Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

backfire


slodrive's Avatar
Member

Join Date: Apr 2008
Posts: 2
SC

04-06-08, 01:30 PM   #1  
backfire

poulan mower got on it .motor turns over sounds like it wants start.but when let go of key engine backfires and sheer's flywheel key. put new key done same thing again.any suggestions thanks--slodrive

 
Sponsored Links
ericschevy's Avatar
Member

Join Date: Apr 2008
Posts: 16
MI

04-06-08, 02:33 PM   #2  
Is the timing right? Pre detonation can cause this.

 
cheese's Avatar
Forum Topic Moderator

Join Date: Jul 2001
Posts: 16,567
GA

04-06-08, 10:14 PM   #3  
It continues to shear the flywheel key? If so, I'd say the flywheel bolt isn't being tightened to proper torque. Also, do not allow oil or grease to contact the mating surfaces on the crankshaft and flywheel or it will shear the key again.


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
Search this Thread