Yamaha TDM850 Service manual

Yamaha TDM850 Service manual
FOREWORD
This Supplementary Service Manual has been prepared to introduce new service and data for the TDM850
’99. For complete service information procedures it is necessary to use this Supplementary Service Manual
together with the following manual.
TDM850 ’96 SERVICE MANUAL: 4TX-AE1
TDM850 ’97 SUPPLEMENTARY SERVICE MANUAL: 4TX-AE2
TDM850 ’99
SUPPLEMENTARY
SERVICE MANUAL
1998 by Yamaha Motor Co., Ltd.
First Edition, November 1998
All rights reserved.
Any reproduction or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd. is expressly
prohibited.
EB001000
NOTICE
This manual was produced by the Yamaha Motor Company primarily for use by Yamaha dealers and their
qualified mechanics. It is not possible to include all the knowledge of a mechanic in one manual, so it is
assumed that anyone who uses this book to perform maintenance and repairs on Yamaha motorcycles has
a basic understanding of the mechanical ideas and the procedures of motorcycles repair. Repairs attempted by anyone without this knowledge are likely to render the motorcycles unsafe and unfit for use.
Yamaha Motor Company, Ltd. is continually striving to improve all its models. Modifications and significant
changes in specifications or procedures will be forwarded to all authorized Yamaha dealers and will appear
in future editions of this manual where applicable.
NOTE:
Designs and specifications are subject to change without notice.
IMPORTANT INFORMATION
Particularly important information is distinguished in this manual by the following notations.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY
IS INVOLVED!
Failure to follow WARNING instructions could result in severe injury or death to the
motorcycle operator, a bystander or a person inspecting or repairing the motorcycle.
CAUTION:
NOTE:
A CAUTION indicates special precautions that must be taken to avoid damage to
the motorcycle.
A NOTE provides key information to make procedures easier or clearer.
EB002000
HOW TO USE THIS MANUAL
MANUAL ORGANIZATION
This manual consists of chapters for the main categories of subjects. (See “Illustrated symbols”)
1st title 1 : This is the title of the chapter with its symbol in the upper right corner of each page.
2nd title 2 : This title indicates the section of the chapter and only appears on the first page of each section.
It is located in the upper left corner of the page.
3rd title 3 : This title indicates a sub-section that is followed by step-by-step procedures accompanied by
corresponding illustrations.
EXPLODED DIAGRAMS
To help identify parts and clarify procedure steps, there are exploded diagrams at the start of each removal
and disassembly section.
1. An easy-to-see exploded diagram 4 is provided for removal and disassembly jobs.
2. Numbers 5 are given in the order of the jobs in the exploded diagram. A number that is enclosed by a
circle indicates a disassembly step.
3. An explanation of jobs and notes is presented in an easy-to-read way by the use of symbol marks 6 . The
meanings of the symbol marks are given on the next page.
4. A job instruction chart 7 accompanies the exploded diagram, providing the order of jobs, names of
parts, notes in jobs, etc.
5. For jobs requiring more information, the step-by-step format supplements 8 are given in addition to the
exploded diagram and the job instruction chart.
2
1
4
3
6
8
5
7
EB003000
1
GEN
INFO
3
2
ILLUSTRATED SYMBOLS
SPEC
Illustrated symbols 1 to 9 are printed on top
right of each page and indicate the subject of each
chapter.
4
1 General information
2 Specifications
INSP
ADJ
ENG
3 Periodic inspection and adjustment
4 Engine
5
5 Cooling system
6
6 Carburetion
COOL
CARB
7 Chassis
8 Electrical
7
9 Troubleshooting
8
CHAS
ELEC
Illustrated symbols 10 to 17 are used to identify the
specifications appearing in the text.
10
9
TRBL
SHTG
10 Can be serviced with engine mounted
11 Filling fluid
12 Lubricant
11
12
13 Special tool
14 Torque
15 Wear limit, clearance
13
15
16 Engine speed
14
16
17 Ω, V, A
17
Illustrated symbols 18 to 23 in the exploded diagrams indicate the types of lubricants and lubrication points.
18 Apply engine oil
19 Apply gear oil
18
19
20
20 Apply molybdenum disulfide oil
21 Apply wheel bearing grease
22 Apply lightweight lithium-soap base grease
23 Apply molybdenum disulfide grease
21
22
23
Illustrated symbols 24 to 25 in the exploded diagrams indicate where to apply a locking agent 24
and when to install new parts 25 .
24
25
24 Apply locking agent (LOCTITE)
25 replace
CONTENTS
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MOTORCYCLE IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VEHICLE IDENTIFICATION NUMBER . . . . . . . . . . . . . . . . . . . . . . . .
MODEL LABEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
1
1
1
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHASSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CABLE ROUTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
2
3
3
3
4
5
PERIODIC INSPECTION AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PERIODIC MAINTENANCE/LUBRICATION INTERVALS . . . . . . . . . . .
SEAT, TAIL COVER AND FUEL TANK . . . . . . . . . . . . . . . . . . . . . . . . . . .
SEAT, TAIL COVER AND FUEL TANK . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CARBURETOR SYNCHRONIZATION . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE OIL LEVEL INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE OIL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL LINE INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
13
13
15
15
16
16
18
19
21
22
22
23
INSTRUMENT FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
COMBINATION METER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SIGNAL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIGNAL SYSTEM CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25
25
27
28
FUEL PUMP SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL PUMP CIRCUIT OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE FUEL PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
32
33
34
36
TDM850 ’99WIRING DIAGRAM
MOTORCYCLE IDENTIFICATION
GEN
INFO
EB100000
GENERAL INFORMATION
MOTORCYCLE IDENTIFICATION
VEHICLE IDENTIFICATION NUMBER
The vehicle identification number 1 is stamped
into the right side of the steering head.
