John Deere D120 Lawn Tractor Maintenance Guide
Common sense goes a long ways when maintaining your machine. If you have extreme heat, dust, or terrain that you operate in you, service frequency will need to increase.
Service Schedule Parts for a John Deere D120 Lawn Tractor
While your John Deere machine is certainly built with quality parts, they have a limited life. Good news is you can easily service your machine yourself using a John Deere maintenance kit or service kits or by getting the specific John Deere part needed to keep your John Deere mower or tractor running for a long time. These are the parts on your John Deere D120 Lawn Tractor that need to be regularly serviced.
| Part | Hour Interval | Price | |
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| 5 – Fuel Filter-In-Line AM116304 | Every 50/100/150/200/250 |
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| 6 – Engine Oil Filter AM125424 | Every 8/50/100/150/200/250 |
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| 5 – Spark Plug M78543 | Every 50/100/150/200/250 |
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| 5 – Spark Plug MIU11020 | Every 50/100/150/200/250 |
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| 5 – Air Filter-Cartridge MIU11511 | Every 50/100/150/200/250 |
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| 1 – 2.5 gal Engine Oil Turf-Gard 10W30 (For 42" Deck) TY22076 | Every 8/50/100/150/200/250 |
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| 2 – JD Multi Purpose SD Polyurea Grease TY6341 | As Needed |
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Commonly Used Parts for a John Deere D120 Lawn Tractor
Outside of the schedule service intervals, you may need a part for a quick repair. While this is not an inclusive list of all the parts for a John Deere D120 Lawn Tractor, these are the typical parts that we see purchased for your model.
| Part | Price | |
|---|---|---|
| Headlight Bulb AD2062R |
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| Kit-Mulching 42" AM141033 |
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| Kit-Bagging 42" AM141034 |
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| Gage Wheel GX10168 |
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| Belt-Traction Drive GX20006 |
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| Belt-Mower GX20072 |
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| 3N1 Blade 42" GX22151 |
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| Fuel Cap GX22166 |
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| Fuel Cap GX23465 |
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| Ignition Switch GY20074 |
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| Key GY20680 |
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| Kit-Blade 42" GY20850 |
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| Air Filter-Pre Cleaner MIU11513 |
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| Battery (For 42" Deck) TY25878 |
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As Needed Parts for a John Deere D120 Lawn Tractor
Regardless of your John Deere model, these John Deere parts are used frequently in maintaining and your John Deere D120 Lawn Tractor and can be used around your garage.
| Part | Price | |
|---|---|---|
| Mower Deck Leveling Gauge AM130907 |
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| Grease Gun (For 42" Deck) TY26518 |
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