Fuel Gas Tank Gasket Fits Mcculloch 55 700 555 Pro Mac 10-10, 805, 850, 700, 1-10, 2-10, 3-10, 4-10, 5-10, 6-10, 7-10, 8-10, Made Of Viton Material, Which Is A Higher Quality Gasket Material Than Standard Rubber. Fuel Resistance To Ethanol Fuel And A Better Seal Then The Cork Gasket That Mcculloch Used.
- CLEAN BOTH FACES BACK TO BARE METAL - Old gasket material left in a corner is a leak before the engine has run. A straight edge across the sealing face tells you whether it is flat; a warped face needs attention, not a thicker gasket.
- FIT IT DRY UNLESS THE MANUAL SAYS OTHERWISE - A smear of sealant on a gasket designed to seal on its own is the commonest way to make a good one weep. Follow the torque figure and the tightening sequence in the service manual for your engine.
- Ethanol Resistant Viton rubber replaces the original cork gasket.
- FIND OUT WHAT MADE THE OLD ONE FAIL - A gasket does not go on its own. A loose or stretched fastener, a warped face, or an engine that has been run hot will take the new one too. Check before you close it up.
- DO THE REST WHILE IT IS APART - The seals and O-rings in the same job cost very little next to pulling the engine down twice. They are the parts most often reused and the ones most likely to be the actual leak.