MODEL LABEL
The model label 1 is affixed to the frame. This information will be needed to order spare parts.
–1–
GENERAL SPECIFICATIONS
SPECIFICATIONS
GENERAL SPECIFICATIONS
Item
Standard
Model:
TDM850
Model code:
4TX4
Basic weight (With oil and full fuel tank):
232 kg
Carburetor:
Type/quantity
Manufacturer
BDSR38/2
MIKUNI
Transmission
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Transmission type
Operation
Gear ratio
Bulb wattage quantity
Meter light
Indicator lights
Neutral
Turn
High beam
Fuel
Water tempere
1st
2nd
3rd
4th
5th
Spur gear
67/39 (1.718)
Chain drive
43/16 (2.688)
Constant mesh 5-speed
Left foot operation
37/14 (2.643)
37/19 (1.947)
30/20 (1.500)
27/23 (1.174)
27/28 (0.964)
12V 2 W 3
14 V 1.4 W 1
14 V 1.4 W 2
14 V 1.4 W 1
12 V 2 W 1
14 V 1.4 W 1
–2–
SPEC
MAINTENANCE SPECIFICATIONS
SPEC
MAINTENANCE SPECIFICATIONS
ENGINE
Item
Standard
Limit
Clutch:
Clutch spring free length
Quantity
50 mm
6
48 mm
Carburetor:
I.D. mark
Main jet
Main air jet
Jet needle
Needle jet
Pilot air jet 1
Pilot air jet 2
Pilot outlet
Pilot jet
Bypass 1
Bypass 2
Bypass 3
Pilot screw
Valve seat size
Starter jet 1
Starter jet 2
Throttle valve size
Fuel level
Engine idle speed
Intake vacuum
4TX4 40
#147.5
#65
#1: 6DJP17 #2: 6CL1
P-O
#87.5
#120
1.0
#17.5
0.8
0.9
0.8
2.0
1.5
#32.5
0.9
#95
4.4 X 5.4 mm
1050 X 1250 r/min
36.0 X 38.7 kPa (270 X 290 mmHg)
Fuel pump:
Type
Model/manufacturer
Output pressure
Electrical type
4TX/MITSUBISHI
7 kPa (0.07 kgf/cm2, 0.07 bar)
CHASSIS
Item
Fuel sender and fuel tank
Fuel pump and bracket
Bracket and frame
Thread size
M5
M6
M6
–3–
Tightening
torque
Nm
mkgf
3.8
6.5
6.5
0.38
0.65
0.65
Remarks
MAINTENANCE SPECIFICATIONS
SPEC
ELECTRICAL
Item
Standard
Limit
Charging system:
Type
Model/manufacturer
Nominal output
Stator coil resistance
A.C. magneto
TLN252/DENSO
14 V 25 A at 5,000 r/min
0.23 X 0.35 Ω at 20_C/W-W
SSS
SSS
SSS
SSS
Starter relay:
Model/manufacturer
Amperage rating
Coil winding resistance
MS5F-421 /JIDECO
180 A
4.2 X 4.6 Ω at 20_C
SSS
SSS
SSS
4TX/NIPPON/SEIKI
4 X 10Ω
90 X 100Ω
SSS
SSS
SSS
Fuel pump relay:
Model/manufacturer
Coil winding resistance
G8R-30Y-B/OMRON
225 Ω ± 10%
SSS
SSS
Hazard relay:
Model/manufacturer
Coil winding resistance
4KM-00/MATSUSHITA
72 X 88 Ω at 20_C
SSS
SSS
Fuse
SSS
30 A
1
15 A
1
15 A
1
10 A
1
10 A
1
7.5 A
1
5A
1
15 A
1
10 A
1
5A
1
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
SSS
Fuel sender:
Model/manufacturer
resistance
full
empty
Circuit breakers:
Type
Amperage for individual circuits
Main fuse
Headlight fuse
Signal system fuse
Ignition fuse
Fuse (position light and hazard)
Radiator fan fuse
Back up
Reserve fuse
Reserve fuse
Reserve fuse
–4–
CABLE ROUTING
SPEC
CABLE ROUTING
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Throttle cable 1
Right handlebar switch lead
Brake hose
Clutch cable
Main switch lead
Left handlebar switch lead
Horn lead
Starter cable
Speed sensor lead
Coolant reservoir hose
Headlight lead
Meter light lead
Thermo unit lead
Thermo switch lead
Fan motor lead
16 Ignition coil (left) lead
17 Ignition coil (right) lead
18 Negative lead
A Fasten the right handlebar switch
lead with a plastic band.
B Fasten the handlebar switch lead
with a plastic band.
C 50 mm
D Fasten the horn lead with a plastic
band.
E 60 mm
F Set the clamp within 10 mm from
the upper end of protector.
–5–
G Align the brake hose white mark to
the mark of bracket.
H Fasten the brake hose with a plastic band and cut the end of band.
I Pass the speed sensor lead between throttle cable and clutch
cable and fasten to the frame head
pipe.
J Pass the wireharness and hoses
under the frame.
K Fasten the coolant reservoir hose
with a plastic band.
