Operation an
d
important ri
d
in
g
points
6-1
6
EAU15952
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10272
Failure to familiarize yourself with
the controls can lea
d
to loss of con-
trol, which coul
d
cause an acci
d
ent
or injury.
EAU16851
En
g
ine
b
reak-in
There is never a more important period
in the life of your engine than the first
20 hours of riding. For this reason, you
should read the following material
carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
20 hours of operation. The various
parts in the engine wear and polish
themselves to the correct operating
clearances. During this period, pro-
longed full-throttle operation or any
condition that might result in engine
overheating must be avoided. Howev-
er, momentary full-throttle operation
under load (i.e., two to three seconds
maximum) does not harm the engine.
Each full-throttle acceleration should
be followed with a substantial rest pe-
riod for the engine. To allow the engine
to cool down from the temporary build-
up of heat, cruise at a lower engine
speed.
0–10 hours
Avoid prolonged operation above
1/2 throttle.
After every hour of operation, stop
the engine, and then let it cool for
five to ten minutes.
Vary the engine speed from time
to time. Do not operate the engine
at one set throttle position.
10–20 hours
Avoid prolonged operation above
3/4 throttle.
Rev the engine freely through the
gears, but do not use full throttle at
any time.
After
b
reak-in
Avoid prolonged full-throttle operation.
Vary the engine speed occasionally.
NOTICE
ECA10271
If any en
g
ine trou
b
le shoul
d
occur
d
urin
g
the en
g
ine
b
reak-in perio
d
,
imme
d
iately have a Yamaha
d
ealer
check the vehicle.
UBSR81E0.book Page 1 Monday, April 3, 2023 10:39 AM
