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  1. #1

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    Loctite 572 for head bolts on 760

    What do you use on cylinder to lower case bolts and cylinder head bolts? Yamaha service manual says loctite 572. What is this?


  2. #2
    Waveruiner pauladave's Avatar
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    Loctite 572 is a slow cure, low strength thread sealant for use on coarse threaded bolts. It's available on Ebay from UK but doesn't seem to be available from U.S.? Cure time isn't critical but if you choose a locally available alternative to 572, just make sure it's only low or medium strength. The high strength thread sealants can damage threads in aluminium and cast parts if you try to dis-assemble after it's cured. I know 'cos I did it years back on an outboard motor and had to helicoil the stripped out threads!
    Last edited by pauladave; 09-05-2009 at 03:15 AM. Reason: extra info

  3. #3

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    Thanks for the info. Anybody else what do you use if 572 unavailable.

  4. #4
    Permatex High performance thread sealant. Part#56521

  5. #5
    Moderator DrewNJ's Avatar
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    I use loctite blue on the cylinder to case bolts and water resistant grease on my head bolts.

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