Jonsared Chainsaw flywheel key

Reply

  #1  
Old 04-30-10, 09:19 AM
indypower1's Avatar
Member
Thread Starter
Join Date: May 2009
Location: Lake Winnipesaukee, New Hampshire
Posts: 634
Jonsared Chainsaw flywheel key

A friernd has a Jonsared 535 chainsaw. I believe the flywheel key is sheared due to the fact that it takes a 600 lb gorilla standing on the saw to pull it over. Since I do almost nothing for repairs on the small 2 cycle engines, due to my fat fingers not being able to get into the cramped space, just wondering waht would cause the key to shear on a chainsaw. When the chain gets stuck while sawing, should the clutch kick out before shearing the key?
 
Sponsored Links
  #2  
Old 04-30-10, 09:25 AM
Member
Join Date: Aug 2006
Location: santa fe /texas
Posts: 998
i have an old 'craftsman' 20" saw, that you can't pull through - without using the compression release feature.
does this thing have such?
 
  #3  
Old 04-30-10, 12:23 PM
indypower1's Avatar
Member
Thread Starter
Join Date: May 2009
Location: Lake Winnipesaukee, New Hampshire
Posts: 634
no compresion release on this 1.
 
  #4  
Old 04-30-10, 03:50 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,814
If the clutch is fully engaged and the saw comes to a sudden halt, the key can definitely shear.
 
  #5  
Old 04-30-10, 11:44 PM
hopkinsr2's Avatar
Member
Join Date: Feb 2005
Location: canada
Posts: 1,561
Indy,, I beleive the key is part of the flywheel on these.. Pull it apart & take a look... If it's O.K,, Then I'd be thinking the ignition coil has gone bad,, & the reason I'm saying that is we had 1/2 dozen Stihl weed trimmers that acted as the key broke.. All was fine on inspection but the coil fixed them up,, I think something went wrong in the spark advance part of them.....Roger
 
Reply

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes