Specifications, Service and Repair of Farm and Lawn Tractors

John Deere LA105 Lawn Tractor Specs

John Deere LA105 Engine Specifications

Engine Make - Briggs & Stratton
Engine Model - Briggs & Stratton 31
Cylinders - Single
Engine Power, Rated - 12.7 kW (17 hp)
Maximum Engine Power, (kW) - 12.7
Displacement, cu in (L) - 500 cc (30.5 cu.in.)
Engine Bore - 90.68 mm (3.57 in.)
Engine Stroke - 77.72 mm (3.06 in.)
Fuel Tank - 7.9 L (2.1 gal)
Crankcase without oil filter - 1.4 L (1.5 qt)
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.)
Regular Grade 87 Octane Unleaded Fuel
Ethanol Blended Fuel (Up to 10%)
MTBE Reformulated Fuel (Up to 15%)
Spark Plug-Gap - 0.76 mm (0.030 in.)
Spark Plug-Torque - 20 Nm (15 lb-ft)
Oil Filter - Yes
Air Filter - Paper with Foam
Charging System - Regulated Circuit
Charging System Capacity - 9 Amp
Electrical System Rating, Volts - 12
Battery Type - BCI Group U1

JD LA105 Transmission

Transmission Gear - Transaxle
Transaxle - Dana 4360
Gears - 5 Forward and 1 Reverse
Travel Speeds - 5

Gear Speed Range

1st - 2.4 km/h (1.5 mph)
2nd - 3.2 km/h (2.0 mph)
3rd - 5.0 km/h (3.1 mph)
4th - 6.4 km/h (4.0 mph)
5th - 8.0 km/h (5.0 mph)
Reverse - 3.7 km/h (2.3 mph)

Wheels

Drive Wheels - 4x2, 2WD
Steering Configuration - Manual

John Deere LA105 Mower Deck

Cutting Width - 1371 mm (54 in.)
Blades Rotary - 3
Blade Nut Torque (w/ 5/8 in. Nut) - 88 Nm (65 lb-ft)
Cutting Height (Approximately) - 25 - 102 mm (1 - 4 in.)

Tire Size

Front Tire Size, 2WD - 15 x 6.00 - 6
Rear Tire Size - 20 x 8.0 - 8
Tire Pressure (Front) - 97 kPa (14 psi)
Tire Pressure (Rear) - 69 kPa (10 psi)

JD LA105 Dimensions and Weight

Height - 108 cm (42.5 in.)
Length (Overall) - 175 cm (69 in.)
Width (Mower Deck Chute Down) - 131 cm (51.75 in.)
Weight - 200 kg (442 lb)

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