craftsman 358.351081 chainsaw

Reply

  #1  
Old 05-23-12, 08:36 AM
Member
Thread Starter
Join Date: Nov 2009
Location: Southern New Hampshire
Posts: 25
craftsman 358.351081 chainsaw

I have a craftman 358.351081 (poulan I think) 2.6 18" chainsaw. Several years old but has served me well. Last october it would not restart after use. I drained fuel & shelved it till spring. Well cleaned it up changed the plug, new fuel and it still wont start. Tried starting fluid still no go. I pulled the plug and checked for spark there is a tiny very tiny spark. I am not sure what is normal. The plug was gapped at .025 same as old??. I checked the cylinder for scorring found none it appears to have compression. Is there any chance coil is gone bad or weak. It was a good saw but isn't worth pouring money into. any ball park estimate on a coil? My first thought is weak, no or not enough spark. Any thoughts are appreciated.
Thanks
Rich
 
Sponsored Links
  #2  
Old 05-23-12, 09:55 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,821
If it is sparking, the coil is probably fine. Is the plug wet? Can you put a little gas into the spark plug hole, put the plug in, give it full throttle and see if it will start like that?
 
  #3  
Old 05-23-12, 12:01 PM
Member
Thread Starter
Join Date: Nov 2009
Location: Southern New Hampshire
Posts: 25
Cheese- the plug was not wet. I poured a teaspoon or so into plug hole. Still no start or even a sputter.
Thanks
Rich
 
  #4  
Old 05-23-12, 04:38 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,821
Try gapping the plug a .050" and see if it still sparks. If so, I'd say the coil is good enough. Do you have access to a compression gauge?
 
  #5  
Old 05-27-12, 05:06 PM
Member
Thread Starter
Join Date: Nov 2009
Location: Southern New Hampshire
Posts: 25
I did gap the plug at .050 and I do have spark. I will have access to a compression tester in the next couple of days. Any idea what range would be acceptable. Also what is the correct spark plug gap for this engine?
Thanks
Rich
 
  #6  
Old 05-27-12, 07:45 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,821
.025" to .030" is good for the plug. On a 2-stroke, I like to see 130 psi at least. It may run on a bit less, depending on the condition of the rest of the saw.
 
  #7  
Old 06-05-12, 06:00 AM
Member
Thread Starter
Join Date: Nov 2009
Location: Southern New Hampshire
Posts: 25
sorry for delay waiting to get hold of compression tester. I got a reading of 60psi. dry. I injected some oil into cylinder and got a reading of 85psi. Strangest thing it started right up after injecting oil. It must be running on borowed time I
suspect. But thats about how often I use it.
 
  #8  
Old 06-05-12, 09:28 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,821
Yep, the oil boosted compression enough for it to start. I think it's useful life has ended.
 
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