- Feb 1, 2019
- South Carolina
I've found all sorts of washers in there in my neck of the woods. I inquired about this practice in the old saw shops that had McCulloch repairs and they were all under the impression that if you didnt install some sort of washer in there after a tank gasket replacement then you could warp the tank and cause it to leak at the seam.I do have a few 69772 on hand, I'll try to remember to look on Wednesday when I am back in the shop to confirm the thickness. In taking saws apart I have found no washers, fiber washers, steel washers, and fiberglass reinforced polyester washers used between the oil tank and the fuel tank.
The insulator between the fuel tank/airbox and the cylinder is thinner on the 70 cc saws and thicker on the 54/57/60 cc models and pretty well accounts for the spacing between the fuel tank and oil tank so that spacer up front doesn't seem to be a big factor in the way the saws go together or perform in the long run.
Many saws also have/had a fiber insulating washer between the shroud and the airbox (68581), many saws are missing this one as well. I have a few of these also, again I will try to remember and measure the thickness of those too.
Ofcourse this was caused by the srinking cork gasket or a ham fisted tech over torquing everything, but its still reguarded as common practice around here.