CABLE ROUTING
L Fasten the meter lead and headlight lead with a plastic band.
M Fasten the wireharness with a plastic band.
N Fasten the wireharness, right handlebar switch lead
meter lead and headlight lead with a plastic band.
O Connect the coupler and insert to the protector.
SPEC
P Fasten the wireharness with a plastic band.
Q Fasten the wireharness and ignition coil (left) lead
with a plastic band.
R Fasten the wireharness right handlebar switch lead,
main switch lead fan motor lead with a plastic band.
S Set the ignition coil at the mark upward.
T Protector is under the coupler.
–6–
CABLE ROUTING
1
2
3
4
5
6
7
8
9
10
Front flasher light (left) lead
Main switch lead
Starter cable 1
Left handlebar switch lead
Spark plug lead
Carburetor breather hose
Fuel hose
Coolant reservoir hose
Sidestand switch lead
Neutral switch lead
11
12
13
14
15
16
17
18
19
20
A.C. magneto lead
Air filter case breather hose
Carburetor heater hose
Starter cable 2
Thermo switch lead
Brake hose
Speed sensor lead
Wire harness
Flasher relay lead
Fuel pump lead
–7–
SPEC
A Fasten the left handlebar switch
lead and main switch lead with a
plastic band.
B Route the wireharness to the rearside of the frame pipe.
C Route the starter cable through radiator hose upward and spark plug
lead rear side and in front of air filter case breather hose. Route the
spark plug lead to the outside of
the carburetor starter bracket and
carburetor heater hose.
CABLE ROUTING
D Fasten the rear flasher light (left) lead.
E Fasten the sidestand switch lead neutral switch lead
and A.C. magneto lead.
F Route the sidestand switch lead and air filter case
breather hose to the inside of the engine cover.
G Fasten the sidestand switch lead to the air filter case
breather hose.
H Route the air filter case breather hose over the idle adjust bracket.
I Route the air filter case breather hose to the outside of
the carburetor heater hose and route the carburetor
heater hose to the inside of the air filter case breather
hose.
SPEC
J Clamp the speed sensor lead to the outer tube with a
holder.
K Clamp the speed sensor lead along the brake hose
(three position).
L Connect the coupler and insert the protector. Set the
protector between crosstube and fuel pump.
M Fasten the coolant reservoir hose, A.C. magneto
lead, neutral switch lead and sidestand switch lead.
–8–
CABLE ROUTING
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Battery negative lead
Battery positive lead
Starter motor lead
Fuel sender lead
Fuel tank drain hose
Fuel tank breather hose (for DEU)
Water hose
Spark plug lead
Clutch cable
Brake hose
Throttle cable
Right handlebar switch lead
Headlight lead
Meter light lead
Speed sensor lead
Carburetor heater hose
17
18
19
20
21
22
Vacuum hose (#1)
Vacuum hose (#2)
Coolant reservoir breather hose
Carburetor breather hose
Rear brake switch lead
CYCLELOCK lead
A Route the battery positive lead
and battery negative lead through
the clamp.
B Fasten the wireharness Coolant
breather hose and flasher relay
lead.
C Route the carburetor breather
hoses through the engine clamp.
–9–
SPEC
D Fasten the carburetor air vent hose.
E Route the carburetor breather
hoses, vacuum hose (#1) down
ward and vacuum hose (#2) upward through the guide.
F Route the vacuum hose (#1) inside,
vacuum hose (#2) outside through
the guide.
G Fasten the coolant reservoir hose.
H Fasten the wireharness right handlebar switch lead meter lead and
headlight lead with a clamp.
I Route the relay lead through the
outside of wireharness.
CABLE ROUTING
J Fasten the right handlebar switch lead and speed
sensor lead with a clamp.
K Fasten the throttle cable and speed sensor lead with a
clamp.
L Route the coolant reservoir hose through the outside
of clutch cable.
M Fasten the wireharness, right handlebar switch lead,
meter lead and headlight lead with a clamp.
N Route the clutch cable through the guide of stay.
O Route the coolant reservoir breather hose, fuel tank
drain hose, carburetor breather hose through the guide.
P Route the carburetor breather hoses through the clamp.
Q Route the fuel tank drain hose, fuel tank breather
hose through the hole of the frame bracket.
R Route the coolant reservoir breather hose, fuel tank
breather hoseand fuel tank drain hose through the guide.
S
T
U
V
W
–10–
SPEC
Route the brake switch lead through the guide.
Fasten the wireharness, rear flasher lead with a clamp.
Fasten the wireharness with a clamp.
Fasten the coolant reservoir breather hose with a clamp.
To the engine.
CABLE ROUTING
1
2
3
4
5
6
7
8
9
10
11
Head light lead
Wireharness
Meter light lead
Throttle cable
Throttle stop screw cable
Vacuum hose (#2)
Vacuum hose (#1)
Fuel tank breather hose
Fuel hose
Carburetor air vent hose
Carburetor breather hose
12
13
14
15
16
17
18
19
20
21
22
23
Fuel tank drain hose
Fuel hose
Fuel sender lead
Starter motor lead
Battery positive lead
Battery negative lead
Coolant reservoir breather hose
Coolant reservoir hose
Fuel hose
Carburetor breather hose
Cylinder head breather hose
Air filter case breather hose
–11–
SPEC
A Fasten the meter lead, headlight
lead wireharness with a clamp.
B Fasten the wireharness, coolant
reservoir hose with a clamp.
C Fasten the fuel hose with a clamp.
