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Home / Lawn and Garden Tractors / John Deere Lawn Tractors / John Deere LA105

John Deere LA105 Lawn Tractor

The John Deere LA105 lawn tractor was manufactured from 2008 to 2010. The JD LA105 driveline consists of a Briggs and Stratton 31P677 4-cycle single cylinder OHV vertical shaft air-cooled gasoline engine and Dana 4360 belt-driven gear transmission with 5 forward and 1 reverse gears.

A 30.6 cu.in (501 cc) engine has a cylinder bore of 3.56" (91 mm), piston stroke of 3.06" (78 mm), and rated power of 19.5 hp (14.5 kW). Max. forward speed - 5 mph (8 km/h), maximum reverse speed - 2.3 mph (3.7 km/h).

The lawn tractor is equipped with a manual steering system, disc brakes, 15x6.00-6 front tires, and 20x8.00-8 rear tires. The wheelbase is 49" (1240 mm). The John Deere LA105 is compatible with a 42" mid-mount 2-blade mower deck with cutting height of 1-4" (25-102 mm), 44" front-mount 2-stage snowblower with clearing height of 18" (450 mm), and 46" front blade with manual lifting system.

Engine
Engine Model Briggs and Stratton 31P677
Engine Type 4-cycle single cylinder OHV vertical shaft air-cooled gasoline engine
Number of Cylinders 1
Displacement, cu.in (cc) 30.6 (501)
Cylinder Bore, in (mm) 3.56 (91.0)
Piston Stroke, in (mm) 3.06 (78.0)
Rated Engine Power, hp (kW) 19.5 (14.5)
Rated Engine Speed, rpm 3600
Idle Speed, rpm 1750
Cylinder Bore Type Cast iron sleeve
Fuel System Type Carburetor
Carburetor Type Float
Fuel Pump Pulse type
Governor Type Mechanical
Lubrication System Oil pump with filter
Air Cleaner Dual element (paper and foam)
Cooling System Forced air
Ignition System Electronic
Spark Plug Type Champion RC12YC
Spark Plug Gap, in (mm) 0.03 (0.76)
Armature Air Gap, in (mm) 0.010-0.014 (0.25-0.36)
Valve Clearance (Intake), in (mm) 0.003-0.005 (0.08-0.13)
Valve Clearance (Exhaust), in (mm) 0.005-0.007 (0.13-0.18)
Fuel Tank Capacity, gal (L) 2.1 (7.9)
Oil Capacity, qts (L) 1.51 (1.42)

Electrical System
Electrical System Rating, Volts 12
Charging System Alternator
Alternator Rating, Amps 9
Starter Type Electric
Number of Batteries 1
Electric Ground Negative

Transmission
Transmission Model Dana 4360
Transmission Type Belt-driven gear
Gearbox Type 5F/1R
Number of Forward Speeds 5
Number of Reverse Speeds 1
Maximum Forward Speed, mph (kph) 5.0 (8.0)
Maximum Reverse Speed, mph (kph) 2.3 (3.7)


Wheels and Tires
Drive Wheels 4x2 2WD
Steering Configuration Front steer
Steering System Manual
Front Tire Size 15x6.00-6
Rear Tire Size 20x8.00-8

Dimensions and Weight
Wheelbase, in (mm) 49 (1240)
Length, in (mm) 68.8 (1740)
Height, in (mm) 42.5 (1070)
Overall Width, in (mm) 51.8 (1310)
Weight, lb (kg) 442 (200)

42" Mower Deck
Mower Deck Type Mid-mount
Number of Blades 2
Cutting Width, in (mm) 42 (1060)
Overall Width, in (mm) 52 (1320)
Cutting Height, in (mm) 1.0-4.0 (25-102)
Spindle Material Aluminum
Deck Drive Belt
Lift System Mechanical

44" Snowblower
Snowblower Type Front-mount, 2-stage
Clearing Width, in (mm) 43.25 (1090)
Clearing Height, in (mm) 18 (450)
Lift System Mechanical

Front Blade
Blade Type Front-mount
Width, in (mm) 46 (1160)
Lift Height, in (mm) 6 (150)
Lift System Mechanical
Angle Manual

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