Yamaha YZF R1 2021, Руководство пользователя

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Instrument and control functions
5-46
5
higher the spring preload; the
shorter distance A is, the lower the
spring preload.

Use the special wrench in the
tool kit to make the adjust-
ment.
3. Tighten the locknut to the speci-
fied torque.
NOTICE:
Always
tighten the locknut against the
adjusting nut, and then tighten
the locknut to the specified
torque.
[ECA10122]
NOTICE
ECA10102
To avoid damaging the mechanism,
do not attempt to turn beyond the
maximum or minimum settings.
EAU67050
EXUP system
This model is equipped with Yamaha’s
EXUP (EXhaust Ultimate Power valve)
system. This system boosts engine
power by means of a valve that con-
trols exhaust flow within the exhaust
chamber.
NOTICE
ECA15611
The EXUP system has been set and
extensively tested at the Yamaha
factory. Changing these settings
without sufficient technical knowl-
edge may result in poor perfor-
mance of or damage to the engine.
1. Spring preload adjusting nut
2. Locknut
1. Distance A
1
(a)
(b)
2
1
Spring preload:
Minimum (soft):
Distance A = 0.0 mm (0.00 in)
Standard:
Distance A = 4.0 mm (0.16 in)
Maximum (hard):
Distance A = 9.0 mm (0.35 in)
Tightening torque:
Locknut:
25 N·m (2.5 kgf·m, 18 lb·ft)
UB3L12E0.book Page 46 Thursday, July 29, 2021 4:13 PM