D Route the starter relay lead and
fuel sender lead through the guide
of bracket.
E Connect the coupler and insert the
protector.
F Fasten the taillight lead to the taillight bracket above left taillight with
a clamp and end of clamp is downward.
G 50 mm
CABLE ROUTING
H Fasten the carburetor breather hose and see the
hose mark.
I In order to carburetor breather hose, idle adjust cable
coolant breather hose from downward.
J Route the air filter drain hose to outside of throttle position sensor lead.
K Fasten the wireharness with a clamp.
L To left flasher.
M Fasten the headlight lead with a clamp.
N
O
P
Q
R
SPEC
To head light.
To auxiliary light.
To meter.
Fasten the meter lead, headlight lead with a clamp.
Fasten the meter lead, headlight lead and right flasher lead connecter with a clamp.
S To right flasher.
T Fasten the meter lead, headlight lead, relay assembly
lead and right flasher lead with a clamp.
–12–
INTRODUCTION/
PERIODIC MAINTENANCE/LUBRICATION INTERVALS
INSP
ADJ
PERIODIC INSPECTION AND ADJUSTMENT
INTRODUCTION
This chapter includes all information necessary to perform recommended inspection and adjustments.
These preventive maintenance procedures, if followed, will ensure more reliable vehicle operation and a
longer service life. The need for costly overhaul work will be greatly reduced. This information applies to
vehicles already in service as well as new vehicles that are being prepared for sale. All service technicians
should be familiar with this entire chapter.
PERIODIC MAINTENANCE/LUBRICATION INTERVALS
EVERY
NO.
ITEM
CHECKS AND MAINTENANCE JOBS
1
*
Fuel line
Check fuel hoses for cracks or damage.
Replace if necessary.
2
*
Fuel filter
Check condition.
Replace if necessary.
Spark plugs
Check condition.
Clean, regap or replace if necessary.
Valves
Check valve clearance.
Adjust if necessary.
5
Air filter
Clean or replace if necessary.
6
Clutch
Check operation.
Adjust or replace cable.
3
4
*
INITIAL
(1,000 km)
6,000 km
or
6 months
(whichever
comes first)
12,000 km
or
12 months
(whichever
comes first)
√
√
√
√
√
√
Every 42,000 km or 42 months
(whichever comes first)
√
√
√
√
√
7
*
Front brake
Check operation, fluid level and vehicle for fluid leakage.
Correct accordingly.
Replace brake pads if necessary.
√
√
√
8
*
Rear brake
Check operation, fluid level and vehicle for fluid leakage.
Correct accordingly.
Replace brake pads if necessary.
√
√
√
9
*
Wheels
Check balance, runout and for damage.
Rebalance or replace if necessary.
√
√
10 *
Tires
Check tread depth and for damage.
Replace if necessary.
Check air pressure.
Correct if necessary.
√
√
11 *
Wheel bearings
Check bearing for looseness or damage.
Replace if necessary.
√
√
12 *
Swingarm
Check swingram pivoting point for play.
Correct if necessary.
Lubricate with molybdenum disulfide grease every 24,000 km
or 24 months (whichever comes first).
√
√
13
Drive chain
Check chain slack.
Adjust if necessary. Make sure that the rear wheel is properly
aligned.
Clean and lubricate.
Every 500 km and after washing the
motorcycle or riding in the rain
14 *
Steering bearings
Check bearing play and steering for roughness.
Correct accordingly.
Lubricate with lithium soap base grease every 24,000 km or
24 months (whichever comes first).
√
√
15 *
Chassis fasteners
Make sure that all nuts, bolts and screws are properly tight ened.
Tighten if necessary.
√
√
16
Sidestand
Check operation.
Lubricate and repair if necessary.
√
√
17 *
Sidestand switch
Check operation.
Replace if necessary.
√
√
18 *
Front fork
Check operation and for oil leakage.
Correct accordingly.
√
√
19 *
Rear shock absorber
assembly
Check operation and shock absorber for oil leakage.
Replace shock absorber assembly if necessary.
√
√
20 *
Rear shock absorber
assembly pivoting
points
√
√
√
Check operation.
Lubricate with molybdenum disulfide grease every 24,000 km
or 24 months (whichever comes first).
–13–
PERIODIC MAINTENANCE/LUBRICATION INTERVALS
INSP
ADJ
EVERY
NO.
ITEM
CHECKS AND MAINTENANCE JOBS
INITIAL
(1,000 km)
6,000 km
6 months
(whichever
comes first)
12,000 km
12 months
(whichever
comes first)
21 *
Carburetors
Check engine idling speed, synchronization and starter
oper ation.
Adjust if necessary.
√
√
√
22
Engine oil
Check oil level and vehicle for oil leakage.
Correct if necessary.
Change. (Warm engine before draining.)
√
√
√
23
Engine oil filter
element
Replace.
√
24 *
Cooling system
Check coolant level and vehicle for coolant leakage.
Correct if necessary.
Change coolant every 24,000 km or 24 months (whichever
comes first).
√
√
√
* Since these items require special tools, data and technical skills, they should be serviced by a Yamaha
dealer.
NOTE:
The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
Hydraulic brake system
When disassembling the master cylinder or caliper cylinder, always replace the brake fluid. Check the
brake fluid level regularly and fill as required.
Replace the oil seals on the inner parts of the master cylinder and caliper cylinder every two years.
Replace the brake hoses every four years or if cracked or damaged.
