
torques.
12. Install the engine oil drain bolts,
and then tighten them to their
specified torques.13. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil filler
cap.
NOTICE
ECAM1063
The engine oil tank must be filled in
2 steps. First, fill the engine oil tank
with 1.90 L (2.0 US qt, 1.67 Imp.qt) of
the recommended engine oil. Then,
start the engine, race it 5 or 6 times,
turn it off, and then add the remain-
der of the engine oil.
1. Oil filter element drain bolt
2. Oil filter element cover bolt
1. Oil filter element
2. O-ringTightening torques:
Oil filter element cover bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Oil filter element drain bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Tightening torques:
Engine oil drain bolt (crankcase):
30 Nm
Engine oil drain bolt (oil tank):
18 Nm
Recommended engine oil:
See page 8-1.
Oil quantity:
Without oil filter element replace-
ment:
2.50 L (2.64 US qt, 2.20 Imp.qt)
With oil filter element replacement:
2.60 L (2.75 US qt, 2.29 Imp.qt)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-13
6
TIPBe sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.NOTICE
ECA11621
In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a high-
er quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.
Make sure that no foreign mate-
rial enters the crankcase.14. 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.
15. Turn the engine off, and then
check the oil level and correct it if
necessary.16. Install the engine guard by install-
ing the screws.
EAU20071
CoolantThe coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU20257
To check the coolant level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.TIPThe coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in a false reading.2. Check the coolant level in the
coolant reservoir.TIPThe coolant should be between the
minimum and maximum level marks.
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-23
6
EAU22733
Changing the brake fluidHave a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and lubrica-
tion chart. In addition, have the oil seals
of the master cylinders and calipers as
well as the brake hoses replaced at the
intervals listed below or whenever they
are damaged or leaking.
Oil seals: Replace every two
years.
Brake hoses: Replace every four
years.
EAU22762
Drive chain slackThe drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU22786
To check the drive chain slack
1. Place the motorcycle on the side-
stand.TIPWhen checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.2. Shift the transmission into the
neutral position.
3. Measure the drive chain slack as
shown.4. If the drive chain slack is incorrect,
adjust it as follows.
TIPWhen checking the drive chain slack,
the chain tensioner should not be
touching the drive chain.
EAU34318
To adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack.
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
2. To tighten the drive chain, turn the
drive chain slack adjusting bolt on
each side of the swingarm in di-
rection (a). To loosen the drive
chain, turn the adjusting bolt on
each side of the swingarm in di-
rection (b), and then push the rear
wheel forward. NOTICE: Improp-
er drive chain slack will over-
load the engine as well as other
vital parts of the motorcycle and
can lead to chain slippage or
breakage. To prevent this from
1. Drive chain slack
Drive chain slack:
50.0–60.0 mm (1.97–2.36 in)
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![YAMAHA XT660Z 2015 User Guide PERIODIC MAINTENANCE AND ADJUSTMENT
6-24
6occurring, keep the drive chain
slack within the specified limits.
[ECA10572]
TIPUsing the alignment marks on each
side of the swingarm, make sure that
both d YAMAHA XT660Z 2015 User Guide PERIODIC MAINTENANCE AND ADJUSTMENT
6-24
6occurring, keep the drive chain
slack within the specified limits.
[ECA10572]
TIPUsing the alignment marks on each
side of the swingarm, make sure that
both d](/img/51/53212/w960_53212-67.png)
PERIODIC MAINTENANCE AND ADJUSTMENT
6-24
6occurring, keep the drive chain
slack within the specified limits.
[ECA10572]
TIPUsing the alignment marks on each
side of the swingarm, make sure that
both drive chain pullers are in the same
position for proper wheel alignment.3. Tighten the axle nut, then the lock-
nuts to their specified torques.4. Make sure that the drive chain
pullers are in the same position,
the drive chain slack is correct,
and the drive chain moves
smoothly.
EAU23026
Cleaning and lubricating the
drive chainThe drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.NOTICE
ECA10584
The drive chain must be lubricated
after washing the motorcycle, riding
in the rain or riding in wet areas.1. Clean the drive chain with kero-
sene and a small soft brush.
NOTICE: To prevent damaging
the O-rings, do not clean the
drive chain with steam cleaners,
high-pressure washers or inap-
propriate solvents.
[ECA11122]
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive
chain with a special O-ring chain
lubricant. NOTICE: Do not use
engine oil or any other lubri-
cants for the drive chain, as they
1. Axle nut
2. Drive chain slack adjusting bolt
3. Locknut
4. Alignment marks
Tightening torques:
Axle nut:
104 Nm
Locknut:
16 Nm
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MOTORCYCLE CARE AND STORAGE
7-1
7
EAU37834
Matte color cautionNOTICE
ECA15193
Some models are equipped with
matte colored finished parts. Be
sure to consult a Yamaha dealer for
advice on what products to use be-
fore cleaning the vehicle. Using a
brush, harsh chemical products or
cleaning compounds when cleaning
these parts will scratch or damage
their surface. Wax also should not
be applied to any matte colored fin-
ished parts.
EAU26005
CareWhile the open design of a motorcycle
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go un-
noticed on a car, however, it detracts
from the overall appearance of a mo-
torcycle. Frequent and proper care
does not only comply with the terms of
the warranty, but it will also keep your
motorcycle looking good, extend its
life and optimize its performance.
Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
2. Make sure that all caps and cov-
ers as well as all electrical cou-
plers and connectors, including
the spark plug cap, are tightly in-
stalled.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod-ucts onto seals, gaskets, sprock-
ets, the drive chain and wheel
axles. Always rinse the dirt and
degreaser off with water.
Cleaning
NOTICE
ECA10773
Avoid using strong acidic wheel
cleaners, especially on spoked
wheels. If such products are
used on hard-to-remove dirt, do
not leave the cleaner on the af-
fected area any longer than in-
structed. Also, thoroughly rinse
the area off with water, immedi-
ately dry it, and then apply a cor-
rosion protection spray.
Improper cleaning can damage
plastic parts (such as cowlings,
panels, windshields, headlight
lenses, meter lenses, etc.) and
the mufflers. Use only a soft,
clean cloth or sponge with wa-
ter to clean plastic. However, if
the plastic parts cannot be thor-
oughly cleaned with water, di-
luted mild detergent with water
may be used. Be sure to rinse
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MOTORCYCLE CARE AND STORAGE
7-3
74. To prevent corrosion, it is recom-
mended to apply a corrosion pro-
tection spray on all metal,
including chrome- and nickel-plat-
ed, surfaces.
5. Use spray oil as a universal clean-
er to remove 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.
WARNING
EWA11132
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 deter-
gent. Before riding at higher
speeds, test the motorcycle’s
braking performance and cor-
nering behavior.
NOTICE
ECA10801
Apply spray oil and wax spar-
ingly 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
compounds as they will wear
away the paint.TIPConsult a Yamaha dealer for ad-
vice 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.
EAUM1903
StorageShort-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 sys-
tem are cool before covering the mo-
torcycle.NOTICE
ECA10811
Storing the motorcycle in a
poorly ventilated room or cover-
ing it with a tarp, while it is still
wet, will allow water and humid-
ity to seep in and cause rust.
To prevent corrosion, avoid
damp cellars, stables (because
of the presence of ammonia)
and areas where strong chemi-
cals are stored.Long-term
Before storing your motorcycle for sev-
eral months:
1. Follow all the instructions in the
“Care” section of this chapter.
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MOTORCYCLE CARE AND STORAGE7-4
7 2. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting 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 spark-
ing during the next step.)
d. Turn the engine over several
times with the starter. (This will
coat the cylinder wall with oil.)
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 elec-
trodes while turning the en-
gine over.
[EWA10952]
4. Lubricate all control cables and
the pivoting points of all levers and
pedals as well as of the side-
stand/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. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlets with
plastic bags to prevent moisture
from entering them.
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 ex-
cessively cold or warm place [less
than 0 °C (30 °F) or more than 30
°C (90 °F)]. For more information
on storing the battery, see page
6-29.TIPMake any necessary repairs before
storing the motorcycle.
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SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2246 mm (88.4 in)
Overall width:
896 mm (35.3 in)
Overall height:
XT660Z 1477 mm (58.1 in)
XT660ZA 1450 mm (57.1 in)
Seat height:
XT660Z 896 mm (35.3 in)
XT660ZA 865 mm (34.1 in)
Wheelbase:
XT660Z 1500 mm (59.1 in)
XT660ZA 1505 mm (59.3 in)
Ground clearance:
XT660Z 260 mm (10.24 in)
XT660ZA 205 mm (8.07 in)
Minimum turning radius:
XT660Z 1958 mm (77.1 in)
XT660ZA 1980 mm (78.0 in)Weight:Curb weight:
XT660Z 206 kg (454 lb)
XT660ZA 215 kg (474 lb)Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Single cylinder
Displacement:
660 cm³
Bore × stroke:
100.0 × 84.0 mm (3.94 × 3.31 in)Compression ratio:
10.0 : 1
Starting system:
Electric starter
Lubrication system:
Dry sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 10W-40, 15W-40, 20W-40 or
20W-50
Recommended engine oil grade:
API service SE type or higher, JASO
standard MA
Engine oil quantity:
Without oil filter element replacement:
2.50 L (2.64 US qt, 2.20 Imp.qt)
With oil filter element replacement:
2.60 L (2.75 US qt, 2.29 Imp.qt)
Coolant quantity:Coolant reservoir (up to the maximum level
mark):
0.50 L (0.53 US qt, 0.44 Imp.qt)
Radiator (including all routes):
1.70 L (1.80 US qt, 1.50 Imp.qt)Air filter:Air filter element:
Dry elementFuel:Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
23.0 L (6.07 US gal, 5.06 Imp.gal)
Fuel reserve amount:
XT660Z 6.7 L (1.77 US gal, 1.47 Imp.gal)
XT660ZA 5.8 L (1.53 US gal, 1.28 Imp.gal)Fuel injection:Throttle body:
ID mark:
5YK2 11Spark plug(s):Manufacturer/model:
NGK/CR7E
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)Clutch:Clutch type:
Wet, multiple-discTransmission:Primary reduction ratio:
75/36 (2.083)
Final drive:
Chain
–20 –10 0
1020 30 40 50 C 10 30 50 70 90 110 0 130 F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
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SPECIFICATIONS
8-3
8
Rear brake:Type:
Single disc brake
Operation:
Right foot operation
Specified brake fluid:
DOT 4Front suspension:Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
XT660Z 210 mm (8.3 in)
XT660ZA 160 mm (6.3 in)Rear suspension:Type:
Swingarm (link suspension)
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
XT660Z 200 mm (7.9 in)
XT660ZA 145 mm (5.7 in)Electrical system:Ignition system:
TCI
Charging system:
AC magnetoBattery:Model:
XT660Z GT9B-4
XT660ZA YTZ10SVoltage, capacity:
XT660Z 12 V, 8.0 Ah
XT660ZA 12 V, 8.6 Ah
Headlight:Bulb type:
Halogen bulbBulb voltage, wattage × quantity:Headlight:
12 V, 55.0 W × 2
Tail/brake light:
LED
Front turn signal light:
12 V, 10.0 W × 2
Rear turn signal light:
12 V, 10.0 W × 2
Auxiliary light:
12 V, 3.0 W × 2
License plate light:
12 V, 5.0 W × 1
Meter lighting:
LED
Neutral indicator light:
LED
High beam indicator light:
LED
Turn signal indicator light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
ABS warning light:
XT660ZA LEDImmobilizer system indicator light:
LED
Fuses:Main fuse:
30.0 A
Headlight fuse:
20.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
10.0 A
Parking lighting fuse:
10.0 A
Radiator fan motor fuse:
7.5 A
Fuel injection system fuse:
10.0 A
ABS control unit fuse:
XT660ZA 5.0 A
ABS motor fuse:
XT660ZA 30.0 A
ABS solenoid fuse:
XT660ZA 20.0 A
Backup fuse:
10.0 A
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