142001-3 supersedes older part numbers: 158942-3, 158435-0
Original Makita 142001-3 — Oil Pump Complete — a genuine Makita replacement oil-pump assembly designed for the automatic chain-oiling system on compatible corded electric chainsaws.
Examples of models this part is listed to fit include UC3020A, UC3520A and UC4020A (appears as the oil pump assembly in Makita parts diagrams and spare-parts listings for those models).
Install this complete pump to restore the tool’s automatic chain oiler (the UC-series tools use an automatic oiling system and the chain-oil tank capacity is shown as 200 ml for these models).
The 142001-3 is supplied as the pump assembly referenced in Makita’s parts breakdowns (replace the failed pump to stop under-oiling and reduce chain wear). This original Makita unit is the straightforward power tool parts replacement to get the oiling system functioning again.
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