Small Engines (Lawn Mowers, etc.)/Snowblower


QUESTION: Not sure if you know about snowblowers but here goes. I have 1 10 year old Craftsman 8hp snowblower. I started it easily in November. I tried to start it today & the cord was tough to pull out. It came out a few inches at a time. I removed the sparkplug and the cord pulled easily. I replaced sparkplug and couldn't pull cord again. Any ideas?
Thank You

ANSWER: Did you use the correct replacement spark plug?  Make sure the threaded part is the same length as the old spark plug.

Remove the spark plug.  Pull the string like you are trying to start it.  Does fluid squirt out the spark plug hole?

Is the oil thin, runny and smell like gasoline?

We see the problem you described all the time.  The carburetor leaks and gas runs into the engine oil thinning the oil.  Thin, runny oil gets past the engine rings, valves and causes the engine to hydrolock when you try to pull the cord.

If the oil is thin, runny an smells like gasoline you MUST CHANGE it!

Let me know about the oil.

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

QUESTION: I didn't replace spark plug. Nothing comes out of hole when I pull cord

With the spark plug installed, are you still having trouble pulling the string?

What is the Sears model number?  The model number is on a sticker, about the size of a business card, and the format will be 123.45678.

Let me know the model number so I can look up your model.

Small Engines (Lawn Mowers, etc.)

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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

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