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Valve Clearance 1982 650J

Discussion in 'XJ Technical Chat' started by MNafasto, Apr 25, 2016.

  1. MNafasto

    MNafasto New Member

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    I' getting conflicting information in regards to valve clearance

    specifically for 1982 650J

    Haynes manual states (0.006-0.008 in) for both Intake and Exhaust for 1982 650 J only while others say that

    all 650 have same values:
    Intake valve clearance (cold):0.11-0.15 mm(0.004 ~ 0.006in)
    Exhaust valve clearance (cold):0.16--0.20 mm(0.006-0.008in)

    When I measured valves on my bike last night (briefly) it resembles set up:
    Intake valve clearance (cold):0.11-0.15 mm(0.004 ~ 0.006in)
    Exhaust valve clearance (cold):0.16--0.20 mm(0.006-0.008in)

    What is correct valve spec specifically for 1982 650j maxim?
     
  2. XJ550H

    XJ550H Well-Known Member Premium Member

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    haynes is wrong

    all 650 have same values:
    Intake valve clearance (cold):0.11-0.15 mm(0.004 ~ 0.006in)
    Exhaust valve clearance (cold):0.16--0.20 mm(0.006-0.008in)
    is correct
     
  3. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The left sidecover has a sticker. That is the correct value.

    Intake valve clearance (cold):0.11-0.15 mm(0.004 ~ 0.006in)
    Exhaust valve clearance (cold):0.16--0.20 mm(0.006-0.008in)

    Airhead Valve Adjustment
     
  4. XJ550H

    XJ550H Well-Known Member Premium Member

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  5. MNafasto

    MNafasto New Member

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    upload_2016-4-26_18-19-36.png
    this is the part from "Haynes" that got me confused.
     
  6. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Ya. It's a 30 year-old editing error that is in all of the manuals (Clymer and Yamaha too) and will never be fixed.
    The shim table for the xj650J is wrong too,
     
    Lightcs1776 likes this.
  7. rocs82650

    rocs82650 Well-Known Member

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    +1. Haynes also has the air jets below the diaphragms incorrectly labeled.

    Gary H.
     
  8. MNafasto

    MNafasto New Member

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    Thanks guys!
     

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