warning YAMAHA BT1100 2002 User Guide

1
3
INSTRUMENT AND CONTROL FUNCTIONS
1. Helmet holders
12
1. Storage compartment
2. Yamaha U-LOCK
1
1. Tool kit compartment
EAUB0005
Helmet holders
The helmet holders are located under the
seat. Each of the two helmet-holding ca-
bles provided can be used to secure a hel-
met to either helmet holder
To secure a helmet to a helmet holder
1. Remove the seat. (See page 3-13 for
removal and installation procedures).
2. Pass the helmet holding cable
through the buckle on the helmet
strap as shown, and then hook the
cable loop over the helmet holder.
3. Install the seat.
EWA00015WARNING0
Never ride with a helmet attached to a
helmet holder, since the helmet may hit
objects, causing loss of control and
possibly an accident.
EAUB0006
Storage compartment
The storage compartment is located under
the seat. (See page 3-13 for seat removal
and installation procedures).
This storage compartment is designed to
hold a genuine Yamaha U-LOCK. (Other
locks may not fit).
The tool kit is located at the back of the
storage compartment and held in place
with a strap.
When storing the owner’s manual or other
documents in the storage compartment,
be sure to wrap them in a plastic bag so
that they will not get wet. When washing
the motorcycle, be careful not to let any
water enter the storage compartment.
3-14
EAU00027

INSTRUMENT AND CONTROL FUNCTIONS
1. Spring preload adjusting bolt 1. Setting
2. Front fork cap bolt




1. Spring preload adjusting nut
2. Locknut
EAU00285
Adjusting the front fork
This front fork is equipped with spring pre-
load adjusting bolts.
EW000035WARNING0
Always adjust both fork legs equally,
otherwise poor handling and loss of
stability may result.
Adjust the spring preload as follows.
To increase the spring preload and thereby
harden the suspension, turn the adjusting
bolt on each fork leg in direction a. To de-
crease the spring preload and thereby
soften the suspension, turn the adjusting
bolt on each fork leg in direction b.
NOTE:
Align the appropriate groove on the adjust-
ing mechanism with the top of the front
fork cap bolt.
EAUB0007
Adjusting the shock absorber
assembly
This shock absorber assembly is equipped
with a spring preload adjusting nut.
EC000015
Never attempt to turn an adjusting
mechanism beyond the maximum or
minimum settings.
Adjust the spring preload as follows.
1. Loosen the locknut.
2. To increase the spring preload and
thereby harden the suspension, turn
the adjusting nut in direction a. To
CAUTION:
3-15
3
EAU00027
Minimum (soft) Standard Maximum (hard)
Setting 1 2 3 4 5 6 7

INSTRUMENT AND CONTROL FUNCTIONS
decrease the spring preload and
thereby soften the suspension, turn
the adjusting nut in direction b.
NOTE:
Use the special wrench included in the
owner’s tool kit to make the adjustment.
The spring preload setting is determined
by measuring distance A, shown in the
illustration. The longer distance A is, the
higher the spring preload; the shorter dis-
tance A is, the lower the spring preload.
With each complete turn of the adjusting
nut, distance A changes by 1.5 mm.3. Tighten the locknut to the specified
torque.• Always have a Yamaha dealer ser-
vice the shock absorber.
EAU00330
Sidestand
The sidestand is located on the left side of
the frame. Raise the sidestand or lower it
with your foot while holding the motorcycle
upright.
NOTE:
The built-in sidestand switch is part of the
ignition circuit cut-off system, which cuts
the ignition in certain situations. (See fur-
ther down for an explanation of the ignition
circuit cut-off system).
3-16
3
Spring preload:
Minimum (soft):
Distance A = 170 mm
Standard:
Distance A = 162 mm
Maximum (hard):
Distance A = 154 mm
Tightening torque:
Locknut:
45 Nm (4.5 m•kg)
EAU00315WARNING0
This shock absorber contains highly
pressurized nitrogen gas. For proper
handling, read and understand the fol-
lowing information before handling the
shock absorber. The manufacturer can-
not be held responsible for property
damage or personal injury that may
result from improper handling.
•Do not tamper with or attempt to
open the gas cylinder.
•Do not subject the shock absorber
to an open flame or other high heat
sources, otherwise it may explode
due to excessive gas pressure.
•Do not deform or damage the gas
cylinder in any way, as this will
result in poor damping perfor-
mance.
EAU00027

INSTRUMENT AND CONTROL FUNCTIONS
EW000044WARNING0
The motorcycle must not be ridden
with the sidestand down, or if the side-
stand cannot be properly moved up (or
does not stay up), otherwise the side-
stand could contact the ground and
distract the operator, resulting in a pos-
sible loss of control.
Yamaha’s ignition circuit cut-off sys-
tem has been designed to assist the
operator in fulfilling the responsibility
of raising the sidestand before starting
off. Therefore, check this system regu-
larly as described below and have a
Yamaha dealer repair it if it does not
function properly.
EAU03720
Ignition circuit cut-off system
The ignition circuit cut-off system (com-
prising the sidestand switch, clutch switch
and neutral switch) has the following func-
tions.
•It prevents starting when the trans-
mission is in gear and the sidestand
is up, but the clutch lever is not
pulled.
•It prevents starting when the trans-
mission is in gear and the clutch lever
is pulled, but the sidestand is still
down.
•It cuts the running engine when the
transmission is in gear and the side-
stand is moved down.Periodically check the operation of the ig-
nition circuit cut-off system according to
the following procedure.
EW000045WARNING0
If a malfunction is noted, have a Yamaha
dealer check the system before riding.
3-17
3
EAU00027

PRE-OPERATION CHECKS
NOTE:
Pre-operation checks should be made each time the motorcycle is used. Such an inspection can be accomplished in a very short time;
and the added safety it assures is more than worth the time involved.
EWA00033WARNING0
If any item in the Pre-operation check list is not working properly, have it inspected and repaired before operating the motor-
cycle.
EAU01114
4-3
4

OPERATION AND IMPORTANT RIDING POINTS
EAU00373WARNING0
•Become thoroughly familiar with
all operating controls and their
functions before riding. Consult a
Yamaha dealer regarding any con-
trol or function that you do not
thoroughly understand.
•Never start the engine or operate it
in a closed area for any length of
time. Exhaust fumes are poiso-
nous, and inhaling them can cause
loss of consciousness and death
within a short time. Always make
sure that there is adequate ventila-
tion.
•Before starting out, make sure that
the sidestand is up. If the side-
stand is not raised completely, it
could contact the ground and dis-
tract the operator, resulting in a
possible loss of control.
EAU03818
Starting the engine
In order for the ignition circuit cut-off sys-
tem to enable starting, one of the following
conditions must be met:
•The transmission is in the neutral po-
sition.
•The transmission is in gear with the
clutch lever pulled and the sidestand
up.
EW000054WARNING0
•Before starting the engine, check
the function of the ignition circuit
cut-off system according to the
procedure described on page 3-18.
•Never ride with the sidestand
down.
1. Turn the key to “I” (ON) and make
sure that the engine stop switch is set
to “
I”.
EC000035
If the fuel level warning light comes on,
check the fuel level, and, if necessary,
refuel as soon as possible.
2. Shift the transmission into the neutral
position.
When the transmission is in the neu-
tral position, the neutral indicator light
should be on, otherwise have a
Yamaha dealer check the electrical
circuit.
3. Turn the starter (choke) on and com-
pletely close the throttle. (See page
3-12 for starter (choke) operation).
CAUTION:
5-1
5
EAU00372