–14–
SEAT, TAIL COVER AND FUEL TANK
INSP
ADJ
SEAT, TAIL COVER AND FUEL TANK
16 Nm (1.6mkg)
3.8 Nm (0.38mkg)
Order
Job name/Part name
1
2
3
4
5
Seat, tail cover and fuel tank removal
Side cowling
Seat
Taillight lead coupler
Tail cover
Side cover
Fuel hose
1
1
1
2
1
6
7
8
Fuel tank breather hose
Fuel tank
Fuel sender coupler
1
1
1
Q’ty
–15–
Remarks
Remove the parts in the order below.
Refer to “COWLINGS”.
Disconnect
NOTE:
Set the fuel cock (fuel tank side) to “OFF”
before disconnecting the fuel hoses.
Disconnect
For installation, reverse the removal
procedure.
CARBURETOR SYNCHRONIZATION
INSP
ADJ
ENGINE
CARBURETOR SYNCHRONIZATION
NOTE:
Valve clearance and idling speed should be adjusted properly before synchronizing the carburetors.
1. Place the motorcycle on a level surface.
NOTE:
Place the motorcycle on its centerstand if a centerstand is equipped. If not, place a suitable stand
under the motorcycle.
2. Remove:
Side cowling
Seat
Side cover
Fuel tank
Refer to “COWLINGS, SEAT, TAIL COVER
AND FUEL TANK”.
3. Remove:
Vacuum hose 1 (#1 carburetor) 1
Vacuum hose 2 (#2 carburetor) 2
4. Attach:
Adapters
Vacuum gauge 1
Engine tachometer 2
(to #1 spark plug lead)
Vacuum gauge:
90890-03094
Engine tachometer:
90890-03113
5. Start the engine and let it warm up for several
minutes.
6. Check:
Engine idling speed
Out of specification Adjust.
Refer to “ENGINE IDLING SPEED ADJUSTMENT”.
Engine idling speed:
1,050 X 1,250 r/min
–16–
CARBURETOR SYNCHRONIZATION
INSP
ADJ
7. Adjust:
Carburetor synchronization
Adjustment steps:
Synchronize carburetor #1 to carburetor #2 by
turning synchronizing screw 1 until both
gauges read the same.
Race the engine for less than a second, two or
three times and check the synchronization
again.
Intake vacuum at idle speed:
36.0 – 38.7 kPa (270 – 290 mm Hg)
NOTE:
The difference between both carburetors should
be 0.67 kPa (5 mm Hg) or less.
8. Check:
Engine idling speed
Out of specification Adjust.
9. Stop the engine and detach the measuring
equipment.
10. Adjust:
Throttle cable free play
Refer to “THROTTLE CABLE FREE PLAY ADJUSTMENT”.
Free play:
3 – 5 mm
At throttle grip flange
11. Install:
Fuel tank
Side cover
Seat
Side cowling
Refer to “COWLINGS, SEAT, TAIL COVER
AND FUEL TANK”.
–17–
ENGINE OIL LEVEL INSPECTION
INSP
ADJ
ENGINE OIL LEVEL INSPECTION
NOTE:
Position the motorcycle straight up when inspecting the oil level.
1. Place the motorcycle on a level surface.
NOTE:
After idling the engine a few minutes.
The summer season is about 5 minutes and the
winter season is about 15 minutes.
Turn off the engine and wait a few minutes until
the oil settle.
The motor cycle is vertical.
Then check that the oil level is between the maximum and minimum marks.
Place the motorcycle on its centerstand if a centerstand is equipped. If not, place a suitable
stand under the motorcycle.
2. Inspect:
Oil level
Oil level should be between the maximum a
and minimum b marks.
Oil level is below the minimum mark Add oil
up to the proper level.
Recommended oil:
Refer to the following chart for
selection of oils which are suited
to the atmospheric temperatures.
Recommended engine oil classification:
API STANDARD:
API “SE” or higher grade
CAUTION:
Do not put in any chemical additives or use
oils with a grade of CD a higher.
Be sure not to use oils labeled “ENERGY
CONSERVING II” b or higher. Engine oil also
lubricates the clutch and additives could
cause clutch slippage.
Be sure no foreign material enters the crankcase.
3. Start the engine and let it warm up for several
minutes.
4. Turn off the engine and check the oil level
again.
–18–
ENGINE OIL REPLACEMENT
INSP
ADJ
ENGINE OIL REPLACEMENT
1. Start the engine and let it warm up for several
minutes.
2. Stop the engine and place an oil pan under the
drain bolt.
3. Remove:
Oil filler plug 1
4. Remove:
Drain bolt (with gasket) 1
Oil filter drain bolt (with gasket) 2
Drain the crankcase and oil tank of its oil.
5. If the oil filter is to be replaced during this oil
change, remove the following parts and reinstall them.
Replacement steps:
Remove the oil filter cover 1 and oil filter element 2 .
Check the O-rings 3 , if cracked or damaged,
replace them with a new one.
Install the oil filter element and oil filter cover.
Oil filter cover (M10):
10 Nm (1.0 mkg)
6. Install:
Gaskets New
Drain bolt
Oil filter drain bolt
–19–
35 Nm (3.5 mkg)
30 Nm (3.0 mkg)
ENGINE OIL REPLACEMENT
INSP
ADJ
7. Fill:
Crankcase
CAUTION:
The engine should be filled with oil in two
steps. First fill the engine with 3.2 liters of oil.
Then start the engine and race it five or six
times. Continue idling the engine a few minutes. Stop the engine and fill it with oil to the
specified level.
