2022 YAMAHA YZF-R1 compression ratio

Special features
3-4
3

Engine speed sufficiently away
from red zone
 Decelerating and throttle fully-
closed
TIPQS and QS can be individ-
ually set.
 Shifting into or out of neutral must
be done using the clutch lever.LIF
The lift control system reduces the rate
at which the front wheel will continue to
rise during extreme acceleration, such
as during starts or out-of-corner exits.
When front-wheel lift is detected, en-
gine power is regulated to slow front-
wheel lift while still providing good ac-
celeration.
BC
The brake control system regulates hy-
draulic brake pressure for the front and
rear wheels when the brakes are ap-
plied and wheel lock is detected. This
system has two settings. BC1 is standard ABS, which adjusts
brake pressure based on vehicle
speed and wheel speed data. BC1 is
designed to engage and maximize
braking when the vehicle is upright.
BC2 uses additional data from the IMU
to regulate applied brake power when
cornering to suppress lateral wheel
slip.
WARNING
EWA20891
The
brake control system is not a
su bstitute for the use of proper ri d-
in g an d brakin g techniques. The
b rake control system cannot pre-
vent all loss of traction due to over- b
rakin g from excessive spee d, or
lateral wheel slip when brakin g on
slippery surfaces.
ERS (YZF-R1M)
The electronic racing suspension by
ÖHLINS
® features OBTi (objective-
based tuning interface) for simplified,
situation-focused setting changes of
the automatic suspension control
modes. In addition, there are manual
modes which offer a finely-tuneable
traditional suspension set-up. The ERS
system is controlled by the SCU which
can adjust the front and rear suspen-
sion’s compression stroke and re-
bound stroke damping forces
independently. The automatic modes
will adjust suspension damping forces
based on running conditions.
ABS
BC1/BC2 BC2 BC2
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Instrument and control functions
4-20
4
or for YZF-R1M select the “ ”
mark to fine tune the ERS mode
settings.
ERS (YZF-R1M)
The ERS consists of three semi-active
automatic modes (T-1, T-2, and R-1)
and three manual setting modes (M-1,
M-2, and M-3). When an automatic
mode is selected, the SCU will adjust
the compression and rebound damp- ing forces based on running condi-
tions. For all modes and models,
spring preload is physically adjusted
by hand. (See pages 4-42 and 4-45.)
For track modes T-1 and T-2, the fol-
lowing settings can be adjusted:
BRAKE SUPPORT: reduces nosedive
(front-end pitch from braking)
CORNER SUPPORT: increases damp-
ing to absorb chassis fluctuations for
smooth cornering. Reduce this setting
for increased rear wheel grip.
ACCEL SUPPORT: reduces rear-end
squat (rear-end pitch due to accelera-
tion)
FRONT FIRM: hardens (H) or softens
(S) overall damping of the front sus-
pension
REAR FIRM: hardens (H) or softens (S)
overall damping of the rear suspension
For the road mode R-1, the following
settings can be adjusted:
BRAKE SUPPORT: reduces nosedive
(front-end pitch from braking)
FRONT FIRM: hardens (H) or softens
(S) overall damping of the front sus-
pension
REAR FIRM: hardens (H) or softens (S)
overall damping of the rear suspension
TIP
T-1 is preset for track use with
racing slick tires.
1. ERS mode
2. Braking support level
3. Cornering support level
4. Acceleration support level
5. Front overall damping level
6. Rear overall damping level
7. Factory preset level
8. Current level
SETTING BRAKE
SUPPORT CORNER
SUPPORT
ACCELSUPPORT
FRONT FIRM REAR
FIRM
10 :
00
YRC Setting
km/hT -
1
H -2
S H
+2
S
T -
2
R -
1
1
34 8
5 7
6
2
1. ERS mode
2. Braking support level
3. Front overall damping level
4. Rear overall damping level
5. Factory preset level
6. Current level
SETTING
BRAKE
SUPPORT
FRONT
FIRM REAR
FIRM
10 :
00
YRC Setting
km/hR -
1
H -2
S H
+2
S
T -
1
T -
2
34
2
6
5
1
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Periodic maintenance and adjustment
7-37
7
TIPThe right headlight comes on
when Pass/LAP switch “ /LAP”
is pushed or the dimmer switch is
set to “ ” (high beam).
 The auxiliary lights were designed
to fade out as your R1 goes to
sleep.
EAU67131
Supporting the motorcycleSince this model is not equipped with a
centerstand, use maintenance stands
when removing the front or rear wheel
or when performing other maintenance
that requires the motorcycle to stand
up right.
Check that the motorcycle is in a stable
and level position before starting any
maintenance.
EAU25872
TroubleshootingAlthough Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from water
1. Maintenance stand (example)
1
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