Model #917273643 Craftsman lawn, tractor

Question and Answers

Q:

Need new 18.5HP motor for my Lawn Tractor (Model # 917273643)

A:

Thank you for your question.

I have checked the model number you have submitted. the part number for the replacement engine is 31Q777-0136-G1 and cost $1120.43. You can call our parts 800 number to order the engine. 1-800-366-7278. You may consider purchasing a new tractor. It will have a 2 year warranty. The engine has a 90 day warranty. Please click on this link to view the tractor we sell.

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
November 23, 2010
Q:

Engine surging 917273643 Craftsman Lawn tractor

A:

When the engine surges it is usually because the governor is worn and needs readjusting or the carburetor is not feeding fuel to the engine properly. To determine which part is malfunctioning there is a simple test. Hold the throttle linkage on the carburetor with your hand. If you can stop the surging by holding the throttle linkage the problem is in the carburetor. If the governor is worn you won't be able to hold the throttle linkage.
 
If the problem is in the carburetor you can replace the carburetor or clean the old one. Try spraying some carburetor cleaner through the air intake while the engine is running. Don't put too much at a time and over-speed the engine. If that doesn't do it the carburetor will need to be rebuilt. Check the throttle shaft and choke shafts for wear. Sometimes they wear the hole in the carburetor larger and it leaks air around the shafts. If this is the case the carburetor will have to be replaced.
 
To adjust the governor turn the engine off. Loosen the bolt that holds the governor arm to the governor shaft. Put the tractor throttle in the high speed position. Hold the governor arm stable and rotate the governor shaft with a screwdriver counter clockwise as far as it will go. Tighten the screw that holds the governor arm to the governor shaft. This will adjust the governor for proper operation.
 
If you rebuild the carburetor you need to order a rebuild kit and disassemble the carburetor and clean all the fuel passages and air passages inside it and replace the parts.
 
To repair the governor you have to tear the engine down. I recommend that you have a technician perform that repair.

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Lyle W -
Sears Technician
June 03, 2014
Q:

The flywheel fan hits the dipstick when I put the blower housing back on my Sears model 917273643. Is there a part missing?

A:

There are no spacers or supports that could have fallen off the blower housing that I know of.

Check to see what is out of place or not properly secured in the dip tube area.

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Jimmy K -
Sears Technician
July 13, 2009