Kohler K-321AQS ?'s

[oneharvester]

hello guy's

I have some questions for you
today I pulled the head on my 1450 , thinking the head gasket was bad .
when I was taking the head off I found the bolts (5 out of nine ) was pretty loose ! when I opened it up I found the cyl bore had an egg shape on one side. so I guess it will need rebuilt. first question is ,on the piston it is stamped ( SID) is this standard inside dia??

also what is a ballpark figure for a rebuild for a kohler k321?

a local small engine shop has a k321 that has been rebuilt sitting in his shop and is asking $350 for it . I don't know to what extent the rebuild is but looking on ebay at used stuff it sounds pretty cheap!

surprisingly my tractor starts and runs good at idle , but from half to full throttle it starts missing and laboring ... is this because carb is out of adjustment or is it because it loses compression ?

guys, I don't know much about these small engines so any in put is welcome
thanks
mike

[dvogtvpe]

if 5 bolts were loose you had a leaking head gasket, sounds like your bore is worn out, there could be carb issues or ignition issues to. to me $350 don't sound like much of a rebuild, if its a dealer I'd expect the price to be in the 5 to 700 range depending on there labor rate for a good rebuild.

[samiam44]

Why not build it yourself?

Maybe he was quoting his labor and not parts or machining.

[oneharvester]

well I went and looked at the rebuilt engine today , and it's a k321 AS.. NOT an AQS!
too many things look different (mainly the dipstick location ) for me to pull the trigger on it !
no he wants $350 and someone else (he trusts) rebuilt it ! it has a carb (that seems to have a tight throttle shaft ),and starter .

now I'm thinking I should spend the money on rebuilding the one I have but I just don't trust myself to do it !

I don't have the tools to do the machine work either !

also is the carb the same on a k321 & k341? I have seen some for a 341 on ebay for only $53 .
are there good and bad (cheap) carbs ? I want to save some money but don't want junk!


thanks
mike

[dvogtvpe]

a 14 use's a #30 15/16 venturi a 16 use's a #30 1 in venturi . you can get throttle shaft kits and rebuild kits for them.

[Alvy]

Originally Posted by oneharvester

I don't have the tools to do the machine work either !

There are very few people that have the tools needed for machine work but if you find a good machine shop near you they can measure everything when you get it apart. Look in resources and you will find the Kohler k series rebuild manual with everything you need information wise. Its a good feeling to do it yourself and I'm sure the machine shop will advise you as well as many people here in reference to putting it back together.

[oneharvester]

ok ,thanks for the vote of confidence! I will consider doing it myself this winter
thanks
mike

[samiam44]

We'll be happy to give advice as/if you have questions along the way.

Depending on where you are in Kansas- maybe there is a list member whom might help.

Take it slow, print out the manual and read it a few times- disassembly and assembly. Nothing needs to be forced..