Page 1-3

SPECIFICATIONS

ITEMSPECIFICATION
DIMENTIONS Overall length
Overall width
Overall height
Wheelbase
Seat height
Foot peg height
Ground clearance
Dry weight
Curb weight
2,085 mm (82.1 in)
750 mm (29.5 in)
1,075 mm (42.3 in)
1,430 mm (53.3 in)
778 mm (30.6 in)
355 mm (14.0 in)
155 mm (6.1 in)
168 kg (370.3 lb)
184 kg (405.6 lb)
FRAME Type
Front suspension, travel
Rear suspension, travel
Gross vehicle weight rating
Maximum weight capacity
Front tire size
Rear tire size
Twin tube diamond, aluminum
Telescopic fork, 130 mm (5.12 in)
Swingarm, 120mm (4.72 in)
291 kg (642 lb)
156 kg (345 lb)
110/80-17 57H Tubless type
150/70-17 69H Tubless type
Cold Tire Pressure Up to 90 kg
(200 lb) load
Front
Rear
225 kPa (2.25 kg/cm2, 33 psi)
225 kPa (2.25 kg/cm2, 33 psi)
Up to macimum
weight capacity
Front
Rear
225 kPa (2.25 kg/cm2, 33 psi)
250 kPa (2.50 kg/cm2, 36 psi)
Front brake, lining swept area
Rear brake, lining swept area
Fuel capacity
Fuel reserve capacity
Caster angle
Trail length
Fork oil capacity, '88
Fork oil capacity, after '88
Fork oil level, '88
Fork oil level, after '88
Hydraulic single disk, 262 x 2 cm2 (40.6 x 2 sq in)
Hydraulic single disk, 200 x 2 cm2 (31.0 x 2 sq in)
12.0 lit (3.18 US gal, 2.64 Imp gal)
2.0 lit (2.10 US qt, 1.76 Imp qt)
27°
111 mm (4.37 in)
497 cc (16.8 US oz, 17.4 Imp oz)
502 cc (16.9 US oz, 17.6 Imp oz)
133 mm (5.2 in)
128 mm (5.0 in)
ENGINEType

Cylinder arrangement
Bore and stroke
Displacement
Compression Ratio
Valve train
Oil Capacity
         after disassembly:
         with oil filter:
         after draining:
Coolant capacity
         Coolant change:
         Total system:
Lubrication system
Air filtration
Cylinder compression
Intake valve
         Opens:
         Closes:
Exhaust Valve
         Opens:
         Closes:
Valve clearance (cold)
         intake:
         exhaust:
Engine weight
Idle speed
Water cooled twin, 4 stroke SOHC (Single Over Head
Camshaft) engine
2 Cylinderts 52° V
79.0 x 66.0 mm (3.11 x 2.60 in)
647 cc (39.4 cu-in)
9.4 : 1
Silent, multi-link chain drive and OHC with rocker arms

2.8 lit (2.94 US qt, 2.46 Imp qt)
2.3 lit (2.43 US qt, 2.02 Imp qt)
2.2 lit (2.32 US qt, 1.94 Imp qt)

1.6 lit (1.51 US qt, 1.41 Imp qt)
2.2 lit (2.32 US qt, 1.94 Imp qt)
Forced pressure and wet sump
Paper filter
1,324 ± 196 kPa (13.5 ± 2 kg/cm2, 192 ± 28 psi)

10° BTDC at 1mm lift
40° ABDC      "

40° BBDC      "
10° ATDC      "

0.15 ± 0.02 mm (0.006 ± 0.0008 in)
0.20 ± 0.02 mm (0.008 ± 0.0008 in)
80 kg (176 lb)
1,200 ± 100 rpm

