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Home / Lawn and Garden Tractors / John Deere Lawn Tractors / John Deere E120

John Deere E120 Maintenance

The John Deere E120 lawn tractor was manufactured between 2018 and 2020. The John Deere E120 powertrain system components: a 40.1 (656 cc) Briggs and Stratton 40N877 Intek IC 4-cycle V-twin cylinder OHV air-cooled gasoline engine with a rated power of 20 hp (14.8 kW), and belt-driven hydrostatic transmission with infinite forward and reverse gears.

The engine has a float-feed carburetor, integral type fuel pump, full pressure lubrication system with spin-on oil filter, and forced air cooling system. Max forward speed - 5.5 mph (8.8 kph), maximum reverse speed - 3.2 mph (5.1 kph).

The lawn tractor is equipped with a manual steering system, wet disc brakes, 15x6.00-6 front tires, and 20x8.00-8 rear tires. The wheelbase is 49" (1240 mm). The John Deere E120 is compatible with the following attachments: a 42" mid-mount 2-blade mower deck with cutting height of 1.0-4.0" (25-102 mm), 13 cut positions, and manual lift system, 44" front-mount 2-stage snow blower, and 46" front blade.

Refill Capacities
Engine oil capacity, qts (L) 2.0 (1.9)
Transmission fluid capacity, qts (L) 2.35 (2.2)
Fuel tank capacity, gal (L) 2.4 (9.1)

Recommended Oil and Fluid
Engine oil type Turf-Gard, Plus-4, SAE 10W-30, 10W-40, 5W-30. API Service category CJ or higher
Transmission fluid type Tuff Tech Oil, SAE 10W-30

Service Intervals
Check fuel level Every 10 hours
Check engine oil level Every 10 hours
Clean air intake screen Every 10 hours
Check tire pressure and brakes Every 10 hours
Check and tighten loose hardware Every 10 hours
Lubricate front axle pivot Every 25 hours
Lubricate front wheel spindles and wheel bushings Every 25 hours
Check transmission fluid Every 25 hours
Change engine oil Every 50 hours
Replace engine oil filter Every 50 hours
Clean air filter precleaner (if equipped) Every 50 hours
Check air filter element Every 50 hours
Clean engine cooling fins Every 50 hours
Replace fuel filter Every 50 hours
Clean spark plug Every 50 hours
Check and clean battery terminals Every 50 hours
Sharpen or replace mower blades Every 50 hours
Check and adjust mower drive belt Every 50 hours
Clean mower deck Every 50 hours
Check and level mower deck Every 50 hours
Lubricate mower pivot points Every 50 hours
Replace spark plug Every 100 hours
Charge battery Every 100 hours
Check engine idle speeds Every 100 hours
Check carburetor adjustment Every 100 hours
Replace air filter precleaner (if equipped) Every 200 hours
Replace air filter element Every 200 hours
Change transmission fluid Every 200 hours
Check and adjust valve clearance Every 200 hours

Replacement Parts
Engine oil filter part number AUC12916
Engine fuel filter part number AM116304
Engine air filter part number MIU14395
Spark plug part number UC19085, MIU11020
Mower blade part number GX22151
Traction drive belt part number GX20006
Mower drive belt part number GX20072

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