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Honda Cb125s 1975 Owners Manual

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View and Download Honda CB125 service manual online. CB125 motorcycle pdf manual download. Also for: Cb160. Honda CB125 CL125 CB CL 125 Model Service Specifications Manual. Honda CB125 CD125 SL125 Single Service Maintenance Repair Manual 1973 - 1985. Honda CB125 Twin CB 125 Workshop Service Repair Manual 1966 - 1969. Honda CB160 CB 160 Sport Exploded View Parts Diagram Schematics 1964 - 1969. Honda CB160 Twin CB 160 Workshop Service Repair Manual.

Honda CB125S
Manufacturer
Production 1970 - 1984
ClassStreet
PredecessorHonda CB125
Engine
single cylinder, four-stroke
Bore / Stroke52.4mm x 57.8mm
Compression ratio9.2:1
Top Speed75 mph (120 km/h)
Horsepower10.19 HP (7.6 KW) @ 7750RPM
Torque7.52 ft/lbs (10.2 Nm) @ 6250RPM
Fuel Systemcarburetor
Spark PlugNGK DR8ES-L '82 , '84-85
NGK D8EA 73-75 , '76-80 , '81
BatteryYUASA 6N6-3B 73-75 , '76-80
YUASA 6N6-3B-1 '81 , '82
YUASA YB2.5L-C '84-85
TransmissionGear box: 5-speed
Clutch: wet, multi plate with coil springs
Final DriveChain: 428x110
Front Sprocket14T
Rear Sprocket43T
SuspensionFront: telescopic fork (31mm diameter)
Rear: dual rear shocks with 5-step spring preload adjustment
BrakesFront: single disc. two-piston calipers.
Rear: expanding brake (drum brake)
Front Tire2.75-18 73-85
Rear Tire2.75-17 73-75
3.00-17 '76-80 , '81 , '82
3.00-18 '84-85
Wheelbase 50.98 inches (1295 mm)
Length 80.12 inches (2035 mm)
Width 30.12 inches (765 mm)
Height 42.52 inches (1080 mm)
Seat Height 30.51 inches (775 mm)
Weight282.19 pounds (128.0 Kg) (dry), 128.0 kg (wet)
Oil Capacity 0.26 Gallon (1.00 Liters)
Recommended OilHonda GN4 10W-40
Fuel Capacity3.43 Gallon (13.00 Liters)
Fuel Consumption100 MPG
RelatedHonda CB125
Honda CB125T
Honda CB125N
Honda CB125F
Honda CB175K
Honda CD125
Honda CL125
Honda SL125
Honda TL125
Manuals File:Honda CB100 CL100 SL100 Service Maintenance Repair Manual 1970-73.pdf
More Manuals


The Honda CB125S was a single cylinder, four-stroke Sport Bike motorcycle produced by Honda between 1970 and 1984. It could reach a top speed of 75 mph (120 km/h). Max torque was 7.52 ft/lbs (10.2 Nm) @ 6250 RPM. Claimed horsepower was 10.19 HP (7.6 KW) @ 7750 RPM. It replaced the inline twin cylinder Honda CB125.


The CB125S came in two major versions the '71-75 'S' version and the '76 and later 'J' version although the bikes in the US retained the S designation. It features an overhead camshaft (OHC) engine with a 9500 rpm redline and offers 100 mpg. It could comfortably maintain speeds of 55 mph and had a top speed of around 65 mph. The engine could last tens of thousands of miles with only minimal attention; however, the oil had to be changed regularly (700 miles) to prevent premature wear of the camshaft bearings. The newer 'J' model sported a two piece head, 124cc displacement, and a larger carburetor, but it did not perform as well as the earlier models.


These are interesting as the side cam drive type engine is a lot lighter then the center cam chain type, the bore and stroke also favors higher revs and more performance. The weakness if this machine, rather like the CB92 before it, was the four speed box compromised its performance, and the lack of a rev counter was also a problem.

These problems were addressed with the very much rarer Honda CB125K2.


Engine[edit]

The engine was a air cooled single cylinder, four-stroke. A 52.4mm bore x 57.8mm stroke result in a displacement of just 124.7 cubic centimeters. Fuel was supplied via a overhead cams (ohc).

