Repairs 1999 Sears Riding Mower 15.5 HP Turbo Cool - 917.256524

[sillyboy]

Hi all!

I noticed today when cutting grass that the mower is smoking when going uphill (motor laboring). I finished the cutting and checked the oil level. It was low. I added oil to the ADD on the dipstick. I only add oil (30W) to the add mark because if I add more to where is is full, I will put out a smoke screen that the Navy Seals would be proud of :laughingdoes this happen to any one else?).

I opened the air cleaner, and under the actual air filter (air intake) it is filled with oil coming from the breather hose.

What can be done with this problem??

Thanks for any help

 

[ILENGINE]

If this is overhead valve I would say that you have a blown head gasket. It will be blown between the cylinder and the push rod cavity

 

[sillyboy]

If this is overhead valve I would say that you have a blown head gasket. It will be blown between the cylinder and the push rod cavity

Thanks ILENGINE!

It is an overhead valve. Is this a fix I can do, being it's an OH valve? Is there a flaw in the engineering, or is just a normal thing that happens over time?

Thanks again...

 

[ILENGINE]

It is not overly common but have seen several come through the shop over last several years. Even did one on my own 94 craftsman about 8 years ago. I think it is do to the fact that is the thin area in the head gasket area and is subjected to the most ignition pressure. Will need to remove the intake manifold, blower housing, exhaust and the valve cover to get to all the head bolts, including the one hiding behind the spark plug. Torque the head bolts back to spec after replacing and adjust the valves to .004-.006 with the piston at 1/4 inch past top dead center compression stroke when done and you should be good.

 

[sillyboy]

It is not overly common but have seen several come through the shop over last several years. Even did one on my own 94 craftsman about 8 years ago. I think it is do to the fact that is the thin area in the head gasket area and is subjected to the most ignition pressure. Will need to remove the intake manifold, blower housing, exhaust and the valve cover to get to all the head bolts, including the one hiding behind the spark plug. Torque the head bolts back to spec after replacing and adjust the valves to .004-.006 with the piston at 1/4 inch past top dead center compression stroke when done and you should be good.

Thank You ILENGINE

 

[redfish9]

cranckcase breather valve needs replacing,my John Deere just did the very same thing and i could have bet it was the head gasket

 

[wjjones]

If this is overhead valve I would say that you have a blown head gasket. It will be blown between the cylinder and the push rod cavity

:thumbsup:....Yep..