Author Topic: Saw timing  (Read 1063 times)

0 Members and 53 Guests are viewing this topic.

Offline rls8836

  • 3 cube
  • *
  • Posts: 16
  • Karma: 1

  • Total Badges: 8
    Badges: (View All)
    Combination Level 2 10 Posts Karma Topic Starter First Post
Re: Saw timing
« Reply #10 on: March 11, 2017, 09:55:54 pm »
Thanks fishnuts2

Offline North West Farmer

  • 4 cube
  • **
  • Posts: 33
  • Karma: 3

  • Total Badges: 17
    Badges: (View All)
    Level 4 Fifth year Anniversary Fourth year Anniversary Karma Good Third year Anniversary Second year Anniversary
Re: Saw timing
« Reply #11 on: April 06, 2017, 07:32:39 pm »
rls8836, I have a Poulan Black Hawk, 14"bar that is 8 to 10 years old.  Has been a great light weight saw that started and ran great all the time.  Last summer it started doing the same thing you discribe in your original post.  This problem has been very puzzeling!  I have removed the flywheel and the cast in place key is in good shape as is the key way in the crank shaft.  If the spark plug is in, the pull rope nearly breaks my fingers wether the kill switch is on or off.  With the spark plug removed, the engine turnes over freely with no issues. I expected to find a sheared key, but when the saw behaved the same way with the switch in both the on and off positions confussion began to come into play..  Checked the spark and it looks good, both via the spark plug grounding test and via using a spark gap tester.  There is no spark when the switch is in the off position.  My next planned action is to remove the muffler to see what conditions are like in the muffler and check the condition of the piston and cylinder wall through the muffler opening.  If that doesn't reveal a possible cause, I next plan to remove the carb. to see what things look like on that side.  Plan to check out the muffler and carb. sides this evening.  Will let you know what the out come of that is, if anything.  During the work I have done up to now, the fuel tank has been empty and there has been no fuel in the cylinder after removing the spark plug, thus hydro locking would seem to be a very remote possibility.  Am hoping an answer is evident upon removal of the muffler and/or the carburetor.  Nick, North West Farmer

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO

  • Total Badges: 39
    Badges: (View All)
    Seventh year Anniversary Sixth year Anniversary Fifth year Anniversary Fourth year Anniversary 5000 Posts Third year Anniversary
Re: Saw timing
« Reply #12 on: April 06, 2017, 07:46:22 pm »
Look at the starter pulley and rope?

Pulleys split and small diameter ropes pull down through themselves
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

 

Related Topics

  Subject / Started by Replies Last post
8 Replies
1246 Views
Last post May 12, 2012, 09:30:03 pm
by Al Smith
timing

Started by jmester « 1 2 3 » Stihl

20 Replies
1862 Views
Last post January 17, 2013, 09:06:02 pm
by 660magnum
100 Replies
5938 Views
Last post February 24, 2013, 12:54:05 pm
by jmester
17 Replies
2501 Views
Last post February 14, 2014, 10:46:23 am
by 660magnum
6 Replies
566 Views
Last post November 02, 2015, 07:43:33 pm
by Al Smith
21 Replies
6809 Views
Last post October 17, 2016, 08:19:31 pm
by dannyupsolate
4 Replies
538 Views
Last post November 02, 2017, 06:30:13 am
by Al Smith
1 Replies
429 Views
Last post January 01, 2019, 09:37:01 am
by Al Smith
0 Replies
501 Views
Last post January 01, 2019, 02:54:04 pm
by trappermike
4 Replies
579 Views
Last post February 15, 2021, 09:09:50 pm
by 3000 FPS