Model #7721 PORTER CABLE Saw Band

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Question and Answers

Q:

I have a governor issue on my edger model #536.7721.00

A:

Thank you for your question.

 

I am sorry you are having a problem with the edger. If the link is missing, the engine should still start but only idle. If the engine will not start, you need to determine what the engine is missing for it to run.

Please use the following information to help get this issue resolved.

 

Make sure to use fuel that is less than 5 weeks old. Gas will start to break down and become less volatile.  If the gas is old, drain the tank refill with fresh fuel. Next, check the air filter and replace it if is not dry or clean.

 

If the engine does not start, you need to determine what is causing the problem. The engine need three things to start and they are fuel compression and spark. Use the following instructions to determine what is missing.

 

The first check is going to be if the engine is getting spark. Remove the spark plug from the engine and connect it to the spark plug wire. Use a pair of insulated pliers to the base of the spark plug against a metal part of the engine. Now have someone pull the starter rope. When the engine is turning over you should see the spark plug spark. If the plug does not spark, disconnect the spark plug and insert a screwdriver into the boot of the spark plug wire. _Make sure to hold onto the handle of the screwdriver._ Hold the metal portion of the screwdriver close to a bare metal part of the engine. Now pull the starter rope again with the starter. If you see a spark, you need to replace the spark plug. If you do not see, a spark most likely the ignition coil is defective.

 

Once you have determined the engine has spark you have to check for fuel. The easiest way to check for a fuel problem is to remove the air filter and pour a teaspoon of fuel mix into the throat of the carburetor.  Then try to start the engine. If the engine acts as if it wants to start or runs for a short time and stalls the problem with the engine is a fuel issue. Most likely, the carburetor does have some build up from old gas that remained in the carburetor over the winter. You can watch THIS VIDEO to use as a reference for cleaning your carburetor. I'm not sure why the manual says not to use carb cleaner unless they're worried about plastics that may be on the carburetor. If your carburetor looks a bit different from the carburetor in the video let me know because the situation will be different.

 

 

 

If the engine did not attempt to start with pouring the gas in the carburetor, I recommend checking the compression of the engine. To check the compression, remove the spark plug and tuck the wire out of the way. Hold your finger over the spark plug hole and pull the starter rope. When the engine turns over the compression should force air past your finger. If the engine does not force air out part your finger there is an internal engine problem.

 

 

 

 

If you do not feel confident repairing this problem yourself, then 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 30, 2013
Q:

On my 536.7721.00 craftsman edger I'm trying to reattach a small bent wire that goes on the throttle mechanism running back to the two wired plastic shut off.

A:

Thank you for your question.

I am sorry you are having a problem with the engine on the edger. I will be happy to assist you with connecting the linkage on the throttle lever. I posted an image that shows how the linkage connects on a few different models. Click on the image to enlarge it. Once it opens look for the set up closest to yours. If you cannot see the image, click on the following link. On my 536.7721.00 Craftsman edger I'm trying to reattach a small bent wire that goes on the throttle mechanism running back to the two wired plastic shut off.  

 

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 25, 2013
A:

craftsman 4-cycle model # 143.993502 this is the schematic showing my problem part its part #207 in the picture but the ordering # is part # 34336 which I've already ordered from Sears just need to know where the ends hook to. I'll include a pic whether it helps or not I'm not sure. Not sure if this wire is true to the original shape

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billybb17 -
October 25, 2013
A:

billybb17, Thank you for posting the pictures. The wire in the first image is not the original wire. I think someone tried to rig it up. According to the second image, it looks like both of the rods are connected. The rod connected to the carburetor should connect to the governor lever on the other end. The other rod should connect to the throttle lever on one end and the other connects to the spring that is connected to the governor lever. The image below shows how it should be connected. 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
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