We have lots of pioneer chainsaw parts. Especially for older models. Lots of used pioneer chainsaw parts on hand. We have some NOS pioneer chainsaw parts.

pioneer farmsaw, p41, p50, p51 chainsaw chain tensioner adjuster
Part: chain tensioner screw and bar adjusting nut/pin Part # 429638 and 425672 Condition: good used/working shape Fits: Pioneer Farm saw, P-41, P-50, P-51 and some other models

pioneer p20 to p28 series chainsaw chain tensioner adjuster
Part: chain tensioning screw with bar adjusting pin Condition: good used/working shape Fits: Pioneer P20, P21, P25, P26, P28, 1074

pioneer 1200 chainsaw bar chain tensioner adjuster
Part: tensioning screw and adjusting nut Condition: good used/working shape Fits: Pioneer 1200

pioneer super 2400 chainsaw bar chain tensioner adjuster
Part: chain tensioning screw and bar adjusting nut Condition: good used/working shape Fits: Pioneer Super 2400

Pioneer 1100 Bar/Chain Tensioner/Adjuster
Part: chain tensioning screw and bar adjusting nut Condition: good used/working shape Fits: Pioneer 1100

Pioneer 2270 Bar Chain Tensioner Adjuster
Part: chain tensioning sccrew and bar adjusting nut Condition: good used/working shape Fits: Pioneer 2270

pioneer p51, p50, p40 chainsaw bar adjusting nut
Part: adjuster nut / pin for the tensioner Part # 425672 Condition: good used/working shape Fits: Pioneer P-41, P-50, P-51 and some other models

pioneer 3071 chainsaw bar chain tensioner
Part: chain tensioning screw and bar adjusting nut Condition: good used/working shape Fits: Pioneer 3071