Drive[edit]

The bike has a 5-speed transmission. Power was moderated via the wet, multiplate with coil springs.

Chassis[edit]

It came with a 80/100-18 front tire and a 90/90-18 rear tire. Stopping was achieved via single disc. two-piston calipers. in the front and a expanding brake (drum brake) in the rear. The front suspension was a telescopic fork (31mm diameter) while the rear was equipped with a dual rear shocks with 5-step spring preload adjustment. The CB125F was fitted with a 3.43 Gallon (13.00 Liters) fuel tank. The bike weighed just 282.19 pounds (128.0 Kg). The wheelbase was 50.98 inches (1295 mm) long.


1973[edit]

1973 Honda CB125


The CB125S0 was sold in 1973 and came in two available colors: Candy Topaz Orange or Candy Peacock Green. The gas tank stripe was white and black. The fenders were chrome. The front brake was a drum brake. The instrument was only a speedometer. The ignition used breaker points. The engine was a 122cc OHC single cylinder with a one-piece cylinder head. The transmission was a 5-speed. The serial number began CB125S-1021922.

Manual
  • Spark Plug: NGK D8EA

1974[edit]


The CB125S1 was sold in 1974 and came in just one color: Candy Topaz Orange. The gas tank had a black panel with white pinstripes. The diamond-shaped side cover wing emblem was red. The front brake was a mechanical actuated disc. The fenders were chrome. The instruments now had both a speedometer and a tachometer. The ignition used breaker points. The engine was a 122cc OHC single cylinder with a one-piece cylinder head. The transmission was a 5-speed. The serial number began CB125S-1021922.

1975[edit]

1975 Honda CB125
1975 Honda CB125S2 in Blue
1975 Honda CB125S2 in Blue
1975 Honda CB125S2 in Blue
1975 Honda CB125S in Blue
1975 Honda CB125S in Blue
1975 Honda CB125S in Blue
1975 Honda CB125S in Blue


The CB125S2 was sold in 1975 and came in just one color: Candy Riviera Blue. The 'CB125' side cover emblem was white and yellow. The chrome rear shock cover was deleted. The fenders were chrome. The front brake was a mechanical actuated disc. The instruments now had both a speedometer and a tachometer. The ignition used breaker points. The engine was a 122cc OHC single cylinder with a one-piece cylinder head. The transmission was a 5-speed. The serial number began CB125S-1021922.

1976[edit]

1976 Honda CB125


The CB125S'76 was sold in 1976 and came in just one color: Aquarius Blue. The 'HONDA' gas tank decal was red with a white outline. Shakori hills spring 2019. The '125S' side cover decal was white and red. The seat color was dark brown. The instruments had a speedometer but no tachometer. The fenders were chrome. The front brake was a mechanical actuated disc. The ignition used breaker points. The engine was a 124cc OHC single cylinder with a 2-piece cylinder head linked to a 6-speed transmission. The serial number began CB125S-1300009.

1978[edit]

1978 Honda CB125

Lorch lathe instruction manual.

The CB125S'78 was sold in 1978 and came in only one color: Fire Red. The gas tank stripe was orange, yellow, white, and black. The 'CB125S' side cover decal was yellow and white. The fenders were chrome. The front brake was a mechanical actuated disc. The instruments had just a speedometer. The ignition used breaker points. The engine was a 124cc OHC single cylinder with a 2-piece cylinder head linked to a 5-speed transmission. The serial number began CB125S-1500003.

1979[edit]

1979 Honda CB125


The CB125S'79 was sold in 1979 and came in one color: Light Ruby Red. The gas tank stripe was red and black. The 'CB125S' side cover decal was red and black. The front brake had a single leading shoe. The fenders were chrome. The instruments had just a speedometer. The ignition used breaker points. The engine was a 124cc OHC single cylinder with a 2-piece cylinder head linked to a 5-speed transmission. The serial number began CB125S-5000001.


1980[edit]

  • 1980 Honda CB125

  • 1980 Honda CB125S in Light Ruby Red

  • 1980 Honda CB125S in Light Ruby Red

  • 1980 Honda CB125S in Light Ruby Red

  • 1980 Honda CB125S in Light Ruby Red

  • 1980 Honda CB125S in Light Ruby Red

The CB125S'80 was sold in 1980 and came in one color: Light Ruby Red. The 'HONDA' decal and stripe were gold with a black outline. The 'CB125S' side cover decal was gold and red with a black outline. The fenders were also Red. The turn signal housings were black plastic. The instruments had just a speedometer. The ignition used breaker points. The engine was a 124cc OHC single cylinder with a 2-piece cylinder head linked to a 5-speed transmission. The serial number began JC04-5100001.

1981[edit]

1981 Honda CB125


The CB125S'81 was sold in 1981 and came in just one color: Black. The gas tank stripes were red and gold. The 'HONDA' and 'CB125S' decals were solid red. The instruments had just a speedometer. The turn signal housings were black plastic. The electrical system used a CD ignition. The engine was a 124cc OHC single cylinder with a 2-piece cylinder head linked to a 5-speed transmission. The serial number began JH2JC040*BK700005.

1982[edit]

1982 Honda CB125


The CB125S'82 was sold in 1982 and came in just one color: Candy Imperial Blue. The gas tank stripes were light blue and dark blue. The 'HONDA' and 'CB125S' decals were gold. The instruments had just a speedometer. The turn signal housings were black plastic. The electrical system used a CD ignition. The engine was a 124cc OHC single cylinder with a 2-piece cylinder head linked to a 5-speed transmission. The serial number began JH2JC040*CK800002.

  • Spark Plug changed to: NGK DR8ES-L

1984[edit]

1984 Honda CB125
1984 Honda CB125


The CB125S'84 was sold in 1984 and came in just one color: Turuna Red. The fuel tank pinstripes were white and dark blue. The wing decal was gray and white. The headlight was round. The instruments had just a speedometer. The turn signal housings were black plastic. The electrical system was now a 12 volt.

  • Engine: 123cc single-cylinder, OHC four-stroke
  • Ignition: Solid state CD ignition
  • Transmission: Wide-ratio five-speed
  • Seat: Long plush seat for two-up riding
  • Wheelbase: 1270mm (50 in.)
  • Seat height: 760mm (29.9 in.)
  • Dry weight: 99 kg (218.2 lb)
  • The serial number began 9C2JC1303ER010001.

1985[edit]

1985 Honda CB125


The CB125S'85 was sold in 1985 and came in one color: Turuna Red. The tank, side cover, and rear fender stripes were blue and white. The 'HONDA' and 'CB125S' decals were white. The headlight was rectangular. The instruments had just a speedometer. The turn signal housings were black plastic. The electrical system was now a 12 volt. The high tension electrical system used a CD ignition. The engine was a 124cc OHC single cylinder with a 2-piece cylinder head linked to a 5-speed transmission. The serial number began 9C2JC1308FR110001.


1970 Honda CB 125[edit]

The 1970 MY Honda CB 125 has, at its heart, an air-cooled, four-stroke, 124cc, twin cylinder powerplant that was paired to a five-speed manual transmission with a chain final drive, and can produce a claimed 15 horsepower and 9 Nm of torque.

Also, it has been fitted with laced wheels, a drum braking system in the front and in the rear, a center stand, a chromed exhaust system, an one-piece, dual seat, wide handlebars, a round headlight, a telescopic front fork, dual shock absorbers as a rear suspension and analogue instrumentation dials.


1971 Honda CB 125[edit]

The 1971 MY Honda CB 125 comes with laced wheels, a drum braking system in the front and in the rear, a center stand, a chromed exhaust system, an one-piece, dual seat, wide handlebars, a round headlight, a telescopic front fork, dual shock absorbers as a rear suspension and analogue instrumentation dials.

In the engine department it is powered by a four-stroke, air-cooled, 124cc, twin cylinder powerplant that was mated to a five-speed manual transmission with a chain final drive, that can reach a maximum power output of 15 horsepower and 9 Nm of torque.


1972 Honda CB 125[edit]

The 1972 MY Honda CB 125 boasts a maximum power output of 15 horsepower and 9 Nm of torque from its air-cooled, four-stroke, 124cc, twin cylinder engine that was mated to a five-speed manual transmission with a chain final drive.

Standard features include laced wheels, a drum braking system in the front and in the rear, a center stand, a chromed exhaust system, an one-piece, dual seat, wide handlebars, a round headlight, a telescopic front fork, dual shock absorbers as a rear suspension and analogue instrumentation dials.


1973 Honda CB 125[edit]

If you're on the market for an entry-level machine from the House of Tokyo, then the 1973 MY Honda CB 125 may be a serious option to take into consideration. It comes with laced wheels, a drum braking system in the front and in the rear, a center stand, a chromed exhaust system, an one-piece, dual seat, wide handlebars, a round headlight, a telescopic front fork, dual shock absorbers as a rear suspension and analogue instrumentation dials.

Also, it can produce a claimed 15 horsepower and 9 Nm of torque from its air-cooled, four-stroke, 124cc, twin cylinder powerplant that was mated to a five-speed manual transmission with a chain final drive.


1974 Honda CB 125[edit]

The Japanese engineers from Honda have designed the 1974 MY CB 125 as an entry-level machine, that could fit the needs for a wide category of riders. It has, at its heart, an air-cooled, four-stroke, 124cc, twin cylinder powerhouse, paired to a five-speed manual transmission with a chain final drive, and could produce a claimed 15 horsepower and 9 Nm of torque.

Also, it was fitted with a one-piece, two-up seat, a rear luggage rack, passenger grab rails, laced wheels, an analogue instrument cluster, a chromed dual exhaust system, a telescopic front fork coupled to dual shock absorbers in the rear, wide handlebars and a front disc brake paired to a rear drum brake.


1975 Honda CB 125[edit]

The 1975 MY Honda CB 125 has standard features such as a one-piece, two-up seat, a rear luggage rack, passenger grab rails, laced wheels, an analogue instrument cluster, a chromed dual exhaust system, a telescopic front fork coupled to dual shock absorbers in the rear, wide handlebars and a front disc brake paired to a rear drum brake.

In the engine department it is powered by an air-cooled, four-stroke, 124cc, twin cylinder powerplant that was mated to a five-speed manual transmission with a chain final drive, and can produce a claimed 15 horsepower and 9 Nm of torque.


1976 Honda CB 125[edit]

The 1976 MY Honda CB 125 boasts a maximum power output of 15 horsepower and 9 Nm of torque from its four-stroke, air-cooled, 124cc, twin cylinder powerplant that was mated to a five-speed manual transmission with a chain final drive.

In addition, it has fittings such as a one-piece, two-up seat, a rear luggage rack, passenger grab rails, laced wheels, an analogue instrument cluster, a chromed dual exhaust system, a telescopic front fork coupled to dual shock absorbers in the rear, wide handlebars and a front disc brake paired to a rear drum brake.


1977 Honda CB 125[edit]

If you're on the market for a lightweight and agile machine, suitable for the younger and less-experienced among riders. It comes with a one-piece, two-up seat, a rear luggage rack, passenger grab rails, laced wheels, an analogue instrument cluster, a chromed dual exhaust system, a telescopic front fork coupled to dual shock absorbers in the rear, wide handlebars and a front disc brake paired to a rear drum brake.

In addition, it can produce a claimed 15 horsepower and 9 Nm of torque from its air-cooled, four-stroke, 124cc, twin cylinder powerhouse, that was mated to a five-speed manual transmission with a chain final drive.


1978 Honda CB 125[edit]

The 1978 MY Honda CB 125 has, at its heart, a four-stroke, air-cooled, 124cc, twin cylinder powerplant that was mated to a five-speed manual transmission with a chain final drive, and can produce a claimed 15 horsepower and 9 Nm of torque.

This machine also comes with features such as a telescopic front fork coupled to dual shock absorbers in the rear, wide handlebars, an analogue instrument cluster, a round headlight, laced wheels, front and rear drum brakes, a one-piece dual seat and a side-stand.


