Model #917377801 CRAFTSMAN Walk Behind Lawnmower, Gas

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Question and Answers

Q:

belt replacement Craftsman Gas, walk behind lawnmower

A:

Thanks for the inquiry and for using SearsPartsDirect.com. 
Replacing the drive belt will be a pretty straight forward process. You will need to remove the rear belt cover to gain access to the belt. With a 1/4" socket, you will want to loosen the two pulley bolts, but do not take them all the way out. By loosening the bolts, it makes installing the new belt easier. From there, you will want to remove the blade adaptor and debris shield to gain access to the pulley above the blade adaptor. An impact wrench helps tremendously with the removal of the adaptor. With the blade adaptor off, you will be able to get the belt around the pulley. It might be a good time to replace the blade adaptor at the same time as they do get worn over time. 
To help you through this install with visuals, I have provided a blue link below for a video on the belt installation. This is not your exact model, but the general steps between the two will be the same.

Craftsman Mower Belt Installation

Hope this helps out and thanks for using SearsPartsDirect.com. We appreciate your business.

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Jeff Wallace Sr -
Sears Technician
June 03, 2014
A:

These instructions weren't even close as far as putting the belt on the pulleys, because my Craftsman mower has four pulleys, with two(large) on the ends and two(small) in the middle. The middle ones are used to engage the rear wheels when the lever is pulled up.(I only needed help on the middle ones) So the general steps between the two will not be the same. Not to worry, I figured it out by myself.

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larry -
June 03, 2014
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Q:

How do I make this part work?

A:

I have attached a photo of the blade brake assembly for you. If this is not a clear enough shot of the tab in question, let me know and I'll pull one down at the shop and take some more photos of it for you.

Thank you for using Manage My Life!

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Wade_B -
Sears Technician
September 09, 2013
Q:

I have Craftsman walk behind lawn mower model 917.377801 that back fires when I start it. Engine hot, stop to dump bag, reduce speed first, fires on pull, why?

A:

i Understand how inconvenient it can be to have a misfire occurring in your lawn mower since this can affect the function of your mower so I hope to be of some help. While you are waiting for an expert asnwer, I did manage to find a link that will provide you with more information about your problem. I hope my link is useful.

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Joseph P. -
November 18, 2010
A:

The first thing to check for this is the valve clearances. Both intake and exhaust should be set to between .004-.008. The valves really should be checked and adjusted once a year. Once you have that done, if you still have the problem I would look to the fuel system for the problem.

There may be some trash in the carburetor bowl causing this to happen. You can take the bowl off the carb and clean it out using carb/choke cleaner (available at any auto parts retailer). While you have the bowl off of the carb, spray up into the center post (jet) with the carb/choke cleaner as well.

One of those 2 will likely solve the problems you're having with your mower. If not, let me know (back here on this thread) and we can explore some other things that may be causing this to happen.

Thank you for using Manage My Life!

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XX Wade_ -
Sears Technician
November 19, 2010
A:

Joseph P. - OK, this mower does not have a throttle stop so it could be getting too much gas. Throttle moves through to choke setting so maybe I get it too "fast" on engine speed/gas feed. Thank you. Expert - Wade B - engine has not been adjusted or carb cleaned. I can understand now that this could be problem. I may not have burned all the gas out of engine last year or two as I had before before winter storage. Thank you, now to find time to do maintenance. dsr10335

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dsr10335 -
November 22, 2010
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