Oil quantity:
Total amount:
4.2 L
Periodic oil change:
3.5 L
With oil filter replacement:
3.6 L
8. Install:
Oil filler plug
9. Inspect:
Engine (for oil leaks)
Oil level
Refer to “ENGINE OIL LEVEL INSPECTION”.
–20–
FUEL LINE INSPECTION
INSP
ADJ
FUEL LINE INSPECTION
1. Remove:
Side cowling
Seat
Side cover
Fuel tank
Refer to “COWLINGS, SEAT, TAIL COVER
AND FUEL TANK”.
2. Inspect:
Fuel hoses 1
Cracks /Damage Replace.
Loose connection Connect properly.
NOTE:
Drain and flush the fuel tank if abrasive damage to
any components is evident.
3. Install:
All removed parts
NOTE:
Install all removed parts in reversed order of their
removal.
–21–
CLUTCH
ENG
CLUTCH
CLUTCH
70 Nm (7.0mkg)
8 Nm (0.8mkg)
Order
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Job name/Part name
Clutch removal
Clutch spring
Pressure plate
Plain washer/Bearing
Pull rod
Friction plate
Friction plate
Clutch plate
Clutch boss nut
Lock washer
Clutch boss
Thrust plate
Spacer/Bearing
Clutch housing
Thrust plate 2
Thrust plate 1
Q’ty
Remarks
Remove the parts in the order below.
6
1
1/1
1
7
2
8
1
1
1
1
1/1
1
1
1
Refer to “REMOVAL”, and
“INSTALLATION”.
For installation, reverse the removal
procedure.
–22–
CLUTCH
ENG
INSTALLATION
1. Install:
friction plates
clutch plates
CAUTION:
The friction plates are made in two types. The
first and last friction plates are different in material from the other ones and black on the surface. Assembly should be done in the correct
order.
NOTE:
Mount friction and clutch plate alternately.
Lubricate the friction plates with engine oil.
–23–
INSTRUMENT FUNCTIONS
This combination meter is equipped with the following.
An odometer
Two trip odometers
A clock
INSTRUMENT FUNCTIONS
COMBINATION METER
1
2
3
4
ELEC
Odometer and trip meters
Use the trip meters to estimate how far you can
ride on a tank of fuel.
Speedometer
Clock, odometer
Select button
Reset button
Push the Select button to change between the
odometer mode “ODO” and the trip odometer
modes “TRIP 1” and “TRIP 2” in the following order:
“ODO” “TRIP 1” “TRIP 2” “ODO”
To 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
To change the display to the clock mode, push
both the select and reset buttons.
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 flashing, 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.
–24–
SIGNAL SYSTEM
EB806000
SIGNAL SYSTEM
CIRCUIT DIAGRAM
–25–
ELEC
SIGNAL SYSTEM
3 Main switch
4 Fuse (position light and hazard)
6 Battery
8 Main fuse
22 Fuel sender
25 Fuel meter
27 Fuel level indicator light
32 Turn indicator light (left)
33 Turn indicator light (right)
34 Speed meter
35 Speed sensor
36 Front flasher light
37 Rear flasher light
44 Hazard switch
45 Turn switch
48 Flasher relay
49 Hazard relay
–26–
ELEC
SIGNAL SYSTEM
EB806010
ELEC
EB802401
TROUBLESHOOTING
S Any of the following fail to light: flasher
light, trun and fuel level indicator light.
S The fuel meter fails to operate.
2. Battery
S Check the condition of the battery.
Refer to “BATTERY INSPECTION”.
Open-circuit voltage
12.8 V or more at 20_C
Check:
1. main and signal system fuses
2. battery
3. main switch
4. wiring
(of the entire signal system)
S Is the battery OK?
YES
S Clean the battery
terminals.
S Recharge or replace
the battery.
NOTE:
S Before troubleshooting, remove the following
part(-s):
1) seats
2) fuel tank
3) air filter case
4) side cowlings
5) side covers
S Troubleshoot with the following special tool(-s).
EB802411
3. Main switch
S Check the main switch for continuity.
Refer to “SWITCH INSPECTION”.
S Is the main switch OK?
Pocket tester
90890-03112
YES
NO
Repalce
switch.
EB802400
1. Main and signal system fuses
S Check the main and signaling system fuses
for continuity.
Refer to “FUSE INSPECTION”.
S Are the main and signaling system fuses OK?
YES
NO
the
main
EB806400
4. Wiring
S Check the entire signal system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
S Is the signal system’s wiring properly connected and withour defects?
NO
YES
Replace the fuse(-s).
Check the condition
of each of the signaling system’s circuits.
Refer to “SIGNAL
SISTEM CHECK.”
–27–
NO
Properly connect or
repair the signal system’s wiring
SIGNAL SYSTEM
SIGNAL SYSTEM CHECK
1. Flasher light and/or turn indicator light does
not blink.
4. Voltage
Connect the pocket tester (DC 20 V) to the
flasher relay coupler.
1. Flasher/turn indicator light bulb and socket
Tester (+) lead Brown/Red terminal 1
Tester (–) lead Frame ground
Check the flasher/turn indicator light bulb and
socket for continuity.
Are the flasher/turn indicator light bulb and
socket OK?
YES
ELEC
NO
Replace the flasher/turn indicator light
balb, socket or both.
2. Turn switch
Turn the main switch to “ON” or “P”.
Check for voltage (12 V) on the “Brown/Red”
lead at the flasher relay terminal.
