Yamaha TZ250M1 Owner's Service Manual page 33

STARTING AND BREAK-IN
EC193031
STARTING A WARM ENGINE
Do not push the starter lever (CHOKE). Open
the throttle slightly and start the engine.
C C CAUTION:
Observe the following break-in procedure
during initial operation to ensure optimum
performance and avoid engine damage.
EC194020
BREAK-IN PROCEDURES
1. Before starting the engine, fill the fuel tank
with a break-in oil-fuel mixture as follows.
2
Mixing oil
2. Perform the pre-operation checks on the
machine.
3. Start and warm up the engine. Check the
operation of the controls and check that the
engine comes to a stop when moving the
main switch to "OFF".
NOTE:
During break-in, mask part of the radiator core
so that the water temperature is 55 ~ 65˚C
(131 ~ 149˚F).
4. Operate the machine under 8,000 r/min and
run on a course about 10 km (6 miles).
While making a straight-line run, open the
throttle from time to time, taking care not to
exceed the revolution limit.
5. Go back to the pit to check for looseness,
leakage, and other failures in installation.
6. Next, operate the machine under 9,000
r/min and run about 10 km (6 miles).
(While running in this way, get an idea of
the riding position and approximate set-
tings.)
7. Go back to the pit again, check the machine
fully for looseness, leakage, and other fail-
ures in installation, especially for loose
cables and wires, excessive brake free
play, and a chain slack. Also make adjust-
ment for a riding position according to your
preference.
1-18
GEN
INFO
Recommended oil:
Castrol A747
Mixing ratio: 30 : 1