the VIRAGO
YAMAHA VIRAGO 1981-1999

Yamaha XV1100

xv1100  

 full specifications 1988 on

engine
general      
bore x stroke    95.0 x 75.0 mm (3.74 x 2.95 inches)
displacement   1063cc   
compression ratio   8.3 to 1  
       
camshafts        
lobe height        
intake   39.17 mm (1.5421 inch)
  exhaust   39.20 mm (1.5433 inch)
         

base circle

       
  intake   32.17 mm (1.2665 inch)
  exhaust   32.27 mm (1.2705 inch) 
bearing oil clearance     0.020 to 0.061 mm (0.0008 to 0.0024 inch)
journal diameter     24.96 to 24.98 mm (0.9827 to 0.9835 inch)

bearing bore

    25.00 to 25.021 mm (0.9843 to 0.9851 inch)

camshaft runout limit

  0.03 mm (0.0012 inch)
rocker arm inside diameter     14.000 to 14.018 mm (0.5511 to 0.5518 inch)
rocker arm shaft diameter     13.975 to 13.990 mm (0.5501 to 0.5507 inch)
rocker arm to shaft clearance     0.009 to 0.033 mm (0.00035 to 0.00130 inch)
         

cylinders

       
bore diameter        
standard   95.000 to 95.005 mm (3.7402 to 3.7403 inches)
  limit   95.1 mm (3.744 inches)

bore measuring point

    35 mm (1.38 inch) from top of cylinder
taper and out-of-round limit     0.05 mm (0.002 inch)
         
pistons        
piston diameter        
  standard   94.93 to 94.98 mm (3.737 to 3.739 inches)
  first oversize   95.50 mm (3.76 inches)
second oversize 96.00 mm (3.78 inches)
diameter measuring point     3 mm (0.12 inch) from bottom of piston skirt
piston-to-cylinder clearance     0.045 to 0.065 mm (0.0018 to 0.0026 inch)
         
Ring side clearance        
  Top ring   0.04 to 0.08 mm (0.0016 to 0.0031 inch)
  Second ring   0.03 to 0.07 mm (0.0012 to 0.0028 inch)
  Oil ring   Not specified  
Ring thickness        
  Top ring   1.5 mm (0.06 inch)
  Second ring   1.2 mm (0.0472 inch)
  Oil ring (spacer and rails) 2.5 mm (0.0984 inch)
Ring end gap        
  Top ring   0.3 to 0.5 mm (0.012 to 0.020 inch)
  Second ring   0.3 to 0.45 mm (0.012 to 0.018 inch)
  Oil ring   0.2 to 0.7 mm (0.008 to 0.0276 inch)

Ring width

       
  Top and second rings   3.8 mm (0.15 inch)
  Oil ring   3.4 mm (0.13 inch)
         
cylinder head, valves and valve springs      
cylinder head warpage limit     0.03 mm (0.0012 inch)
valve stem bend limit     0.03 mm (0.0012 inch)
valve head diameter        
  intake   47.0 to 47.02 mm (1.850 to 1.858 inch)
  Exhaust   39.0 to 39.2 mm (1.540 to 1.562 inch)
valve stem diameter        
  Intake   7.975 to 7.990 mm (0.311 to 0.314 inch)
  Exhaust   7.960 to 7.975 mm (0.3134 to 0.3140 inch)
valve head edge thickness limit     1.3 +/- 0.2 mm (0.051 +/- 0.008 inch)
valve guide inside diameter     8.000 to 8.012 mm (0.3150 to 0.3155 inch)
valve seat width limit     1.3 +/- 0.1 mm (0.051 +/- 0.004 inch)
valve face width     2.1 mm (0.083 inch)
valve inner spring free length     43.39 mm  (1.708 inch)
valve inner spring installed length     38.0 mm (1.496 inch)
valve inner spring bend limit     1.9 mm (0.0748 inch)
valve outer spring free length      45.33 mm (1.785 inch)
valve outer spring installed length     40.0 mm (1.575 inch)
valve outer spring bend limit     1.9 mm (0.0748 inch)
         
crankshaft, connecting rods and bearings      
connecting rod side clearance      0.370 to 0.474 mm (0.0146 to 0.0187 inch)
connecting rod bearing oil clearance      0.030 to 0.054 mm (0.0012 to 0.0021 inch)
crankshaft runout limit      0.02 mm (0.0008 inch)
         

oil pump

       
inner to outer rotor clearance     0.03 to 0.09 mm (0.0012 to 0.0035 inch)
outer rotor to housing clearance      0.03 to 0.08 mm (0,0012 to 0.0031 inch)
rotor to straightedge clearance     0.03 to 0.09 mm (0.0012 to 0.0035 inch)
fuel and exhaust XV1100 models
fuel grade      
    Regular unleaded petrol gasoline
       
fuel tank      

Capacity

 

     
  Total   16.8 litres (4.43 US gal) (3.69 Imperial gal)
  Reserve   3.0 litres (0.79 US gal) (0.66 Imperial gal)
carburettors      
Type     Mikuni BST40 (two)  
         

