Model #CV730-0041 Kohler engine

  • Cylnder Head/valve/breather
    3 Results
  • Exhaust
    3 Results
  • Ignition/electrical
    3 Results
  • Blower Housing/baffles
    3 Results
  • Fuel System
    3 Results
  • Air Intake
    3 Results
  • Oil, Pan/lubrication
    3 Results
  • Starting System
    3 Results
  • Engine Controls
    3 Results
  • Crankcase
    3 Results
  • Crankshaft
    3 Results

Question and Answers

Q:

Craftsmans garden tractor 917.276022 with Kohler engine CV730 constantly has fouled plugs

A:

Thank you for your question.

 

I am sorry you are having a problem with the tractor engine. That is strange for the rings in this engine to wear that fast. The most common failure we have seen on this style engine is the head gaskets blow. The gasket usually fails between the push rod area and the cylinder. When this happens, the engine loses power and fouls plugs. To diagnose this problem you will need to have a leak down tester. What it does is pressurize the cylinder and shows how much it is leaking. If you do not have a leak tester, I recommend having a service technician come out and do the test. I would hate to see you pay for a new engine if it is not needed. I suspect that when the engine was rebuilt they may not have used new head bolts when they reinstalled the head. If they did not use new bolts, the gasket would blow prematurely.

you can have it repaired by a Sears  technician.  Here is a link that will provide the nearest drop-off locations: Sears Home Services.

 

I hope this is helpful. Please let me know if you need further assistance.

 

Thank you for using Manage my life.

Mark T.

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Mark T -
Sears Technician
October 28, 2013
A:

Thank you for posting the pictures. I think the head gasket was leaking between the cylinder and the push rod area for the exhaust valve. In one image it looks like the gasket is cracked and the head looked like it is wet from oil. In another image with the gasket off, it looks like the head is wet with oil a crossed that area. I posted the images I am referring too. I marked the area where I suspect the problem is. I recommend cleaning the head with carburetor cleaner and a scotch brite pad. It is going to take a while but it should come clean. Once it is cleaned, reassemble the engine with a new gasket and bolts. Then install a new plug and check the operation. Please let me know how the repair goes. Thank you for using Manage my life. Mark.

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Mark T -
Sears Technician
November 02, 2013
A:

Ron, The cylinder walls look good. I do not see any grooves or major wear areas. You can clean the top of the piston by turning the crankshaft so the piston is all the way up. Then use the carburetor cleaner and scotch brite pad. Once you have the piston cleaned, be sure to flush out any carbon that gets between the piston and cylinder wall. The change the oil before you fire the engine up after the repair.

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Mark T -
Sears Technician
November 02, 2013
A:

I looked at the set of images you posted. It looks better than the other side. I recommend cleaning the carbon off the top of this piston also. To be sure there is not another problem I recommend inspecting the inside of the air filter. If the inside of the filter looks like it has oil on it I would recommend replacing the breather on the valve cover alone with the flapper valve between the lifters. If the air filter is fine, I think you will be fine with reworking the heads and replacing the head gaskets.

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Mark T -
Sears Technician
November 05, 2013
See more answers
Q:

What is torque spec for rocker arm on V-twin-Kohler engine CV730 for a Craftsman tractor model 917276380?

A:

Torque the rocker arm bolt to 100 inch/lbs.

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Jimmy K -
Sears Technician
May 27, 2009
Q:

when connecting the solenoid to the starter does the top of the solenoid push up on the white piece or does it go above the white piece? model number CV730 type number 0017

A:

Thank you for your question.

 

I am sorry you are having a problem with the tractor. I will be happy to assist you. The plunger has a notch that the lever fits on. When you energize the solenoid, it pulls the plunger down. This caused the gear to engage the ring gear on the flywheel. It also closes the contacts to run the starter motor. I posted an image below that shows the parts of the starter. Click on the image to enlarge it. I find it easier to connect the plunger if I pull the gear up. This will lower the lever and make it easier to connect the plunger.

I hope this is helpful. Please let me know if you need further assistance.  

 

Thank you for using Manage my life.

 

Mark T.

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Mark T -
Sears Technician
September 23, 2013