OPERATION AND IMPORTANT RIDING POINTS
1
b
a
4. Start the engine by pushing the start
switch.
NOTE:
If the engine fails to start, release the start
switch, wait a few seconds, and then try
again. Each starting attempt should be as
short as possible to preserve the battery.
Do not crank the engine more than 10 sec-
onds on any one attempt.
1. Starter (choke) lever
a. Starter (choke) turned on
b. Starter (choke) turned off
EC000038
The oil level warning light and fuel lev-
el warning light should come on when
the start switch is pushed, and they
should go off when the start switch is
released.
If the oil level warning light flickers or
remains on after starting, immediately
stop the engine, and then check the
engine oil level and the vehicle for oil
leakage. If necessary, add engine oil,
and then check the warning light again.
If the warning light does not come on
when pushing the start switch, or if it
does not go off after starting with suffi-
cient engine oil, have a Yamaha dealer
check the electrical circuit.
If the fuel level warning light remains
on after starting, stop the engine, and
then check the fuel level. If necessary,
refuel as soon as possible, and then
check the warning light again. If the
warning light does not come on when
pushing the start switch, or if it does
not go off after starting with sufficient
fuel, have a Yamaha dealer check the
electrical circuit.
CAUTION:5. After starting the engine, move the
starter (choke) knob/lever back
halfway.
ECA00045
For maximum engine life, never accel-
erate hard when the engine is cold!
6. When the engine is warm, turn the
starter (choke) off.
NOTE:
The engine is warm when it responds nor-
mally to the throttle with the starter (choke)
turned off.
CAUTION:
EAU00372
5-2
5

OPERATION AND IMPORTANT RIDING POINTS
EAU00460
Parking
When parking, stop the engine, and then
remove the key from the main switch.
EW000058WARNING0
•Since the engine and exhaust sys-
tem can become very hot, park in a
place where pedestrians or chil-
dren are not likely to touch them.
•Do not park on a slope or on soft
ground, otherwise the motorcycle
may overturn.
5-5
5
EAU00372

EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
1EAU00464
Safety is an obligation of the owner. Peri-
odic inspection, adjustment and lubrication
will keep your vehicle in the safest and
most efficient condition possible. The most
important points of inspection, adjustment,
and lubrication are explained on the fol-
lowing pages.
The intervals given in the periodic mainte-
nance and lubrication chart should be sim-
ply considered as a general guide under
normal riding conditions. However, DE-
PENDING ON THE WEATHER, TER-
RAIN, GEOGRAPHICAL LOCATION,
AND INDIVIDUAL USE, THE MAINTE-
NANCE INTERVALS MAY NEED TO BE
SHORTENED.
EW000060WARNING0
If you are not familiar with motorcycle
maintenance work, have a Yamaha
dealer do it for you.
1. Owner’s tool kit
EAU01129
Owner’s tool kit
The owner’s tool kit is located inside the
storage compartment (see page 3-13 for
storage compartment opening proce-
dures).
The service information included in this
manual and the tools provided in the own-
er’s tool kit are intended to assist you in
the performance of preventive mainte-
nance and minor repairs. However, addi-
tional tools such as a torque wrench may
be necessary to perform certain mainte-
nance work correctly.
NOTE:
If you do not have the tools or experience
required for a particular job, have a Yama-
ha dealer perform it for you.
EW000063WARNING0
Modifications not approved by Yamaha
may cause loss of performance and
render the vehicle unsafe for use. Con-
sult a Yamaha dealer before attempting
any changes.
6-1
6

EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
EC000072
•In order to prevent clutch slippage
(since the engine oil also lubri-
cates the clutch), do not mix any
chemical additives with the oil or
use oils of a higher grade than
“CD”. In addition, do not use oils
labeled "ENERGY CONSERVING II"
or higher.
•Make sure that no foreign material
enters the crankcase.
CAUTION:6. Start the engine, and then let it idle for
several minutes while checking it for
oil leakage. If oil is leaking, immedi-
ately turn the engine off and check for
the cause.
NOTE:
After the engine is started, the engine oil
level warning light should go off if the oil
level is sufficient.
EC000067
If the oil level warning light flickers or
remains on, immediately turn the
engine off and have a Yamaha dealer
check the vehicle.
7. Turn the engine off, and then check
the oil level and correct it if neces-
sary.
NOTE:
Have a Yamaha dealer replace the oil filter
element when necessary.
CAUTION:
1. Engine oil drain bolt
6-8
6
1
4. Install the engine oil drain bolt, and
then tighten it to the specified torque.
5. Add the specified amount of the rec-
ommended engine oil, and then in-
stall and tighten the oil filler cap. Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kgf)
Recommended engine oil:
See page 8-1.
Oil quantity:
Without oil filter element
replacement:
3.0 L
With oil filter element
replacement:
3.1 L
Total amount (dry engine):
3.6 L