Chainsaw Repair

   Matt =

 262xp:

    oem #740482702

    https://www.ebay.com/itm/Metric-Buna-O-rings-34-65-x-1-78mm-Price-for-50-pcs/202555228953?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

    1.78mm x 34.65mm ID




    61/266/268/272xp:

    oem #740422100

    https://www.mcmaster.com/9262K668

    1.6mm x 29.1mm ID




    181/281/288:

    oem #740422400

    https://www.mcmaster.com/9262K592

    1.6mm x 37.1mm





    XRING (272/288/394 etc):

    501288501

    https://www.mcmaster.com/90025K123

    1/16 x 1/8 x 1/4





    as a bonus, I measured the 372xp o ring that goes on the PTO bushing. its about .025" x .590" ID ... somewhere in there. I can't seem to find an o ring that is that thin stocked anywhere ... anyone more info in this direction?


    as a question, the material I ordered was BUNA N ... nitrile o rings. if this is wrong material for these o rings let me know. I can't imagine it is anything else, but if someone has more info here that'd be great.

   

    x ring in viton

    https://www.mcmaster.com/6540k116

    266/272

    https://www.mcmaster.com/9263k635

    the 288 and 262 o rings do not appear to be available, the 288 due to ID, and the 262 due to o ring thickness of 1.78 not available in viton
     

288 in viton

https://www.oringsandmore.com/fkm-o-ring-37-1-x-1-6mm-minimum-2-pcs/
 



    262xp in viton

    https://www.oringsandmore.com/fkm-o-ring-34-65-x-1-78mm-minimum-10-pcs/

Matt
     
394 395 288 272 etc use an "xring" on the oiler to seal the oiler output to chassis oil inlet.

https://www.jackssmallengines.com/jacks-parts-lookup/part/husqvarna/501288501?gclid=cjwkcajw3-bzbrbheiwagnnlcvqohcxmnnk7uhj3_ysrmddt9cwykhshrqchsisbjdwob_rnvpuhbhociasqavd_bwe

Jacks has it at about 5 bux a shot. They really are pennies a piece.


288 has an o ring that seals the oiler to the crankcase at the outer race of the bearing. Same with 272.... again...o rings are saw specific and usually husky charges 4 or 5 bux a shot when they are only pennies each from a supply house.

Annoyingly....these o rings are required to be changed when doing a rebuild yet they are not included in gasket / seal kits.

Learned something today from Shawn saying cut your own.    @SquareFile   Thanks for just mentioning that.

https://youtu.be/PKG97B2EGnA

O ring store online and Viton o rings  https://www.theoringstore.com/