Page 20 of 120
INSTRUMENT AND CONTROL FUNCTIONS
3-5
3
CB-25E
Coolant
temperatureDisplay Conditions What to do0–39 °CMessage “LO” is
displayed.OK. Go ahead with riding.
40–116 °CTemperature is
displayed.OK. Go ahead with riding.
117–139 °CTemperature flashes.
Warning light comes on.Stop the motorcycle and allow it to
idle until the coolant temperature
goes down.
If the temperature does not go
down, stop the engine. (See the
“Engine overheating” section on
page 6-47 for further instructions.)
Above 140 °CMessage “HI” flashes.
Warning light comes on.Stop the engine and allow it to cool.
(See the “Engine overheating” sec-
tion on page 6-47 for further in-
structions.)
U5PWE1.book Page 5 Monday, July 8, 2002 10:28 AM
Page 50 of 120
OPERATION AND IMPORTANT RIDING POINTS
5-3
5
EAU02937
Recommended shift points
(for Switzerland only) The recommended shift points during
acceleration are shown in the table be-
low.CF-02ENOTE:_ When shifting down two gears at a
time, reduce the speed accordingly
(e.g., down to 35 km/h when shifting
from 5th to 3rd gear). _
EAU04754
Tips for reducing fuel
consumption Fuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:
Shift up swiftly, and avoid high en-
gine speeds during acceleration.
Do not rev the engine while shift-
ing down, and avoid high engine
speeds with no load on the engine.
Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at traf-
fic lights or at railroad crossings).
EAU01128
Engine break-in There is never a more important period
in the life of your engine than the period
between 0 and 1,600 km. For this rea-
son, you should read the following ma-
terial carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1,600 km. The various parts in the en-
gine wear and polish themselves to the
correct operating clearances. During
this period, prolonged full-throttle oper-
ation or any condition that might result
in engine overheating must be avoided.
Shift point
(km/h)
1st→2nd
2nd→3rd
3rd→4th
4th→5th
5th→6th20
30
40
50
60
U5PWE1.book Page 3 Monday, July 8, 2002 10:28 AM
Page 100 of 120
PERIODIC MAINTENANCE AND MINOR REPAIR
6-47
6Engine overheating
EW000070
WARNING
_
Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hiss-
ing sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
_CT-2AENOTE:_ If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant
as soon as possible. _
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See NOTE.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
U5PWE1.book Page 47 Monday, July 8, 2002 10:28 AM
