Page 1-3

SPECIFICATIONS

ITEM				SPECIFICATION
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)
	Cold Tire Pressure	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)
ENGINE	Type 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

ITEM SPECIFICATIONS

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

ITEM	SPECIFICATIONS
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

TYPE	TORQUE 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

Item	Thread 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.