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#1
06-29-2026, 06:29 PM
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Re-torquing QL head bolts
I got a Quiet Line 1200 that I went to mow with this morning, got about 10 feet, ka-pow & died. I was pretty sure it was the head gasket and tore into it immediately.
Now if your familiar with Quiet Lines you know that everything fits together like a jigsaw puzzle, i.e. can't remove the head without removing the tin shroud covering the head, can't remove the tin shroud without removing the gas tank & brackets, can't remove the tin shroud without removing the aluminum and tin heat box parts, can't remove the aluminum heat box part without removing the muffler, removing all of the above is a lot easier if the hood and grill are removed. So when I got all that removed I found one head bolt completely backed out and all the others were barely past finger tight, and yes the head gasket was history. Now I rebuilt this engine 10 plus years ago so I know that the head gasket was new and the bolts torqued to specks. However, because of what it takes to even see the head bolts, as described above, I never re-torqued them. I know everyone advocates a heat cycle or two and then re-torquing the head bolts, but you gotta tear half the tractor apart to begin with, then put it all back together just to even start it, then tear it all down again to re-torque. Do any QL gurus out there have any tips or tricks that make the process more manageable? 
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