Small Engines (Lawn Mowers, etc.)/drive problem with Craftsman


QUESTION: I have a Craftsman (MTD made) snowblower that has 5 forward 2 reverse gears. The gears locked up on me, when I engage the lever, the friction wheel moves against the drive fly wheel, but the actual tires are locked up. Even with the engine turned off, there is no free wheel to roll; again, tires locked. On the drive shaft that the friction wheel is running, there are three individual teethed drive wheels that are hooked to teethed wheels on the axle for the tires. If I remove the wheel closest to the friction wheel, there is free movement, and the engine will then drive the tires, but not very much power. As soon as the little wheel is hooked into the matching large wheel, everything locks up. This wheel doesn't seem to have bearings, it seems to be fitted for the seven dimension axle size. Any ideas / leads to fix this issue? Thanks in advance for your help!

ANSWER: What is the blower model number?  

The wheels are usually locked when trying to turn right or left.  They act like a solid lock automotive rear end.

In neutral you should be able to roll the machine forward and back smoothly.

Do you have reverse and any or all foward speeds?

Send me the model number so I can look up your unit.


---------- FOLLOW-UP ----------

QUESTION: Model# 31AS6BCE752

I have 2 reverse and 5/6 forward gears, however, none of the gears are working because of this gear wheel locking up. Even if I have the engine turned off and the gear lever in the up position, the tires will not free roll (there isn't a neutral). If I remove the small inner wheel with teeth on it, I have a limited speed / power in all gears. Once this inner wheel is put in place - all drive gears and tires lock up!

Thank you for your help!

Is the friction disc stuck on the hex shaft?  Is the shift control rod bent preventing the friction disc from moving along the hex shaft?

The problem almost as to be with the hex shaft or shift control rod.  

If you remove the bottom drive cover, raise the wheels off the ground, and start the engine can you see the friction disc move along the hex shaft as you change speeds?


Small Engines (Lawn Mowers, etc.)

All Answers

Answers by Expert:

Ask Experts


Eric A. Jones


Lawnmower Repair . Certified Master Service Technician from B&S. Have 23 years experience on B&S, Lawn Chief, Weed Eater, Echo, Peerless, Wheel Horse, Snapper, Atlas, MTD, McCulloch, Homelite and many other numerous brands. Specialize in electrical repair.


Born and raised in the midwest. Started tinkering with engines when I was about 14 on my Suzuki RM-80. I began lawn mower repair at a small hardware store. I knew absolutely nothing. I read lots of repair manuals and met an older fellow who taught me many lessons. I continued working on small engines through high school and paid my way through college working on mowers at the same hardware store. Decided to get away from the midwest and mower repair so I joined the Air Force. I repaired air traffic control electronic equipment and ended up in Hawaii where I got a part time job at Small Engine Clinic. I gained a lot of experience from the Small Engine Clinic and had a blast repairing small engines. I then took the Briggs and Stratton Master Service Technician test and earned my MST. I then traveled to Wisconsin where I attended the factory update training seminar and received formal training. Continued working on mowers part time as I completed 20 years of military. Retired from the military on a Friday and continued in the lawn and garden industry the next Monday.

MAS Aerospace Operations BA Mathematics AAS Electronic Communications AAS Electronic Technology

©2017 All rights reserved.