2021 YAMAHA YXZ1000R compression ratio

5-28
5
EBU35660Flag pole bracketThis model is equipped with a flag pole brack-
et.NOTICEECB03010Do not use the flag pole bracket as a cargo
hook. EBU40060Front shock absorbersThe shock absorber assemblies are equipped
with the following adjusters.
Spring preload adjusting nut
 Rebound damping force adjusting screw
 High speed compression damping force
adjusting bolt
 Low speed compression damping force
adjusting screw
 Crossover adjusting nut
WARNING
EWB04140Suspension components become hot
during operation. Never touch the com-
pression damping force adjusting bolt
and screw, the rebound damping force
adjusting bolt and screw, or the oil reser-
voir with your bare hand or skin until
suspension components have cooled.
 Always adjust the shock absorber as-
semblies on the left and right side to the
same setting. Uneven adjustment can
cause poor handling and loss of stability,
which could lead to an accident.
1. Flag pole bracket
1
1
UB5J7CE0.book Page 28 Thursday, November 26, 2020 1:37 PM

5-36
5
Do not deform or damage the cylinders
in any way. Cylinder damage will result in
poor damping performance.
 Do not dispose of a damaged or worn
out shock absorber assembly yourself.
Take the shock absorber assembly to a
Yamaha dealer for any service. EBU40070Rear shock absorbersThe shock absorber assemblies are equipped
with the following adjusters.
 Spring preload adjusting nut
 Rebound damping force adjusting screw
 High speed compression damping force
adjusting bolt
 Low speed compression damping force
adjusting screw
 Crossover adjusting nut
WARNING
EWB04140Suspension components become hot
during operation. Never touch the com-
pression damping force adjusting bolt
and screw, the rebound damping force
adjusting bolt and screw, or the oil reser-
voir with your bare hand or skin until
suspension components have cooled.
 Always adjust the shock absorber as-
semblies on the left and right side to the
same setting. Uneven adjustment can
cause poor handling and loss of stability,
which could lead to an accident. Notes on adjusting the suspension
A special wrench and special tool can be
obtained at a Yamaha dealer to make the
spring preload or crossover setting adjust-
ment.
UB5J7CE0.book Page 36 Thursday, November 26, 2020 1:37 PM

9-66
9
EBU37910Brake/tail lightThis model is equipped with an LED brake/tail
light, there are no replaceable bulbs.
If the brake/tail light does not come on, check
for a loose connection, check the fuses, and
then have a Yamaha dealer check the vehicle.EBU32700TroubleshootingAlthough Yamaha vehicles receive an inspec-
tion before shipment from the factory, trouble
may occur during operation. Any problem inthe fuel, compression, or ignition systems can
cause poor starting and loss of power. The
troubleshooting chart describes a quick, easy
procedure for making checks. If your vehicle
requires any repair, take it to a Yamaha deal-
er.
The skilled technicians at a Yamaha dealer-
ship have the tools, experience, and know-
how to properly service your vehicle. Use only
genuine Yamaha parts on your vehicle. Imita-
tion parts may look like Yamaha parts, but
they are often inferior. Consequently, they
have a shorter service life and can lead to ex-
pensive repair bills.
WARNING
EWB03450When checking the fuel system, do not
smoke and make sure there are no open
flames or sparks in the area, including pilot
lights from water heaters or furnaces.
1. Headlight beam adjusting screw
(b)
(a)
1
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11-2
11
Compression ratio:11.3 : 1
Starting system: Electric starter
Lubrication system:
Dry sumpEngine oil:Recommended brand:
SAE viscosity grades:5W-30, 10W-30, 10W-40, 15W-40, 20W-40, 20W-50 Recommended engine oil grade:
API service SG type or higher, JASO standard MA
Quantity: Oil change:2.50 L (2.64 US qt, 2.20 Imp.qt)
With oil filter removal: 2.70 L (2.85 US qt, 2.38 Imp.qt)
Transmission oil:Type:SAE 5W-30, 10W-30, 10W-40, 15W-40, 20W-40 or 20W-
50
Recommended transmission oil grade: API service SE, SF, SG type or higher, JASO standard
MA
Quantity: 1.50 L (1.59 US qt, 1.32 Imp.qt)0 10 30 50 70 90 110 130 ˚F
–20 –10 0 10 20 30 40 50 ˚CSAE 5W-30
SAE 10W-30
SAE 10W-40
SAE 15W-40
SAE 20W-40SAE 20W-50
UB5J7CE0.book Page 2 Thursday, November 26, 2020 1:37 PM