Specifications, Service and Repair of Farm and Lawn Tractors

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John Deere L108 Specs

John Deere L108 Engine Specifications

Engine Model - Briggs Stratton 31P677
Engine Type - Air-cooled vertical shaft
Horsepower - 13.8 kW (18.5 hp)
Displacement - 501 cc (30.59 cu.in.)
Bore - 90.60 mm (3.56 in.)
Stroke - 77.78 mm (3.06 in.)
Fuel - Gasoline
Ignition - Module (Armature)
Air Gap - 0.253-0.356 mm (0.010-0.014 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.)
Spark Plug-Gap - 0.76 mm (0.030 in.)
Spark Plug-Torque - 20 Nm (15 lb-ft)
Cylinders - One
Oil Filter - Yes
Oil capacity - 2 qts (1.9 L)
Air Filter - Paper with Foam
Charging System - Regulated Circuit
Charging System Capacity - 9 Amp
Battery Voltage - 12 Volts
Battery Type - BCI Group U1

John Deere L108 Drivetrain

Transmission Type - Belt-driven hydrostatic
Transaxle Manufacturer - Tuff Torq HD K46
Gears - Infinite forward and reverse
Transmission Oil change - Sealed unit, service not recommended
Forward Travel Speed - 0-8.9 km/h (0-5.5 mph)
Reverse Travel Speed -- 0-5.2 km/h (0-3.2 mph)
Chassis - 4x2 2WD
Steering - Manual Steering

JD L108 Power Take-off

Mid PTO - Independent
Clutch - Mechanical

Tires

Size (Front) - 15x6.00-6
Size (Rear) - 20x8.0-8
Tire Pressure (Front) - 97 kPa (14 psi)
Tire Pressure (Rear) - 69 kPa (10 psi)

JD L108 Capacities

Crankcase without oil filter - 1.4 L (1.5 qt)
Crankcase with oil filter - 1.65 L (1.75 qt)
Fuel - 7.9 L (2.1 gal)

Dimensions

Height - 98 cm (38.6 in.)
Length (Overall) - 175 cm (69 in.)
Width (Overall) - 91 cm (36 in.)
Weight - 210 kg (462 lb)

John Deere L108 Mower Deck

Mower Deck - 107 cm (42 in.)
Blades-Rotary - 2
Blade Bolt Torque - 62 Nm (46 lb-ft)
Cutting Height-Approx. - 25-102 mm (1-4 in.)
Cutting Width - 1067 mm (42 in.)

Mower Deck - 122 cm (48 in.)
Blades-Rotary - 3
Blade Bolt Torque - 62 Nm (46 lb-ft)
Cutting Height-Approx. - 25-102 mm (1-4 in.)
Cutting Width - 1219 mm (48 in.)

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JOHN DEERE LAWN TRACTORS SPECIFICATIONS

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ENGINES FOR JOHN DEERE LAWN TRACTORS

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JOHN DEERE TRACTORS ATTACHMENTS
420 430 455 790 990
X300 X320 X330 X350 X475
X485 X500 X540 X570 X590
X700 X720 X738 X758 1023E
2025R 2210 2520 3025E 3032E
3038E 3038R 3039R 3046R 3203
3320 3520 4052R 4066R 4100
4105 4115 4200 4310 4320
4400 4410 4520 4600 4720

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JOHN DEERE FRONT END LOADERS

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JD TRACTORS TROUBLESHOOTING
2640 3040 3310 3650 4100
5050D 5090R 5410 6105R 7200R
E130 L111 LA110 LT155 X300R

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JOHN DEERE FARM TRACTORS SPECIFICATIONS

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