To rebuild an engine the right way you will need a
gasket kit
piston and rings
governor-if it is a plastic one
connecting rod-need to measure the crank journal-sometimes the crank journal needs turn .010 under stock spec.
points pushrod
I will replace the head bolts, bearing plate bolts and oil pan bolts.
I would check the valves-they may need ground or replaced
part number for piston-I give the place where I order my parts (small motor shop) the model-spec and serial number. He orders the parts for me. Sometimes I'm asked if I want Kohler or Stens parts. I only use Kohler connecting rods. I had problems with Stens in the past
The following part(s) are replaced when I rebuild a Kohler motor:
1. piston
2. connecting rod
3. governor gear (plastic version)
4. points push rod (aluminum version)
5. head bolts
6. bearing plate bolts
7. oil pan bolts
8. gaskets
9. crank seals
10. grind valves-replace as needed
11. check valve guides-replace as needed
12 check cam lobe that the points push rod rides on-sometimes the push rod will wear a groove in the lobe.
If your Kohler motor has balance gears-throw them in the trash can. I don't reinstall them.
Any motor that needs more than a .030 oversize piston gets sleeved.
The block is cleaned in my parts washer and them cleaned with soap and water in the sink in my garage. I use an assembly lube when I reassemble a motor. Lube is applied to crank journal, cam and crank bearings. All threads are tap before the motor is put together.
The $80 epay specials aren't the best quality. I use only Kohler parts on my own motors and prefer to use Kohler parts on any customer's motor. Kohler parts are a little more expensive...worth it in my book.
I have a few motors that just had a "hone and new rings" special done to them before I work on them. You may get a few years life out of that. Most times the piston is burnt in the exhaust valve area.
Cost (local automotive machine shop):
bore cylinder-$45
resurface head (labor)-$10
Repair and Replace valve guide (labor)-$32
I charge a flat price of $175 to rebuild a Kohler engine.
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