Page 18 of 99

INSTRUMENT AND CONTROL FUNCTIONS
3-4
3 Selecting a mode
Push the “SELECT” button to change
between the odometer mode “ODO”
and the trip odometer modes “TRIP 1”,
“TRIP 2” and “CLOCK” in the following
order:
“ODO”
® “TRIP 1”
® “TRIP 2”
®
“CLOCK”
® “ODO”
Resetting a trip meterTo reset a trip odometer to 0.0, select it
by pushing the “SELECT” button and
push the “RESET” button for at least
one second.
Clock mode
To change the display to the clock
mode, push both the “SELECT” and
“RESET” buttons.
To change the display back to the
odometer mode, push the “SELECT”
button.To set the clock
1. Push both the “SELECT” and
“RESET” buttons for at least two
seconds.
2. When the hour digits start flashing,
push the “RESET” button to set
the hours.
3. Push the “SELECT” button to
change the minutes.
4. When the minute digits start flash-
ing, push the “RESET” button to
set the minutes.
5. Push the “SELECT” button to start
the clock.NOTE:@ After setting the clock, be sure to push
the “SELECT” button before turning the
main switch to “OFF”, otherwise the
clock will not be set. @
EAU00101
TachometerThis model is equipped with an electric
tachometer so the rider can monitor the
engine speed and keep it within the
ideal power range.
EC000003
CAUTION:@ Do not operate in the red zone.
Red zone: 8,000 r/min and above @1. Tachometer
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INSTRUMENT AND CONTROL FUNCTIONS
3-5
3
EAU00103
Diagnosis deviceThis model is equipped with a diagno-
sis device for the Throttle Position Sen-
sor (T.P.S.) circuit.
If some trouble should occur in the cir-
cuit, the tachometer will repeatedly dis-
play as follows:CB-61EIf the tachometer displays as described
above, take your motorcycle to a
Yamaha dealer for repair.
EC000004
CAUTION:@ To prevent engine damage, be sure
to consult a Yamaha dealer as soon
as possible if the tachometer dis-
plays a repeated change in r/min. @
EAU00109
Antitheft alarm (optional)An antitheft alarm can be equipped to
this motorcycle. Consult your Yamaha
dealer to obtain and install the alarm.
EAU00110
Fuel gaugeThis model is equipped with an electric
fuel gauge so the rider can monitor the
fuel level in the fuel tank. When the
needle indicates “E” (Empty), about
3.1 L remain in the fuel tank.
0 r/min for
3 seconds.
3,000 r/min
for 2.5 sec-
onds.
Current en-
gine r/min for
3 seconds.
1. Fuel gauge
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INSTRUMENT AND CONTROL FUNCTIONS
3-11
3
EAU01183
FuelMake sure there is sufficient fuel in the
tank. Fill the fuel tank to the bottom of
the filler tube as shown in the illustra-
tion.
EW000130
WARNING
@ Do not overfill the fuel tank. Avoid
spilling fuel on the hot engine. Do
not fill the fuel tank above the bot-
tom of the filler tube or it may over-
flow when the fuel heats up later and
expands. @
EAU00186
CAUTION:@ l
Always wipe off spilled fuel im-
mediately with a dry and clean
soft cloth. Fuel may deteriorate
painted surfaces or plastic
parts.
l
(For Germany only)
The fuel tank cap equipped on
German models is specially de-
signed. Always use the correct
cap whenever replacement is
necessary.
@
EAU00191
NOTE:@ If knocking or pinging occurs, use a dif-
ferent brand of gasoline or higher oc-
tane grade. @
1. Filler tube
2. Fuel level
Recommended fuel:
Regular unleaded gasoline with a
research octane number of 91 or
higher.
