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.
EAU41508
En
g
ine
b
reak-in
WARNING
EWA10322
Failure to properly maintain the vehi-
cle or performin
g
maintenance ac-
tivities incorrectly may increase
your risk of injury or
d
eath
d
urin
g
service or while usin
g
the vehicle. If
you are not familiar with vehicle ser-
vice, have a Yamaha
d
ealer perform
service.
TIP
Before starting the engine for the first
time, the air filter must be lubricated.
(See page 7-11.)
En
g
ine
b
reak-in proce
d
ure
1. Fill the fuel tank with a break-in oil-
fuel mixture as follows.
2. Start and warm up the engine.
Check the operation of the con-
trols and the engine stop switch.
(See page 4-1.)
3. Operate the motorcycle in the
lower gears at moderate throttle
openings for 5 to 8 minutes. Stop
the engine and check the spark
plug condition (see page 7-7); it
will show a rich condition during
break-in.
4. Allow the engine to cool. Restart
the engine and operate the motor-
cycle as in the step above for 5
minutes. Then, very briefly shift to
the higher gears and check the
full-throttle response. Stop the en-
gine and check the spark plug.
5. After again allowing the engine to
cool, restart and run the motorcy-
cle for 5 more minutes. Full throttle
and the higher gears may be used,
but sustained full-throttle opera-
tion should be avoided. Stop the
engine and check the spark plug
again.
6. Allow the engine to cool, remove
the cylinder head and cylinder,
and inspect the piston and cylin-
Recommen
d
e
d
2-stroke en
g
ine oil:
YAMALUBE 2R
Mixin
g
ratio (
g
asoline to oil):
15:1
UB4B13E0.book Page 1 Wednesday, August 25, 2021 7:15 AM