Is the voltage within specification.
Refer to “SWITCH INSPECTION”.
Is the turn switch OK?
YES
NO
YES
Replace the left handlebar switch.
NO
Wiring circuit from
main switch to flasher
relay connector is
faulty, repair.
3. Voltage
Connect the pocket tester (DC 20 V) to the
hazard relay coupler.
5. Voltage
Tester (+) lead Brown/Red terminal 1
Tester (–) lead Frame ground
Connect the pocket tester (DC 20 V) to the
flasher relay lead.
Tester (+) lead Brown/White terminal 1
Tester (–) lead Frame ground
Turn the main switch to “ON” or “P”.
Check for voltage (12 V) on the “Brouwn/Red”
lead at the flasher relay terminal.
Is the voltage within specification.
YES
NO
Wiring circuit from
main switch to hazard
relay connector is
faulty, repair.
–28–
SIGNAL SYSTEM
2. The fuel level indicator light fails to come on or
the fuel meter fails to operator.
S Turn the main switch to “ON” or “P”.
S Check for voltage (12 V) on the “Brouwn/White”
lead at the flasher relay terminal.
S Is the voltage within specification.
YES
1. Fuel level indicator light bulb and socket
S Check the fuel level indicator bulb and socket
continuity.
S Are the fuel level indicator light bulb and socket OK?
NO
Replace the flasher
relay.
YES
5. Voltage
NO
Replace the
and/or socket.
S Connect the pocket tester (DC 20 V) to the
bulb socket connector.
bulb
2. Fuel sender
A Flasher lights
B Turn indicator light
S Drain the fuel and remove the fuel sender
from the fuel tank.
S Disconnect the fuel sender coupler from the
wire harness.
S Connect the posket tester (Ω 1) to the fuel
sender.
At flasher light (left):
Tester (+) lead Chocolate lead 1
Tester (–) lead Frame ground
At flasher light (right):
Tester (+) lead Dark green lead 2
Tester (–) lead Frame ground
A
ELEC
Tester (+) lead Green/Red terminal 2
Tester (–) lead Black terminal 1
B
S Check the fuel sender for continuity.
S Connect the pocket tester (Ω 1) to the fuel
sender
Tester (+) lead Green/Red terminal 3
Tester (–) lead Black terminal 1
S Measure the fuel sender resistance.
Fuel sender resistance
4 : 4 X 10 Ω at 20_C
5 : 90 X 100 Ω at 20_C
S Turn the main switch to “ON” or “P”.
S Turn the turn switch to “L” or “R”.
S Check for voltage (12 V) on the “Chocolate”
lead or “Dark green” lead at the bulb socket
connector.
S Is the voltage with in specification.
YES
This circuit is good.
NO
Wiring circuit from
turn switch to bulb
socket connector is
faulty, repair.
–29–
SIGNAL SYSTEM
Set the main switch to “ON”.
Measure the voltage (12 V).
Is the voltage within specification?
Is the fuel sender OK?
YES
NO
Replace
sender.
the
ELEC
YES
fuel
This circuit is OK.
3. Fuel meter
Drain the fuel and remove the fuel sender from
the fuel tank.
Connect the fuel sender to wireharness.
Move the float to “UP” 1 or “DOWN” 2 .
NO
The wiring circuit from
the main switch to the
meter assembly coupler is faulty and must
be repaired.
2. The speed meter fails to operate.
1. Speed sensor
Connect the pocket tester (DC 20 V) and battery (12 V)to the speed sensor coupler as
shown.
Speed sensor coupler (speed sensor side)
Turn the main switch to “ON”.
Check the fuel gauge needle moves “F” or “E”.
Float position
Float “UP” 1
Float “DOWN” 2
YES
Needle moves
“F”
“E”
NO
Replace the fuel meter
4. Voltage
Connect the pocket tester (DC 20 V) to the meter
assembly coupler (wire harness side) as shown.
Tester positive probe Brown 1
Tester negative probe Green/Red 2
–30–
SIGNAL SYSTEM
Battery positive terminal red 2
Battery negative terminal black 3
Tester positive probe white 1
Tester negative probe black 3
Set the main switch to “ON”.
Elevate the front wheel and slowly rotate it.
Does the voltage (5V) read cycle 4 times with
each, full rotation of the front wheel?
YES
NO
Replace the speed
sensor.
2. Wiring
Check the entire wiring signal system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
Is the signal system’s wiring properly connected and with out defects?
YES
Replace the speed
meter.
NO
Properly connect or
repair the signal system’s wiring.
–31–
ELEC
3 Main switch
6 Battery
8 Main fuse
11 Fuel pump
13 Fuel relay
18 Ignitor unit
61 Engine stop switch
62 Ignition fuse
FUEL PUMP SYSTEM
–32–
ELEC
EB808000
FUEL PUMP SYSTEM
CIRCUIT DIAGRAM
FUEL PUMP SYSTEM
EB808010
FUEL PUMP CIRCUIT OPERATION
The ignitor unit includes the control unit for the fuel pump.
1
2
3
4
5
6
7
8
Battery
Main fuse
Main switch
Ignition fuse
Engine stop switch
Ignitor unit
Fuel pump relay
Fuel pump
–33–
ELEC
FUEL PUMP SYSTEM
EB808020
ELEC
EB802401
TROUBLESHOOTING
2. Battery
Check the condition of the battery.
Refer to “BATTERY INSPECTION”.
The fuel pump fails to operate.
