• Gasoline chainsaw oil pump Oleo-Mac 937 / 941 / 952

  • This Oleo-Mac gasoline chainsaw oil pump – an aftermarket part compatible with Oleo-Mac 937, 941, 947, 952 and GS 520 family chain saws.

    In these models Oleo-Mac used two similar oil pump versions. This replacement pump fits models that use the original part numbers 50180007BR and 50170051BR.

    Fits Oleo-Mac Chainsaws

    Oleo-Mac 937
    Oleo-Mac 941 C
    Oleo-Mac 941 CX
    Oleo-Mac 947
    Oleo-Mac 952
    Oleo-Mac GS 520

    50180007BR tipo siurblys taip pat naudojamas:

    Oleo-Mac GS 37
    Oleo-Mac GS 370
    Oleo-Mac GS 371
    Oleo-Mac GS 410 C

    50170051BR tipo siurblys taip pat naudojamas:

    Oleo-Mac 940 C
    Oleo-Mac GS 41
    Oleo-Mac GS 410 CX
    Oleo-Mac GS 411
    Oleo-Mac GS 44
    Oleo-Mac GS 440
    Oleo-Mac GS 45
    Oleo-Mac GS 451

    Original Part Numbers

    50180007BR
    50180007AR
    50170051BR

    Oleo-Mac 937 and 941 C use the 50180007 series pump. Oleo-Mac 941 CX, 947, 952 and GS 520 use the 50170051 series pump.

    Therefore, when checking an older saw it's worth looking not only at the model but also at the design of the old pump and the original part number.

    Function of the Oil Pump

    The oil pump supplies chain oil from the tank to the guide bar during operation. Proper lubrication is necessary for the chain, the bar and the drive sprocket.

    When the pump is worn, it may:

    Oil may no longer reach the guide bar
    Lubrication may become uneven
    Chain and bar may wear faster
    The cutting mechanism may overheat
    Oil leaks may appear around the pump

    Before replacing the pump also check the oil filter, hose, lubrication channels and the pump drive. A clogged oil channel can create the impression that the pump itself is faulty.

    Installation

    Before installation thoroughly clean the pump area of sawdust and dirt. Also check the drive mechanism and the oil hose.

    After reassembling the saw fill it with chain oil and check the lubrication. A working pump should supply oil to the guide bar channel, and when the chain is rotated you should see normal oil delivery.

    You can find more suitable parts in the Oleo-Mac chainsaw parts category.