Genuine Makita 142857-4 — Oil Pump Complete
Restore reliable chain lubrication with this original Makita 142857-4 oil pump complete. This pre‑assembled pump unit replaces the oil‑delivery assembly that mounts to the oil tank and engages the worm‑gear / rotor drive, and the parts breakdown shows it as the complete pump assembly used in Makita’s compact cordless chainsaws.
What’s included and how it fits
- Complete oil pump assembly (ready to drop into the oil tank cavity) that mates with the saw’s worm gear and rotor.
- Associated sealing and return components shown in the parts diagram include an O‑ring (listed as O‑RING 25) and a small compression spring (compression spring 4) that are part of the same oil system.
Example compatible models
- DUC254 (250 mm top‑handle cordless chainsaw).
- Selected 40Vmax XGT models UC011G , UC014G , UC015G and UC016G.
Why this part
- Direct, original Makita replacement designed to restore correct oil flow and pump engagement with the drive components inside the housing — a straightforward swap when the pump has failed, leaked, or lost prime. Makita parts are built to the original fit and tolerances used in the tool’s factory assembly.
If your chainsaw’s parts diagram list's 142857-4 as the oil pump, this is the matching genuine Makita replacement shown there.
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