Exup System - Yamaha R1 Owner's Manual

Instrument and control functions
thereby harden the suspension,
1
turn the adjusting ring in direction
(a). To decrease the spring pre-
2
load and thereby soften the sus-
pension, turn the adjusting ring in
direction (b).
3
The spring preload setting is deter-
mined by measuring distance A.
4
The longer distance A is, the high-
er the spring preload; the shorter
distance A is, the lower the spring
5
preload.

Use the special wrench in the
6
owner's tool kit to make the ad-
justment.
7
8
1
(a)
9
10
11
1. Spring preload adjusting ring
2. Locknut
12
1. Distance A
Spring preload:
Minimum (soft):
Distance A = 0 mm (0.00 in)
Standard:
Distance A = 4 mm (0.16 in)
Maximum (hard):
2
Distance A = 9 mm (0.35 in)
(b)
3. Tighten the locknut to the specified
torque. NOTICE: Always tighten
the locknut against the adjust-
ing ring, and then tighten the
locknut
torque.
[ECA22760]
Tightening torque:
Locknut:
25 Nm (2.5 m·kgf, 18 ft·lbf)

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 controls
exhaust flow within the exhaust cham-
ber.
1
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.
to the specified
5-45
NOTICE
EAU67050
ECA15611