Engine Break-In - Yamaha TT-R TT250RN Owner's Manual

OPERATION AND IMPORTANT RIDING POINTS

Engine break-in

There is never a more important peri-
1
od in the life of your engine than the
period between 0 and 1,000 km. For
this reason, you should read the fol-
2
lowing material carefully.
Since the engine is brand new, do
3
not put an excessive load on it for the
first 1,000 km. The various parts in
4
the engine wear and polish them-
selves to the correct operating clear-
5
ances. During this period, prolonged
full-throttle operation or any condition
6
that might result in engine overheat-
ing must be avoided.
7
8
9
EAU00436
0–150 km
8 Avoid prolonged operation above
1/3 throttle.
8 After every hour of operation,
stop the engine, and then let it
cool for five to ten minutes.
8 Vary the engine speed from time
to time. Do not operate the
engine at one set throttle posi-
tion.
150–500 km
8 Avoid prolonged operation above
1/2 throttle.
8 Rev the engine freely through
the gears, but do not use full
throttle at any time.
500–1,000 km
Avoid prolonged operation above 3/4
throttle.
EAU00443
cC
After 1,000 km of operation, the
engine oil must be changed and
the
replaced.
1,000 km and beyond
Avoid prolonged full-throttle opera-
tion. Vary the speed occasionally.
cC
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.
5-4
oil filter cartridge/element
EC000052
EC000049