1979 Honda CB 125[edit]

The 1979 MY Honda CB 125 has standard features such as a telescopic front fork coupled to dual shock absorbers in the rear, wide handlebars, an analogue instrument cluster, a round headlight, laced wheels, front and rear drum brakes, a one-piece dual seat and a side-stand.

In the engine department it is powered by an air-cooled, four-stroke, 124cc, twin cylinder powerhouse, paired to a five-speed manual transmission with a chain final drive, that can reach a maximum power output of 15 horsepower and 9 Nm of torque.


1980 Honda CB 125[edit]

The 1980 MY Honda CB 125 boasts a maximum power output of 15 horsepower and 9 Nm of torque from its air-cooled, four-stroke, 124cc, twin cylinder powerplant that was mated to a five-speed manual transmission with a chain final drive.

In addition, it has been fitted with a telescopic front fork coupled to dual shock absorbers in the rear, wide handlebars, an analogue instrument cluster, a round headlight, laced wheels, front and rear drum brakes, a one-piece dual seat and a side-stand.


1981 Honda CB 125[edit]

The House of Tokyo have launched yet another embodiment of their Honda CB 125, especially for those riders who want to experience the world of two-wheel riding for themselves. It comes with a telescopic front fork coupled to dual shock absorbers in the rear, wide handlebars, an analogue instrument cluster, a round headlight, laced wheels, front and rear drum brakes, a one-piece dual seat and a side-stand.

In the engine department it is powered by a four-stroke, air-cooled, 124cc, twin cylinder powerhouse mated to a five-speed manual transmission with a chain final drive, and can produce a claimed 15 horsepower and 9 Nm of torque.


1982 Honda CB 125[edit]

The 1982 MY Honda CB 125 has been created by the Japanese engineers for the younger and less-experienced among riders, but can just as well suit the needs of the more seasoned ones that prefer agility and fuel-efficiency over brute strength. It has, at its heart, a four-stroke, air-cooled, 124cc, twin cylinder powerhouse, mated to a five-speed manual transmission with a chain final drive, and can produce a claimed 15 horsepower and 9 Nm of torque.

Also, it comes equipped with a telescopic front fork coupled to dual shock absorbers in the rear, wide handlebars, an analogue instrument cluster, a round headlight, laced wheels, front and rear drum brakes, a one-piece dual seat and a side-stand.



In Media[edit]

References[edit]

Honda CB series
Early CBs:
Honda CB50 ·Honda CB72 ·Honda CB77 ·Honda CB92
Smaller CBs:
Honda CB125 ·Honda CB160 ·Honda CB175K ·Honda CB200K ·Honda CB200T ·Honda CB250 ·Honda CB350F ·Honda CB350K ·Honda CB360 ·Honda CB1 ·Honda CB400A ·Honda CB400F ·Honda CB400N ·Honda CB400T ·Honda CB400X ·Honda CB450DX-K ·Honda CB450K ·Honda CB450P ·Honda CB450SC ·Honda CB450T
Midsize CBs:
Honda CB500F ·Honda CB500K ·Honda CB500P ·Honda CB500T ·Honda CB500X ·Honda CB500S ·Honda CB550F ·Honda CB550K ·Honda CB550SC ·Honda CB600F ·Honda CB650 ·Honda CB650C ·Honda CB650SC ·Honda CB700SC ·Honda CB750A ·Honda CB750C ·Honda CB750F ·Honda CB750K ·Honda CB750P ·Honda CB750SC
Large CBs:
Honda CB900C ·Honda CB900F ·Honda CB100 ·Honda CB1000 ·Honda CB1000C ·Honda CB1100F ·Honda CB1100SF X11 ·Honda CB1300
Motorcycles:CB series | CBF series | CM/CMX series | CX Series | CBR series | NSR series | CR series | Pacific Coast | XR/XL series | Bros/HawkGT | VF/VFR series | VT series | VTX series | ST series | Valkyrie series | GL series| NR series
Mopeds and light motorcycles:Ape models | Cub series | CT series | ST series/Dax | S series |Wave series | Z series

1975 Honda Cb125s

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