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John Deere LA120 Maintenance
The
John Deere LA120 lawn tractor was manufactured from 2007 to 2009. The John Deere
LA120 driveline consists of Briggs and Stratton 441677 4-cycle V-twin cylinder
OHV vertical-shaft air-cooled gasoline engine and Tuff Torq T40 belt-driven
hydrostatic transmission with infinite forward and reverse gears.
A 44.2 cu.in (724 cc) engine has a cylinder bore of 3.12" (79 mm),
piston stroke of 2.89" (73 mm), and rated power of 21 hp (15.7 kW). Max.
forward speed - 5.5 mph (8.8 kph), maximum reverse speed - 3.2 mph (5.1
kph).
The tractor was equipped with a manual steering system, disc brakes,
15x6.00-6 front tires, and 20x10.00-8 rear tires. The wheel base is 49
in (1240 mm). The John Deere LA120 is compatible with a 42" mid-mount
2-blade mower deck with cutting height of 1.0-4.0" (25-102 mm) and
mechanical lifting system.
| Engine oil capacity, qts (L) |
2.0 (1.9) |
| Transmission fluid capacity, qts (L) |
2.45 (2.3) |
| Fuel tank capacity, gal (L) |
3.0 (11.5) |
| Recommended Oil and Fluid |
| Engine oil type |
Turf-Gard, Plus-4, SAE 10W-30, 10W-40, 5W-30. API Service category CH or higher |
| Transmission fluid type |
SAE 10W-30, 5W-50 Synthetic Oil |
| 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 |
| Engine oil filter part number |
AM125424 |
| Engine fuel filter part number |
AM116304 |
| Engine air filter part number |
LG499486S/GY20575, LG273638S (Pre-Cleaner) |
| Spark plug part number |
M78543 |
| Mower blade part number |
GX22151 |
| Traction drive belt part number |
GX20006 |
| Mower drive belt part number |
GX20072 |
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| Lawn and Garden Tractors Technical Specs |
