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kohler 16 hp magnum

Discussion in 'Mechanic and Repair' started by arcticzl, May 3, 2004.

  1. arcticzl

    arcticzl LawnSite Member
    Messages: 30

    help please ,om my ariens ht16 my motor kohler magnum twin vert. 16 hp.there is a ticking on 1 of my cylinders .i was told it was the valve seat that came loose. i was told that these cant be peplaced and i need a new motor.... is this true? the mech. didnt look at my machine he is going by what i told him.that 1 cylender the plug has more carbon than the other and ticks.:(
  2. AirCooled

    AirCooled LawnSite Member
    Messages: 30

    Before you panic, find the cause of the tick. Ticking can be caused by any number of things including a worn valve guide. Remove the head and check the seats and guides. With the head off you can rotate the engine till the valve opens. If you can move the valve back and forth too much, the guide is shot. In a worst case you will only need a new cylinder rather than engine. Replacement seats are available and are slightly larger than the original. If the pocket is in good shape you can simply install a new seat. Guides are replaceable as well.
    Sometimes guides just wear out but seats don't usually come out unless the engine is overheated. When you remove the shrouds, check for packed in debris around the cooling fins.
  3. ducky1

    ducky1 LawnSite Senior Member
    Messages: 252

    Could be just carbon deposites on piston and head too.
  4. arcticzl

    arcticzl LawnSite Member
    Messages: 30

    i did run some carbon deposit cleaner in it do to the fact that this mower hasn't been run in years and it did clean up the carbon issue,but i still here a slight ticking.are these valves adjustable?
  5. AirCooled

    AirCooled LawnSite Member
    Messages: 30

    The tappet clearance can be adjusted but I suggest taking it to someone that has a "Soiux" valve grinder on equivilant. Its not something that can be done with a couple wrenches and a feeler gage.

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