no threads in Kohler SV470 engine mount holes

Discussion in 'Mechanic and Repair' started by redeye1964, Aug 17, 2013.

  1. Valk

    Valk LawnSite Silver Member
    Posts: 2,711

    Same with a new untapped spindle housing?
  2. Ormond32176

    Ormond32176 LawnSite Member
    Posts: 217

    You think it's an expensive PITA to do that on a lawn mower? I snapped one off in the cylinder head of my dirt bike...
  3. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,264

    Personally, I always tap them spindle holes. On thru- holes ( as opposed to blind holes) I use a two flute gun tap (designed for aluminum) in my cordless drill, makes quick work of it, and less chance of breaking a tap.
    But as you saw, any tap will work, as long as you take yer time.
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    You mean the cylinder head on your dirt bike wasn't already tapped and you were tapping it with a self tapping screw ???
  5. Ormond32176

    Ormond32176 LawnSite Member
    Posts: 217

    Actually, the tapping itself went smoothly (not with a screw). Looking back at it, a bolt snapped in the cylinder head (previous owner liked to over tighten things) and I went to get it out with and EZ out which broke in the bolt, in the outer cylinder wall that the head bolts go into. I then had the honor of drilling all that mess out, getting it filled, and then rethreading it.

    I misread thinking his tap broke which made me think EZ out for some reason (it's been a long week).

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