2002 YAMAHA BEAR TRACKER 250 engine

5-13
EBU00485*
Engine oil
Make sure the engine oil is at the specified level.
Fill with oil as necessary. (See pages 8-13 ~ 8-21
for details.)
Recommended oil:
Recommended engine oil classification:
API Service SE, SF, SG type or higher
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
EE.book Page 13 Monday, June 25, 2001 2:27 PM

5-15
CAUTION:_ Be sure to use motor oils that do not contain
anti-friction modifiers. Passenger car motor
oils (often labeled “Energy Conserving II”)
contain anti-friction additives which will cause
clutch and/or starter clutch slippage, resulting
in reduced component life and poor engine
performance. _
Oil quantity:
Total amount:
1.5 L
Periodic oil change:
1.6 L
With oil filter replacement:
1.8 L
EE.book Page 15 Monday, June 25, 2001 2:27 PM

5-19
EBU00152
Fittings and Fasteners
Always check the tightness of chassis fittings and
fasteners before a ride. Take the machine to a
Yamaha dealer or refer to the Service Manual for
correct tightening torque.
EBU00803
Lights
Check the headlight and tail/brake light to make
sure they are in working condition. Repair as nec-
essary for proper operation.
EBU00912
Switches
Check the operation of the light switch, engine
stop switch and any other switches. Repair as nec-
essary for proper operation.
EBU00499
Battery
Check fluid level and fill if necessary. Use only dis-
tilled water if refilling is necessary. (See pages
8-71 ~ 8-77.)
EE.book Page 19 Monday, June 25, 2001 2:27 PM

6-3
EBU00501
Starting a cold engine
WARNING
_ Always make sure all control cables work
smoothly before you begin riding in cold
weather. If the control cables are frozen or do
not work smoothly, you could be unable to
control the ATV, which could lead to an acci-
dent or collision. _1. Set the parking brake.
2. Turn the fuel cock to “ON”.
3. Turn the main switch to “ON” and the engine
stop switch to “RUN”.
4. Shift the transmission into neutral.
EE.book Page 3 Monday, June 25, 2001 2:27 PM

6-5 1. Fully open 2. Half open
3. Closed a. Starter (choke)
1. Complètement ouvert 2. Mi-ouvert
3. Ferméa. Starter (enrichisseur)
1. Abre completamente 2. Semiabierto
3. Cerrado a. Starter (choke)
NOTE:_

When the transmission is in neutral, the neu-
tral indicator light should come on. If the light
does not come on, ask a Yamaha dealer to
inspect it.


The engine can be started in any gear if the
rear brake lever is applied. However, it is rec-
ommended to shift into neutral before starting
the engine.
_5. Use the starter (choke) in reference to the fig-
ure:
Position
1: Cold engine start-ambient tempera-
ture below 5°C.
Position
2: Cold engine start-ambient tempera-
ture at 0°C ~ 30°C and warming up
position.
Position
3: Cold engine start-ambient tempera-
ture above 25°C and warm engine
start position.
6. Completely close the throttle lever and start
the engine by pushing the start switch.
EE.book Page 5 Monday, June 25, 2001 2:27 PM

6-7
NOTE:_

If the engine fails to start, release the start
switch, then push the start switch again.
Pause a few seconds before the next at-
tempt. Each cranking should be as short as
possible to preserve battery energy. Do not
crank the engine more than 10 seconds on
each attempt.


If the battery is discharged, pull the recoil
starter to start the engine.
_7. If the engine is started with the starter (choke)
in position
1, the starter (choke) should be
returned to position
2 to warm up the en-
gine. If the engine is started with the starter
(choke) in position
2, keep the starter
(choke) in this position to warm up the en-
gine.
8. Continue warming up the engine until it idles
smoothly and return the starter (choke) to po-
sition
3 before riding.CAUTION:_ See the “Engine break-in” section prior to op-
erating engine for the first time. _
EE.book Page 7 Monday, June 25, 2001 2:27 PM

6-9
EBU00180
Starting a warm engine
To start a warm engine, refer to the “Starting a cold
engine” section. The starter (choke) should not be
used. The throttle should be opened slightly.
EBU00182
Warming up
To get maximum engine life, always warm up the
engine before starting off. Never accelerate hard
with a cold engine! To see whether or not the en-
gine is warm, check if it responds to the throttle
normally with the starter (choke) turned off.
EE.book Page 9 Monday, June 25, 2001 2:27 PM

6-15 1. Shift pedal N. Neutral
1. Pédale de sélection N. Point mort
1. Pedal del cambio N. Punto muerto
EBU00201
Shifting
This model has a 5-speed forward and 1-speed re-
verse transmission with centrifugal automatic
clutch. The transmission allows you to control the
amount of power you have available at a given
speed or for starting accelerating, climbing, etc. To
shift into neutral, return the throttle lever to its orig-
inal position and repeatedly depress the shift ped-
al until it stops.CAUTION:
Do not coast for long periods with the engine
off, and do not tow the machine a long dis-
tance. Even with gears in neutral, the transmis-
sion is only properly lubricated when the
engine is running. Inadequate lubrication may
damage the transmission.
EE.book Page 15 Monday, June 25, 2001 2:27 PM