Check:
1. main and ignition fuses
2. battery
3. main switch
4. engine stop switch
5. fuel pump relay
6. fuel pump
7. wiring
(the entire fuel pump system)
Open-circuit voltage
12.8 V or more at 20C
Is the battery OK?
YES
NO
Clean the battery
terminals.
Recharge or replace
the battery.
NOTE:
Before troubleshooting, remove the following
part(-s):
1) seat
2) fuel tank
3) side cowlings
4) side covers
Troubleshoot with the following special tool(-s).
EB802411
3. Main switch
Check the main switch for continuity.
Refer to “SWITCH INSPECTION”.
Is the main switch OK?
YES
Pocket tester
90890-03112
NO
Repalce
switch.
EB802400
the
main
1. Main and ignition fuses
Check the main and ignition fuses for continuity.
Refer to “SWITCH INSPECTION”.
Are the main and ignition fuses OK?
YES
EB802412
4. Engine stop switch
Check the engine stop switch for continuity.
Refer to “SWITCH INSPECTION”.
Is the engine stop switch OK?
NO
YES
NO
Replace the fuse (-s)
Replace the right handlebar switch
–34–
FUEL PUMP SYSTEM
ELEC
Measure the fuel pump resistance.
5. Fuel pump relay
Disconnect the relay unit from the coupler.
Connect the pocket tester (Ω 1) and battery
(12 V) to the relay unit ferminals as shown.
Fuel pump resistance
4 10 Ω at 20C
Is the fuel pump OK?
Battery positive terminal red/black 1
Battery negative terminal blue/red 2
YES
Tester positive probe red/black 1
Tester negative probe blue/black 3
NO
Relpace the fuel pump.
EB808401
7. Wiring
Check the entire fuel pump system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
Is the fuel pump system’s wiring properly connected and without defects?
YES
Does the fuel pump relay have continuity between red/black and blue/black?
YES
Replace the ignitor
unit.
NO
Replace the relay unit
EB808400
6. Fuel pump resistance
Disconnect the fuel pump coupler from the
wire harness.
Connect the pocket tester (Ω 1) to the fuel
pump coupler (fuel pump side) as shown.
Tester positive probe black/blue 1
Tester negative probe black 2
–35–
NO
Prperly connect or repair the fuel pump
system’s wiring.
FUEL PUMP SYSTEM
ELEC
EB808410
CHECKING THE FUEL PUMP
WARNING
Gasoline is extremely flammable and under
certain circumstances there can be a danger
of an explosion or fire. Be extremely careful
and note the following points:
Stop the engine before refuelling.
Do not smoke and keep away from open
flames, sparks or any other source of fire.
If you do accidentally spill gasoline, wipe it
up immediately with dry rags.
If gasoline touches the engine when it is hot,
a fire may occur. Therefore, make sure that
the engine is completely cool before performing the following test.
1. Check:
fuel pump operation
a. Fill the fuel tank.
b. Put the end of the fuel hose into an open container.
c. Connect the battery (12 V) to the fuel pump
coupler as shown.
Battery positive lead blue/black 1
Battery negative lead black 2
d. If fuel flows out of the fuel hose, the fuel pump is
OK. If fuel does not flow, replace the fuel pump.
–36–
TDM850 ’99 WIRING DIAGRAM
COLOR CODE
B ......
Br . . . . .
Ch . . . .
Dg . . . .
G .....
Gy . . . .
Black
Brown
Chocolate
Dark green
Green
Gray
L ......
Lg . . . . .
Or . . . . .
R......
Sb . . . . .
W .....
Blue
Light green
Orange
Red
Sky blue
White
Y ......
B/L . . . .
Br / L . . .
Br / R . . .
Br / W . .
B/W . . .
Yellow
Black / Blue
Brown / Blue
Brown / Red
Brown / White
Black / White
B/Y . . . .
G/B . . .
G/R . . .
G/W . . .
G/Y . . .
L/R . . . .
Black / Yellow
Green / Black
Green / Red
Green / White
Green / Yellow
Blue / Red
L/W . . .
L/Y . . . .
R/B. . . .
P/G . . .
R/W . . .
R/Y. . . .
Blue / White
Blue / Yellow
Red / Black
Red / Green
Red / White
Red / Yellow
Y / B . . . . Yellow / Black
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
A.C. maguneto / pickup coil
Rectifier / regulator
Main switch
Fuse (position light and hazard)
Backup fuse (odometer)
Battery
Starter relay
Main fuse
Starter motor
Thermo unit
Fuel pump
Starting circuit cutoff relay
Fuel pump relay
Relay unit
T.P.S (throttle position sensor)
Gear position switch
Sidestand switch
Ignitor unit
Ignition coil
Spark plug
CYCLELOCK (option)
Fuel sender
Meter assembly
Tachometer
Fuel meter
Meter light
Fuel level indicator light
Neutral indicator light
Water temperature meter
Combination meter
High beam indicator light
Turn indicator light (left)
Turn indicator light (right)
Speed meter
Speed sensor
Front flasher light
Rear flasher light
Head light
Auxiliary light
Horn
Horn switch
Dimmer switch
“PASS” switch
Hazard switch
Turn switch
Clutch switch
Left handlebar switch
Flasher relay
Hazard relay
Fan motor
Thermo switch
Radiator fan fuse
Tail / brake light
Headlight fuse
Rear brake switch
Signal system fuse
Right handlebar switch
Front brake switch
Light switch
Engine stop switch
Start switch
Ignition fuse
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