Briggs & Stratton 4 HP Engine not sparking (Cylinder Mower)

Reply

  #1  
Old 06-24-13, 12:54 AM
Member
Thread Starter
Join Date: Jun 2013
Location: England
Posts: 5
Wink Briggs & Stratton 4 HP Engine not sparking (Cylinder Mower)

Picked up a lawnmower on ebay which will not start. There is no spark being generated but can't figure out why. The mower is in a good mechanical state, so a worthy project and was hoping someone could spare the time to help me get this fine machine cutting grass again. Regards John
 
Sponsored Links
  #2  
Old 06-24-13, 04:56 AM
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 17,737
First, you did not say what make & model you have so it's impossible to give specific advice.

Make sure the coil is not grounded which is what's done to turn the mower off. It could be as simple as the switch being bad. Next I would try a new spark plug or test for spark at the end of the spark plug wire. If still no spark it is possible that the coil is bad.
 
  #3  
Old 06-24-13, 05:50 AM
Member
Thread Starter
Join Date: Jun 2013
Location: England
Posts: 5
Thank you for your prompt reply and apologies for being vague but now have guidance on how to identify the mower and will post the details as soon as I can.
 
  #4  
Old 06-24-13, 06:50 AM
Member
Join Date: Oct 2011
Location: USA
Posts: 433
Remove the kill wire from the coil and see if you have spark, the kill wire is on the bottom of the coil and is a very small black wire,,,,,if you have spark, then the kill wire is grounded some where, if no spark after removing kill wire, replace coil.
 
  #5  
Old 06-24-13, 08:25 PM
hopkinsr2's Avatar
Member
Join Date: Feb 2005
Location: canada
Posts: 1,561
What is a "Cylinder Mower"??? Is this a reel type?? If so, is it old enough to have points?? If you post the engine # the pros here will be able to tell you how to make it electronic ignition,,as you may have an issue with points,,, Roger
 
  #6  
Old 06-25-13, 10:36 AM
Member
Thread Starter
Join Date: Jun 2013
Location: England
Posts: 5
Hi Have found the engine details

Model 100232
Type 051001
Code 75081207
 
  #7  
Old 06-25-13, 10:59 AM
Member
Thread Starter
Join Date: Jun 2013
Location: England
Posts: 5
Hi The engine details are

Model 100232
Type 051001
Code 75081207
 
  #8  
Old 06-25-13, 11:21 AM
Member
Join Date: Oct 2011
Location: USA
Posts: 433
Yep check points,,take flywheel off and check to see if contacts are burned on points and condensor,,,file them clean if so, regap and try spark again.
 
  #9  
Old 06-26-13, 03:56 AM
Member
Thread Starter
Join Date: Jun 2013
Location: England
Posts: 5
Thanks for the advice. I am still trying to source a repair manual so would appreciate some advice how to remove the flywheel. Do I ned a puller? Regards John
 
  #10  
Old 06-26-13, 04:38 AM
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 17,737
I generally do not use a puller. After the bolt is removed I start with gentle taps with a plastic or dead blow hammer while pulling on the flywheel. Always be mindful to not bend the crank shaft. I moderately tap around the perimeter of the flywheel to help it break free and tap straight down on a bolt in the end of the crank. Usually it comes off but if it does not I go for a puller.
 
  #11  
Old 06-26-13, 04:59 AM
Member
Join Date: Oct 2011
Location: USA
Posts: 433
After you get the recoil clutch off, you can lightly tap flywheel off with hammer. No bolts involved the recoil clutch holds flywheel on. Be aware that the flywheel key will come out also, make sure to get that back in when putting it back together. Good luck.
 
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