Tecumseh Kick Back, Sheared Key - HobbyTalk
 
LinkBack Thread Tools Search this Thread
post #1 of 2 (permalink) Old 07-09-2009, 06:36 PM Thread Starter
Member
 
Join Date: Feb 2009
Posts: 19
Tecumseh Kick Back, Sheared Key

Hello everyone. This is my first post. Please bear with me.

I bought a Craftsman mower for $3 at a yard sale. It is a 371.636111 with a 143.976600 Tecumseh engine. It does not run, hence the $3 price. The oil looks clean and full, little wear on the front self propel wheels, and the plug is clean. Upon inspection I found the blade adapter cracked and the key sheared in two. I purchased a 730235B bowl kit for the carb. No doubt it will need it as it has probably hasn't run for some time.

My question: Would the kickback when starting be due only to the cracked blade adapter? The blade was actually spinning on the shaft. I pulled the starter cup and it looks like the flyweel key is in its correct position. I will attempt to attach a couple photos.

Thanks in advance!
Attached Images
File Type: jpg DSCN0099 (Small).jpg (50.6 KB, 20 views)
File Type: jpg DSCN0100 (Small).jpg (50.2 KB, 21 views)
Cobrargc is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 07-09-2009, 06:43 PM
Top Dog
 
30yearTech's Avatar
 
Join Date: Sep 2006
Location: Central Texas
Posts: 6,102
Yes, the blade acts as a counter balance for the engine. The added inertia of the weight of the blade helps keep the engine tuning in the right direction when starting. The ignition is setup with a slight advance and without a blade or counter weight attached tightly to the crankshaft, the engine will kick back when you try to start. If the flywheel key gets sheared this will also cause the ignition timing to advance more, so you can get kick back on engines where the blade is tight, but the key is sheared.

You may want to make sure the crankshaft is not bent while you have it down to this point. Hitting something is what usually causes this type of damage to blade adapters.
30yearTech is offline  
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the HobbyTalk forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome