The John Deere L108 is a 2WD lawn tractor from the L100 series. This tractor was manufactured by John Deere in 2005. The John Deere L108 is equipped with a 0.5 L single-cylinder gasoline engine and belt-driven hydrostatic transmission with infinite forward and reverse gears.
The JD L108 lawn tractor used the Briggs & Stratton 31P677 engine. It is a 0.5 L, 500 cm2, (30.51 cu·in) single-cylinder natural aspirated gasoline engine with 90.7 mm (3.57 in) of the cylinder bore and 77.7 mm (3.06 in) of the piston stroke. This engine produced 18.8 PS (13.8 kW; 18.5 HP) of maximum output power.
The John Deere L108 is equipped with manual steering, open operator station and 7.9 liters (2.1 US gal.; 1.7 Imp. gal) fuel tank. The L107 lawn tractor used a mid-mount 42 in (1,060 mm) mower deck with 2-blades with manual lift.
John Deere L108 Specifications
| General Specifications | |
| Model | John Deere L108 |
| Length | 1,750 mm (68.9 in) |
| Width | 910 mm (35.8 in) |
| Height | 980 mm (38.6 in) |
| Wheel base | – |
| Weight | 210 kg (463 lbs) |
| Fuel tank capacity | 7.9 liters (2.1 US gal.; 1.7 Imp. gal) |
| Battery | 12V Type BCI Group U1 |
| Cabin type | Open operator station |
| Engine | |
| Engine model | Briggs & Stratton 31P677 |
| Engine type | Four-stroke, air-cooled, inline |
| Cylinders | 1 |
| Fuel type | Gasoline |
| Displacement | 0.5 L, 500 cm2, (30.5 cu·in) |
| Bore and stroke | 90.7 mm X 77.7 mm (3.57 in X 3.06 in) |
| Horsepower | 18.8 PS (13.8 kW; 18.5 HP) |
| Starter | Electric |
| Oil type | SAE 10W-30; API: SG or SF |
| Oil capacity | 1.9 L (2.01 US. qt, 1.67 Imp. qt.) |
| Spark plug gap | 0.76 mm (0.030 in) |
| Intake valve clearance | 0.076-0.127 mm (0.003-0.005 in) |
| Exhaust valve clearance | 0.13-0.18 mm (0.005-0.007 in.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Manual |
| Brakes | |
| Final drive | |
| Transmission model | Tuff Torq K46 HD |
| Transmission type | Belt-driven hydrostatic |
| Gears | Infinite forward and reverse |
| Speed | Forward: 8.8 kmh (5.5 mph) Reverse: 5.1 (3.2 mph) |
| Tires | |
| Front tires | Lawn/turf: 15×6.00-6 |
| Rear tires | Lawn/turf: 20×8.0-8 |
| PTO (Power take-off shaft) | |
| Front PTO type | Independent with manual clutch |
| Front PTO spped | – |

Does the L108 have an alternator?