Main jet

  Rear cylinder   122.5  
  Front cylinder   125  
Main air jet     50  
Jet needle     Y-33  
Needle jet     3.2  
Pilot air jet     100  
Pilot jet     40  
Pilot screw     Preset (turns out not specified)  
Valve seat size     1.4  
Starter jet     40  
Fuel level     0 +/-1.0 mm (0 +/- 0.039 inch)  
         
tightening torques        
  carburettor joint bolts   10Nm (7.2ft-lbs)
  exhaust pipe-to-cylinder head nuts   20Nm (14ft-lbs)
         
clutch
clutch      
Friction plate thickness      
  Standard 2.9 to 3.1 mm (0.116 to 0.124 inch)
  Minimum 2.8 mm (0.11 inch)
       
steel plate thickness   1.9 to 2.1 mm (0.075 to 0.083 inch)
steel plate warpage limit   0.1 mm (0.004 inch)
pushrod bend limit  0.5 mm (0.02 inch)
     
diaphragm spring height
  Standard 7.2 mm (0.283 inch)
  Minimum 6.5 mm (0.256 inch)
  Warpage limit 0.1 mm  (0.004 inch)
       
transmission
transmission      
drive axle and mainshaft runout limit   0.08 mm (0.0031 inch)
     
torque specifications engine
       
alternator cover bolts   10 nm (7.2 ft-lbs)
alternator cover screws   7 nm (5.1 ft-lbs)
alternator rotor nut      
cam chain damper bolt    8 nm (5.8 ft-lbs)
cam chain damper bolt locknut   12 nm (8.7 ft-lbs)
cam chain tensioner bolts   10 nm (7.2 ft-lbs)
cam sprocket bolt   55 nm (40 ft-lbs)
cam sprocket cover bolts   10 nm (7.2 ft-lbs)
camshaft retainer bolts   20 nm (14 ft-lbs)
clutch push screw locknut   12 nm (8.7 ft-lbs)
clutch boss nut   70 nm (50 ft-lbs) (4)
clutch cover bolts   10 nm (7.2 ft-lbs)
clutch pressure plate screws   8 nm (5.8 ft-lbs)
clutch diaphragm spring bolts   10 nm (7.2 ft-lbs)
connecting-rod nuts   48 nm (35 ft-lbs) (2)
crankcase bolts  (6 mm) 10 nm (7.2 ft-lbs)
crankcase bolts (10 mm) 39 nm (28 ft-lbs)
cylinder bolts   10 nm (7.2 ft-lbs)
cylinder head bolts (8 mm)  20 nm  (14 ft-lbs)
cylinder head nuts (10 mm) 35 nm (25 ft-lbs)
cylinder head nuts (12 mm) 50 nm (36 ft-lbs)
intermediate gear stopper plate bolts   10 nm (7.2 ft-lbs)
oil line union bolts   20 nm (14 ft-lbs) (1)
oil pump bolts   10 nm (7.2 ft-lbs)
oil pump chain cover bolts   10 nm (7.2 ft-lbs)
oil pump sprocket bolts   12 nm (8.7 ft-lbs)
primary drive gear nut   110 nm (80 ft-lbs)
rocker arm cover bolts   10 nm (7.2 ft-lbs)
rocker arm shaft holding bolts   38 nm (27 ft-lbs)
shift fork guide bar stopper screws   7 nm (5.1 ft-lbs)
shift pedal pinch bolt   10 nm (7.2 ft-lbs)
       
ignition
general      
spark plug cap resistance   5000 Ω at 20 degrees C (68 degrees F)
spark plug arcing distance   6mm (¼ inch)
pickup coil resistance      
  dual pick up coils 124 to 186 Ω at 20 degrees C (68 degrees F)
  single pickup coils 182 to 222 Ω at 20 degrees C (68 degrees F)
pressure sensor output voltage   3.00 +/- 0.05 volts
ignition timing not adjustable  
     

ignition coil

     
primary resistance   3.57 to 4.83 Ω at 20 degrees C (68 degrees F)
secondary resistance   11,220 to 15180 Ω at 20 degrees C (68 degrees F)
       
       
steering suspension and final drive
front suspension        
fork spring length     513 mm (20.2 inches)
fork oil US        
  fork oil capacity    372 cc (12.6 US fl oz) (13.1 Imp fl oz)
  fork oil type   SAE 10W fork oil  
  fork oil level   179 mm (7.0 inches) below top of inner fork tube *
         
fork oil UK    
  fork oil capacity    389 cc (13.1 US fl oz) (13.7 Imp fl oz)
  fork oil type   SAE 10W fork oil  
  fork oil level   179 mm (7.0 inches) below top of inner fork tube *
     
      *with spring removed and fork fully compressed.
       

the fork oil capacity can be increased on UK 1989-on XV1100 models from 396 cc to 409 cc if a clicking sound is heard from forks when travelling over uneven road surfaces or under hard braking. If the increased capacity is used, the oil level will be 137 mm

         
rear suspension        
rear spring free length     216.5 mm (8.5 inches)
rear spring sag limit     5 mm (0.2 inch)
swingarm endplay and sideplay limits     1 mm (0.04 inch)
         
torque specifications suspension
front forks        
Damper rod bolt     23 nm (17 ft-ibs)**
Upper triple clamp pinch bolts     20 nm (14 ft-lbs)
Lower triple clamp pinch bolts     23 nm (17 ft-lbs)
Cap bolt     23 nm (17 ft-lbs)
         

handlebars and steering stem

       
Handlebar bracket to upper triple clamp nuts na
Handlebar pinch bolts     20 nm (14 ft-lbs)
Steering stem nut     110 nm (80 ft-lbs)
Steering head bearing ring nut see guide        
         

rear shock absorbers

       
Rear shock absorber upper bolts     20 nm (14 ft-lbs)
Rear shock absorber lower bolts/nuts      30 nm (22 ft-lbs)
     

swingarm pivot shafts

       
Left pivot shaft     100 nm (72 ft-lbs)
Right pivot shaft     5.5 nm (4 ft-lbs)
Right pivot shaft nut     100 nm (72 ft-lbs)
Final drive unit to swingarm nuts     43 nm (32 ft-lbs)
         
brakes wheels and suspension
brakes        
brake fluid    

-

 
front brake disc thickness        
  standard   5.0 mm (0.20 inch)
  minimum   4.5 mm (0.18 inch)

refer to marks stamped into the disc (they may supersede information printed here)

         
disc runout limit     0.15 mm (0.006 inch)
front brake pad thickness        
new (except 1994-on uk) 5.5 mm (0.217 inch)
wear limit 0.5 mm (0.020 inch)
     
  new (1994-on uk)   6.1 mm (0.24 inch)
  wear limit   0.8 mm (0.03 inch)
     
rear brake drum inside diameter    
  standard   200 mm (7.87 inches)
  maximum   201 mm (7.91 inches)
rear brake shoes lining thickness        
  standard   4 mm (0.16 inches)
  minimum   2 mm (0.08 inches)
         

wheels and tyres

       
wheel runout    
  radial (up-and-down)   2.0 mm (0.08 inch)
  axial (side-to-side)   2.0 mm (0.08 inch)
tyre pressures     see service specifications  
tyre sizes        
  front   100/90 19 57h  
  rear (except 1994-on uk)   140/90 15 70h  
  rear (1994-on uk)   140/90 15 m/c 70h  
         
torque specifications brakes wheels and suspension
front        
front axle or axle nut     105 nm (75 ft-lbs)*
front axle pinch bolt     20 nm (14 ft-lbs)
brake disk mounting bolts     20 nm (14 ft-lbs)
caliper mounting bolts        
 

all except 1994 uk

  35 nm

(25 ft-lbs)

  1994 uk   na  
fluid hose union bolts     26 nm (19 ft-lbs)
caliper bleed valve     6 nm (4.3 ft-lbs)
master cylinder clamp bolts 9 nm (6.5 ft-lbs)

rear

       
rear brake cam lever bolt     9 nm (6.5 ft-lbs)
     
electrics
battery        

type

    12 v, 20Ah  
         
fuse specifications        
main     30 amps  
headlight     15 amps  
turn signals     15 amps  
ignition     10 amps  
tail / brake light     10 amps  
         
charging system        
stator coil resistance   0.5 ohms +/ 10 per cent at 20-degrees c (68-degrees f)
charging system output   14.3 to 15.3 volts at 2000 rpm  
         
starter        
starter commutator diameter        
  standard   28 mm (1.1 inch)
  minimum   27 mm (1.06 inch)
  mica undercut   0.5 mm (0.02 inch)
starter brush length        
  standard   12.5 +/- 5 mm (0.492 +/- 0.02 inch)
  minimum   5.5 mm (0.217 inch)
starter clutch spring clip turning force        
  idle gear   2.2 to 2.5 kg (4.9 to 5.5 lbs)
  starter gear   2.0 to 2.3 kg (4.4 to 5.1 lbs)
         
bulb specifications (1984 and later us models)        
headlight      60/55w  
tail/brake lights      8/27w  
turn signals/running lights     27w  
instrument and warning lights     4w  
         
bulb specifications (1984 and later uk models)        
headlight     60/55w  
tail/brake lights     5/21w  
parking light 4w
turn signals     21w  
instrument and warning lights     3w  
         
torque specifications electrics
alternator rotor nut     175 nm (125 ft-lbs)
alternator cover bolts     7 nm (5.1 ft-lbs)
starter mounting bolts     10 nm (7.2 ft-lbs)
starter solenoid nuts     8 nm (5.8 ft-lbs)*
drive lever cover bolts     10 nm (7.2 ft-lbs)
drive lever collar screw     10 nm (7.2 ft-lbs)*
         

*apply non-permanent thread locking agent to the threads.

     
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