Author Topic: Replaced piston/cylinder now won't fire  (Read 2517 times)

0 Members and 55 Guests are viewing this topic.

Offline 3000 FPS

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 4706
  • Karma: 320
  • Location: Carpenter, Wyoming

  • Total Badges: 43
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Level 7 Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary
Re: Replaced piston/cylinder now won't fire
« Reply #40 on: December 07, 2013, 09:46:40 pm »
If it were me I would check the squish on the saw at this point to make sure what you installed are the correct parts.   

You remove the spark plug, then take a piece of solder like you would use for soldering electrical things, and then put the solder through the spark plug hole and bend it so that it touches the cylinder wall.   You want to have the solder facing out toward the sides of the saw and not from front to back.   Then grab the flywheel with your hand and crank it over until is smashes the solder.  Then back it up to smash it again.   
Remove the solder and then measure the very end of it to see how much room there is between the cylinder top and the piston top.   It could be let say some where around .050"s to .035"s.   If there is an excessive amount it will make the compression low and could be the wrong piston.   But you have to measure it to see.
PP 505, 475, 445.

 

Related Topics

  Subject / Started by Replies Last post
2 Replies
629 Views
Last post August 04, 2011, 08:04:28 pm
by Old Iron Logging
28 Replies
2526 Views
Last post February 16, 2012, 06:58:36 am
by brokenbudget
12 Replies
1199 Views
Last post January 26, 2012, 09:09:40 am
by ECpirates96
0 Replies
473 Views
Last post May 24, 2012, 08:20:22 pm
by MP5N
20 Replies
3672 Views
Last post March 18, 2022, 07:56:44 am
by Cut4fun .
19 Replies
1404 Views
Last post September 09, 2013, 09:51:10 pm
by doreadeal
40 Replies
2331 Views
Last post December 20, 2013, 01:00:22 pm
by Spike60
17 Replies
1488 Views
Last post May 12, 2014, 12:40:25 am
by sharkey
21 Replies
1841 Views
Last post November 29, 2014, 08:29:17 am
by weimedog
1 Replies
263 Views
Last post October 27, 2023, 10:20:52 am
by Cut4fun .