Table of Contents
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1970 Sportster
- Vehicle Identification Number (VIN) is stamped on the right side of the engine crankcase and on the frame steering head.
- 4A13675H0 is a 1970 XLCH.
Model Code | Model Number | Serial Number | Manufacturer ID | Model Year |
XLH | 3A | 10,000 and up (5 digits) | H (for Harley Davidson) | 0 (1970) |
XLCH | 4A | 10,000 and up (5 digits) | H (for Harley Davidson) | 0 (1970) |
XR-750 | 1C | 10,000 and up (5 digits) | H (for Harley Davidson) | 0 (1970) |
Engine- 883
- Engine type: Air Cooled, Overhead Valve, V-twin 1)Iron Head
- Displacement: 54 ci / 883 cc
- Hemi-spherical style heads
- Bore: 3 in / 7.62 cm 2)
- Stroke: 3.8125 in / 9.68 cm 3)
- Piston Displacement: 53.9 cu. in. / 883 cc 4)
- 90 Degree Valve Angle
- Compression: 9.0:1 5)
- Horsepower: 58 @ 6800 rpm 6)
- Torque: 52 ft-lb / 2.191 Nm @ 3800 rpm 7)
- Fuel System: Tillotson Carburetor 8)
- Carburetor Main Jets:
- Carburetor Slow Jet:
- Engine Idle Slow Speed:
- Engine speed for setting ignition timing:
- Fuel Tank Capacity:
- Oil Tank Capacity w/Filter:
Capacities
Dimensions
XL, XLH | XLCH | |
---|---|---|
Wheelbase | 58 1/2 in / 148.59 cm | 58 1/2 in / 148.59 cm |
Overall Length | 87 1/4 in / 221.61 cm | 87 1/4 in / 221.61 cm |
Overall Width | 33 in / 83.82 cm | 33 in / 83.82 cm |
Overall Height | 40 1/2 in / 103 cm | 42 in / 106.7 cm |
Road Clearance | 6 3/4 in / 17.145 cm | 6 1/2 in / 16.51 cm |
Drivetrain
- Constant Mesh - Foot shift
- Speeds - 4 Forward
- Number of Sprocket Teeth
- Engine: 34
- Clutch: 59
- Transmission: 20 (XLCH 19)
- Rear Wheel: 51
- Gear Ratios (XL,XLH)
- 1st: 11.16 to 1
- 2nd: 8.08 to 1
- 3rd: 6.11 to 1
- 4th: 4.42 to 1
- Gear Ratios (XLCH)
- 1st: 11.74:1
- 2nd: 8.50:1
- 3rd: 6.43:1
- 4th: 4.66:1
Tires
Goodyear | Yokohama | |
---|---|---|
Front | MM90-19 (3.75×19) Sport Rib | Y-980 (3.75x19T) High Speed |
Rear | 4.25×18 All Traction | Y-622 (4.25x18T) High Speed |
- Tire pressure
- Front: 24 psi / 1.655 bar
- Rear: 30 psi / 2.068 bar
Tire pressure based on 150 lb rider. When weight is exceeded by 50 lbs or more, increase the rear by 2 lbs and front by 1 lb. Repeat for each additional 50 lbs of weight. 14)
Models
XLH 883
What is the Current KBB Value? 15)
XLCH 883
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Harley-Davidson 1970 - 1977 Service Manual
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1970-2010 Haynes Sportster Service and Repair Manual