Page 48 of 103

6
PERIODIC MAINTENANCE AND MINOR REPAIR
Tool kit................................................................... 6-1
Periodic maintenance and lubrication ................... 6-2
Cowling removal and installation .......................... 6-5
Cowling A.............................................................. 6-5
Cowling B.............................................................. 6-5
Cowling C ............................................................. 6-6
Spark plugs........................................................... 6-7
Engine oil .............................................................. 6-9
Coolant ............................................................... 6-11
Air filter ............................................................... 6-12
Carburetor adjustment ........................................ 6-14
Idle speed adjustment ........................................ 6-15
Throttle cable free play inspection ...................... 6-15
Valve clearance adjustment ................................ 6-16
Tires .................................................................... 6-16
Wheels................................................................ 6-19
Brake light switch adjustment ............................. 6-19
Checking the front and rear brake pads.............. 6-20
Inspecting the brake fluid level............................ 6-21
Brake fluid replacement ...................................... 6-22
Drive chain slack check ...................................... 6-23Drive chain slack adjustment ............................. 6-23
Drive chain lubrication........................................ 6-24
Cable inspection and lubrication ........................ 6-24
Brake and shift pedal lubrication ........................ 6-24
Brake and clutch lever lubrication ...................... 6-25
Sidestand lubrication.......................................... 6-25
Rear suspension lubrication............................... 6-25
Front fork inspection ........................................... 6-26
Steering inspection ............................................ 6-26
Wheel bearings .................................................. 6-27
Battery................................................................ 6-27
Fuse replacement .............................................. 6-28
Headlight bulb replacement ............................... 6-29
Tail/brake light bulb replacement ........................ 6-30
Turn signal light bulb replacement...................... 6-30
Front wheel removal ........................................... 6-31
Front wheel installation ...................................... 6-31
Rear wheel removal ........................................... 6-32
Rear wheel installation ....................................... 6-33
Troubleshooting .................................................. 6-34
Troubleshooting chart......................................... 6-35
E_4sv_PeriodicTOC.fm Page 1 Tuesday, August 31, 1999 3:45 PM
Page 51 of 103

PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
11
*Wheel bearings• Check bearing for looseness or damage.
• Replace if necessary. ÖÖ
12*Swingarm• Check swingarm pivoting point for play.
• Correct if necessary.
• Lubricate with molybdenum disulfide grease every 24,000 km or
24 months (whichever comes first).ÖÖ
13 Drive chain• Check chain slack.
• Adjust if necessary. Make sure that the rear wheel is properly
aligned.
• Clean and lubricate. Every 1,000 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).ÖÖ
15*Chassis fasteners• Make sure that all nuts, bolts and screws are properly tightened.
• Tighten if necessary.ÖÖ
16 Sidestand• Check operation.
• Lubricate and repair if necessary.ÖÖ
17*Sidestand switch• Check operation.
• Replace if necessary.ÖÖÖ
18*Front fork• Check operation and for oil leakage.
• Correct accordingly.ÖÖ
19*Rear shock absorber
assembly• Check operation and shock absorber for oil leakage.
• Replace shock absorber assembly if necessary. ÖÖ
20*Rear suspension relay
arm and connecting arm
pivoting points• Check operation.
• Lubricate with molybdenum disulfide grease every 24,000 km or
24 months (whichever comes first).ÖÖ
21*Carburetors• Check engine idling speed, synchronization and starter operation.
• Adjust if necessary.ÖÖÖ NO. ITEM CHECKS AND MAINTENANCE JOBSINITIAL
(1,000 km)EVERY
6,000 km
or
6 months
(whichever
comes first)12,000 km
or
12 months
(whichever
comes first)
E_4sv_Periodic.fm Page 3 Tuesday, August 31, 1999 3:45 PM
Page 73 of 103
PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6
EAU02985
Brake and clutch lever
lubricationLubricate the pivoting parts.
EAU02986
Sidestand lubricationLubricate the sidestand pivoting point
and metal-to-metal contact surfaces.
Check that the sidestand moves up
and down smoothly.
EW000113
WARNING
@ If the sidestand does not move
smoothly, consult a Yamaha dealer. @
EAU00790
Rear suspension lubricationLubricate the pivoting parts.
Recommended lubricant:
Engine oil
Recommended lubricant:
Engine oil
Recommended lubricant:
Molybdenum disulfide grease
E_4sv_Periodic.fm Page 25 Tuesday, August 31, 1999 3:45 PM
Page 95 of 103

SPECIFICATIONS
8-3
8
Maximum load* 196 kg
Air pressure (cold tire)
up to 90 kg load*
Front 250 kPa (2.50 kg/cm
2, 2.50 bar)
Rear 250 kPa (2.50 kg/cm2, 2.50 bar)
90 kg load ~ maximum load*
Front 290 kPa (2.90 kg/cm2, 2.90 bar)
Rear 290 kPa (2.90 kg/cm2, 2.90 bar)
High speed riding
Front 290 kPa (2.90 kg/cm2, 2.90 bar)
Rear 290 kPa (2.90 kg/cm2, 2.90 bar)
* Load is total weight of cargo, rider, passenger and accessories.
Wheels
Fr on t
Ty p e C a s t
Size 17 ´ MT 3.50
Rear
Ty p e C a s t
Size 17 ´ MT 5.50
Brakes
Fr on t
Type Dual disc brake
Operation Right hand operation
Fluid DOT 4Rear
Type Single disc brake
Operation Right foot operation
Fluid DOT 4
Suspension
Fr on t
Ty p e Te l e s c o p i c f o r k
Inner tube outer
diameter 48 mm
Rear
Type Swingarm (link suspension)
Shock absorbers
Front Coil spring/oil damper
Rear Coil spring/gas-oil damper
Wheel travel
Front 120 mm
Rear 120 mm
Electrical systems
Ignition system T.C.I. (digital)
Charging system
Type A.C. generator
Standard output 12 V, 28 A @ 5,000 r/min
Battery
Type YTX14-BS
Voltage, capacity 12 V, 12 AH
E_4sv_Spec.fm Page 3 Tuesday, August 31, 1999 3:47 PM