Fuel tank capacity:
Total:
20 L
Reserve:
3.1 L
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Page 89 of 99

8-1
8
EAU01038
8-SPECIFICATIONSSpecifications
Model TDM850
Dimensions
Overall length 2,165 mm
(for GB, NL, B, F, E, P, I, GR, D,
DK)
2,200 mm (for N, S, SF)
Overall width 790 mm
Overall height 1,285 mm
Seat height 805 mm
Wheelbase 1,475 mm
Ground clearance 165 mm
Minimum turning radius 2,900 mm
Basic weight (with oil and full
fuel tank)
232 kg
Engine
Engine type Liquid cooled 4-stroke, DOHC
Cylinder arrangement Forward inclined parallel
2-cylinder
Displacement 849 cm
3
Bore ´ Stroke 89.5 ´ 67.5 mm
Compression ratio 10.5:1
Starting system Electric starter
Lubrication system Dry sumpEngine oil
Ty p e
Recommended engine oil
classification API Service SE, SF, SG type or
higher
Quantity
Periodic oil change 3.5 L
With oil filter replacement 3.6 L
Total amount 4.2 L
Cooling system capacity
(total amount)
1.7 L
-20˚ -10˚ 0˚
10˚20˚ 30˚
40˚50˚C
SAE 10W/30
SAE 15W/40SAE 20W/40SAE 20W/50
SAE 10W/40
CAUTION:Be sure to use motor oils that do not contain anti-friction
modifiers. Passenger car motor oils (often labeled
“Energy Conserving”) contain anti-friction additives which
will cause clutch and/or starter clutch slippage, resulting in
reduced component life and poor engine performance.
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Page 90 of 99
SPECIFICATIONS
8-2
8
Air filterDry type element
Fuel
Type Regular unleaded gasoline
Fuel tank capacity 20 L
Reserve amount 3.1 L
Carburetor
Type ´ quantity BDSR38 ´ 2
Manufacturer MIKUNI
Spark plug
Manufacturer/Type NGK / DPR8EA-9 or
DENSO / X24EPR-U9
Gap 0.8 ~ 0.9 mm
Clutch typeWet, multiple-disc
Transmission
Primary reduction system Spur gear
Primary reduction ratio 1.718
Secondary reduction system Chain drive
Secondary reduction ratio 2.688
Number of sprocket teeth
(rear/front) 43/16
Transmission type Constant mesh 5-speed
Operation Left foot operationGear ratio
1st 2.643
2nd 1.947
3rd 1.500
4th 1.174
5th 0.964
Chassis
Frame type Diamond
Caster angle 24.5°
Trail 103 mm
Tires
Front
Type Tubeless
Size 110/80 ZR18 (58W)
Manufacturer/
model Bridgestone / BT54F
Michelin / MACADAM 90X
Pirelli / MTR03
Rear
Type Tubeless
Size 150/70 ZR17 (69W)
Manufacturer/
model Bridgestone / BT54R
Michelin / MACADAM 90X
Pirelli / MTR04
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Page 94 of 99
CONSUMER INFORMATION
9
Identification number records ............................................................. 9-1
Key identification number ................................................................... 9-1
Vehicle identification number.............................................................. 9-1
Model label ......................................................................................... 9-2
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9-1
9
EAU01039
9-CONSUMER INFORMATION
EAU02944
Identification number recordsRecord the key identification number,
vehicle identification number and mod-
el label information in the spaces pro-
vided for assistance when ordering
spare parts from a Yamaha dealer or
for reference in case the vehicle is sto-
len.
1. KEY IDENTIFICATION NUMBER:CA-02E2. VEHICLE IDENTIFICATION
NUMBER:CA-02E3. MODEL LABEL INFORMATION:CA-01EEAU01041
Key identification numberThe key identification number is
stamped on the key tag. Record this
number in the space provided and use
it for reference when obtaining a new
key.
EAU01043
Vehicle identification numberThe vehicle identification number is
stamped into the steering head pipe.
Record this number in the space pro-
vided.NOTE:@ The vehicle identification number is
used to identify your motorcycle and
may be used to register your motor-
cycle with the licensing authority in
your state. @
1. Key identification number
1. Vehicle identification number
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Page 96 of 99
CONSUMER INFORMATION
9-2
9
EAU01050
Model labelThe model label is affixed to the frame
under the seat. (See page 3-12 for seat
removal procedures.) Record the infor-
mation on this label in the space pro-
vided. This information will be needed
to order spare parts from your Yamaha
dealer.1. Model label
E_4tx_Consumer.fm Page 2 Saturday, October 16, 1999 9:38 AM