Tecumseh Kick Back, Sheared Key - HobbyTalk
  
HobbyTalk Forum for Diecast Collectors, Modelers, Slot Cars, & Radio Control
Home Forums Photo Album RC TrackFinder Catalog Donation/HobbyTalk Supporter

Welcome to the HobbyTalk forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, view attachments, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us. Forgotten your password? Click here!

NOTE: Once you register and are logged in this welcome section will no longer be visible.

Go Back   HobbyTalk > Small Engine Repair > Small Engine Repair 4-Cycle
Register Classifieds Help/TOS Members List Calendar Mark Forums Read

Reply
 
Thread Tools
  #1  
Old 07-09-2009, 05:36 PM
Cobrargc Cobrargc is offline
Member

My Photos
 
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)
Reply With Quote
  #2  
Old 07-09-2009, 05:43 PM
30yearTech's Avatar
30yearTech 30yearTech is offline
HobbyTalk Supporter

My Photos
 
Join Date: Sep 2006
Location: Central Texas
Posts: 5,705
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.
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not 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

Forum Jump


Featured Sponsor

You Can Sponsor
A HobbyTalk Forum


HobbyTalk® Sponsors
Diecast
CScollectibles
Collectables Corner
DieCast Alley
Global Diecast Direct
Milezone
Mini-Motors Inc
Scoomer
The Toy Peddler
Toy Car Aution
Models
MegaHobby
Modeler’s Brand
ParaGrafix Modeling Systems
Radio Control
BeachRC.com
B-Fast RC
Dirt Cheap RC
Discount RC Tires
Irrgang Racing Service
Lefthander RC
MaxAmps.com
RCTV Live
SMC Racing
Speedzone
Thunder Racing
Tekin
Trend Times
TQ Racing
Windtunnel Racing
Slot Cars
AFX Racing
Scoomer
Slot Magazine
Sponsored Events

Become a
HobbyTalk® Supporter

Advertise on HobbyTalk®



Powered by vBulletin®
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
All times are GMT -4. The time now is 05:28 AM.
HobbyTalk® is a Registered Trademark of HobbyTalk Ltd.
All other logos and trademarks on this site are property of their respective owner.
Copyright (c) 1997-2012 HobbyTalk Ltd. No use without permission.
Advertising positioning by Digital Point