Page 1-4

ITEMSPECIFICATIONS
CARBURATION Carburator type
Identifcation number
Pilot screw initial setting
Float level
Constant velocity dual carburator
VDGKA [VDGLA]
See page 4-14
9.2mm (0.36 in)
DRIVE TRAIN Clutch
Transmission
Primary reduction
Final reduction
Gear Ratio I
Gear Ratio II
Gear Ratio III
Gear Ratio IV
Gear Ratio V
Gear shift pattern
Cable Operation, multi-plate, wet
5-speed
1.888 (32/68)
2.750 (16/44)
2.769 (13/36)
1.882 (17/32)
1.450 (20/29)
1.174 (23/27)
0.965 (29/28)
Left foot operated return system, 1-N-2-3-4-5
ELECTRICAL Ignition
Ignition timing "F" mark
Full advance
Starting system
Alternator
Battery Capacity
Spark plug
           Standard:
           For cold climate (below 5° C, 41° F):
           For extended high speed riding:
Spark plug gap
Firing order
Fuse/Main fuse
Digitized full transistor system
10° BTDC at idle
31° BTDC at 7,000 ± 200 rpm
Starter motor
240 W/5,000 rpm
12 V 8 Ah    MF Battery
      NGK                       ND
DPR8EA-9            X24EPR-U9
DPR7EA-9            X22EPR-U9
DPR9EA-9            X27EPR-U9
0.80-0.90 mm (0.031 - 0.035 in)
Front - (232°) - Rear (488°) - Front
10 A x 6, 15 A x 1 / 30 A
LIGHTS Headlight (high/low beam)
Tail/brakelight
Front turn signal/running light
Rear turn signal light
Instrument light
Oil pressure warning light
High beam indicator
Turn signal indicator
Neutral indicator
12 V - 60/55 W
12 V - 2/32 cp x 2 SAE No. 1157
12 V - 32/3 cp x 2 SAE No. 1034
12 V - 32 cp x 2 SAE No. 1073
12 V - 3.4 W x 1, 1.7 W x 2
12 V - 3.0 W
12 V - 3.0 W
12 V - 3.0 W x 2
12 V - 3.0 W

Page 1-5

Torque Values

This all was coppied directly (I hope) from the Honda official service manual. if you have doubts about my transcription,
(if it looks funny, check it) check out the scans of the original pages, they can be found here:
page 1-5
page 1-6
Note that I changed the note number on page 1-6 so the html reference would match up. This only affects one line, regarding the thermostatic switch.

Standard torque values

TYPETORQUE N.m (kg-m, ft-lb)
5 mm bolt, nut 5 ( 0.50, 3.6)
6mm bolt, nut 10 (1.0, 7.2)
8mm bolt, nut 22 (2.2, 16)
10mm bolt, nut 35 (3,5, 25)
12mm bolt, nut 55 (5.5, 40)
5mm screw 4 (0.40, 2.9)
6mm screw, 6mm bolt with 8mm head 9 (0.9, 6.5)
6mm flange bolt, nut 12 (1.2, 9)
8mm flange bolt, nut 27 (2.7, 20)
10mm flange bolt, nut 40 (4.0, 29)

Engine

ItemThread diameter
(mm)
Torque
N.m (kg-m, ft-lb)
Remark
Spark plug 12 14 (1.4, 10)
Cylinder head cover bolt 6 10 (1.0, 7.2) Special bolt
Camshaft holder bolt 8 23 (2.3, 17)
      8mm nut 8 23 (2.3, 17)
      6mm bolt 6 10 (1.0, 7.2)
Cylinder head nut 10 48 (4.8, 35)
      bolt 8 23 (2.3, 17)
      8mm nut 8 23 (2.3, 17)
      6mm bolt 6 10 (1.0, 7.2) socket bolt
Camshaft sprocket bolt 7 23 (2.3, 17) NOTE 1
Cluch lock nut 18 130 (13.0, 94) Staked nut.
right crancase cover bolt 6 10 (1.0, 7.2)
left crancase cover bolt 6 10 (1.0, 7.2)
Oil filter cartridge 20 10 (1.0, 7.2) Apply clean engine oil to the O-ring
Oil drain bolt 14 35 (3.5, 25)
Neutral Switch 10 12 (1.2, 9)
Oil pressue switch - 12 (1.2, 9) NOTE 4
Primary drive gear bolt 12 90 (9.0, 65) UBS bolt, NOTE 2
Flywheel bolt 12 130 (13.0, 94) Left hand threads, NOTE 2
Starter one way clutch 8 30 (3.0, 22) Torx bolt, NOTE 1
Oil controll bolt 10 23 (2.3, 17)
Oil pipe bolt 7 10 (1.0, 7.2) Special Bolt
Connecting rod cap nut 8 34 (3.4, 25)
Crankcase bolt 8 27 (2.7, 20) NOTE 2
6 12 (1.2, 9) NOTE 2
Shift drum stopper plate bolt 6 26 (2.6, 19) NOTE 1
Insulator band screw 5 4 (0.4, 2.9) NOTE 2
Timing hole cap 14 10 (1.0, 7.2) NOTE 3
Crankshaft hole cap 30 15 (1.5, 11) NOTE 3
Oil pump driven sprocket bolt 6 15 (1.5, 11) NOTE 1
Valve adjusting screw lock nut 7 23 (2.3, 17)
Cylinder stud bolt 8mm 8 20-30 (2.0-3.0, 14-22) NOTE 1, Refer section 10.
     10mm 10 30-50 (3.0-5.0, 22-36) NOTE 1, Refer section 10.

