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Help! Kohler is way too loud!

rvsuper

Senior Member
Location
Rock Valley, IA
I've got a 12.5 Kohler on my Exmark Metro. I just changed the oil to the Kohler Command oil yesterday and ran it, after searching on here, but there was no difference in the loud ticking. Is there anything else that can be done besides taking the head off and replacing the lifters?
 
OP
rvsuper

rvsuper

Senior Member
Location
Rock Valley, IA
I searched the forums and I found that either Sea Foam or Marvel Mystery Oil works. How much Mystery oil should I add to the crankcase and how long should I run it to get it circulated?

Thanks.
 

taylob

LawnSite Member
Location
Texas
I read in Kohlers update book that they have a new push rods they helps eliminate clattering on some engines. They are solid now so the oil pummped through them doesn't move to fast for the lifters to pump up. The part number for the pushrods are 12-411-04-s and can be purchased through your local Kohler dealer. Also, be sure to roll engine so that each valve is open for a few minutes to bleed air out of lifter before starting. You could bend a pushrod if you don't. When you loosen up the rocker-arms to install the pushrods, it allows the lifters to expand and draw in air. Since engine is not running and keeping the lifters pumped up you need to do this before starting. And finally please use a 10W-30 motor oil kohler specifies this.
 
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