Model #42A707-1299 Briggs & Stratton engine

  • Engine Sump Assembly
    3 Results
  • Carburetor And Flywheel Assembly
    3 Results
  • Starter Motor
    3 Results
  • Engine Assembly
    3 Results

Question and Answers

Q:

I have a Sears tractor, Model #917275400. The engine # 31H777-0297-E1. The piston rods are blown.

A:

Thank you for your question.

I am sorry you are having a problem with the engine. The engine you are wanting to install will mount to the tractor but you will have to purchase a new muffler and rig up a new throttle cable. The original cable will not reach the new engines connection. The wiring will have to be spliced also. If you do not feel confident in your mechanical ability to complete the engine swap, I recommend staying with direct replacement engine.

I hope this helpful.

If you need further assistance, please reply below.

Thank you for using Manage my life.

Mark T.

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Mark T -
Sears Technician
August 09, 2011
A:

I have checked and can confirm that the single cylinder has a 1 inch x 3 5/32 inch. I have looked for the dimensions for the twin but could not find them posted. I recommend measuring the shaft on the twin before attempting the swap. If the shaft is not the same, you could have a hard time finding the correct pulleys.

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Mark T -
Sears Technician
August 11, 2011
A:

The starters on these two engines are not interchangeable. I strongly recommend replacing the defective engine with the recommended replacement. The replacement engine will fit your tractor with out modifying. The engine can be ordered from the link below.

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Mark T -
Sears Technician
August 14, 2011
See more answers
Q:

riding mower will turn but wo'nt start changed spark pluges

A:

Thank you for your question.

I am sorry you are having a problem with the tractor.

There are three basics the engine needs: Ignition, Compression, and Fuel. The specifics can vary from model to model, and your Manage My Home profile did not list what model this might be, but there are some quick checks you can do to see if you have these three basics. I am assuming from your question that this is a engine with a good battery and that it is just turning over and not firing at all, but even if that is not the case these basic checks can still help narrow down the source of the problem. First, go back to the spark plug. Remove the leads, or wires, that connect from the engine to the plug. Remove the plug and put them back in the leads. Now position the leads so the metal end of the plug is against the engine or another clean unpainted metal ground point. Keep your hands away from the plugs so you do not get shocked, and turn the key to the start position. Look for sparks at the ends of the Spark Plug. Look carefully as they might be hard to see in sunlight or other bright lights. If there is spark there then you have ignition, the first of the three basics. If not, you likely have an electrical problem that needs to be traced. The engine should have been spinning over faster once the plug was removed and you should hear air rushing out of the spark plug holes in puffs. You could even try putting a thumb or finger over each plughole to see if the pressure pushes your finger off when turning over, just be careful not to touch the grounded plugs so you do not get shocked. If that all happens then you have the second ingredient, compression. If not then you may need a valve adjustment or may have a broken component inside the engine. That leaves fuel. Check the tips of the plug you just removed, if fuel is reaching the engine there should be some residue there and they should look somewhat wet. If you used your finger to check compression then you may even see some residue on your finger. If there is fuel here, your problem may be old fuel or a timing issue. Try putting a small amount of good fuel into the throat of the carburetor and turn the key to start. If your problem is fuel related only, the engine should now try to start, or even run, until the fuel you put in is gone. That would indicate the fuel supply is being stopped in the fuel tank, fuel line, fuel filter, fuel pump, or carburetor. Some carburetors have a solenoid to stop the fuel supply when the key is off and a malfunction there could also be the problem. I hope this is helpful.

If you need further assistance, please reply with a model number and more details.

Here is a link to order any parts you need. Sears Parts Direct .

If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website: Sears Home Services .

Thank you for using Manage my life.

Mark T.

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Mark T -
Sears Technician
September 06, 2011
Q:

not getting fuel 42A707-1624-01 Briggs&stratton Engines

A:

Thank you for your question.

I am sorry you are having a problem with the engine. I will be happy to assist you. I recommend checking the fuel supply first. To do that you need to remove the fuel line from the pump. Then remove the line from any clamps on the engine. Once you have it loose lower the end of the hose into an approved container. If everything up to that point is ok, you should have a good flow of fuel out the end of the hose. If you don’t the problem could be a plugged fuel filter, plugged fuel cap vent, or the outlet in the tank is plugged. If you have a good flow out of the fuel line the problem is either in the carburetor or the pulse line between the carburetor and engine is leaking. To verify the pulse line is fine just inspect it. The line should not have any cracks and should have a tight fit on each end. If the pulse line is fine, I recommend rebuilding the pump. The pump kit can be ordered from the following link. Replacement fuel pump kit for engine number 42A707-1624-01.

 

If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a  Sears technician.  Here is a link for the website:  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
September 23, 2013