Page 1-6

Frame

Item thread diameter
(mm)
Torque
N.m (kg-m, ft-lb)
Remark
Front engine bracket bolt 8 28 (2.8, 20)
Front engine mounting bolt 10 40 (4.0, 29)
Rear upper engine mounting bolt 10 40 (4.0, 29) NOTE 2
     --mounting bolt lock nut 22 55 (5.5, 40)
     --mounting bolt adjusting bolt 22 11 (1.1, 8)
Gearshift arm bolt 6 12 (1.2, 9)
Thermostatic switch 16 18 (1.8, 13) NOTE 4
Exhaust pipe joint nut 8 27 (2.7, 20)
Muffler band bolt 8 27 (2.7, 20)
Muffler mounting bolt 8 27 (2.7, 20)
Fuel tank mounting bolt -- front 6 12 (1.2, 9)
Fuel tank mounting bolt -- rear 8 22 (2.2, 16)
Fuel filter bracket bolt 6 22 (2.2, 16)
Front brake master cylinder holder 6 12 (1.2, 9)
Brake oil bolt 10 30 (3.0, 22)
Brake resevoir screw 4 1.5 (0.2, 1.4)
Bleed valve 7 6 (0.6, 4.3)
Front caliper mounting bolt 8 27 (2.7, 20) Flange bolt
Front caliper pin bolt 10 28 (2.8, 20)
Pad pin 10 17 (1.7, 12)
Pad pin plug 10 2.5 (0.25, 1.8
Front brake disk retaining bolt 8 40 (4.0, 29) NOTE 1
Rear brake resevoir mounting screw 6 9 (0.9, 6.5)
Rear brake disk retaining bolt 8 35 (3.5, 25)
     --retaining bolt lock nut 8 9 (0.9, 7)
Rear caliper mounting bolt 8 27 (2.7, 20)
Rear caliper pivot bolt 8 22 (2.2, 16)
Brake torque rod bolt 10 35 (3.5, 25)
Handlebar pinch bolt 8 27 (2.7, 20)
Ignition switch mounting bolt 8 25 (2.5, 18)
Fork pinch bolt (upper) 7 11 (1.1, 8)
Fork pinch bolt (lower) 10 50 (5.0, 36) NOTE 2
Fork tube cap - 23 (2.3, 17)
Fork socket bolt 8 17 (1.7, 12) NOTE 1
Steering bearing adjustment nut 26 20 (2.0, 14) NOTE 2
Steering stem nut 24 105 (10.5, 76) Flange nut
Front axle bolt 14 60 (6.0, 43)
Front axle pinch bolt 8 22 (2.2, 16)
Rear Wheel nut 18 120 (12.0, 87)
Eccentric bearing carrier lock nut 35 165 (16.5, 120) Staked nut
Shock absorber upper mounting bolt 12 65 (6.5, 47) Flange bolt
Shock absorber lower mounting bolt 10 45 (4.5, 33) Cap nut
Shock absorber damper rod lock nut 14 62 (6.2, 45) NOTE 1
Swingarm adjusting bolt 26 15 (1.5, 11)
Swingarm adjusting bolt lock nut 26 65 (6.5, 47)
Swingarm pivot nut 14 65 (6.5, 47)
eccentric bearing carrier pinch bolt 16 75 (7.5, 54)
Sprocket mounting bolt 8 43 (4.3, 31)
Foot peg bracket bolt 8 27 (2.7, 20)
Sub-frame mounting bolt 10 40 (4.0, 29)
Side stand pivot bolt 10 38 (3.8, 27)
Side stand bracket bolt 8 28 (2.8, 20)
Center stand mounting bolt 10 55 (5.5, 40) Using a box wrench.
Ignition switch mounting bolt 6 25 (2.5, 18) Torx bolt.
NOTE 1: Apply a locking agent to the threads.
NOTE 2: Apply clean engine oil to the threads.
NOTE 3: Apply molybdenum disulfide grease to the threads.
NOTE 4: Apply sealant to the threads.