Author Topic: Help, my chainsaw :(  (Read 670 times)

0 Members and 0 Guests are viewing this topic.

Offline greenelephant

  • pruner
  • *
  • Posts: 3
  • Karma: 0
Help, my chainsaw :(
« on: June 01, 2014, 03:32:09 pm »
Hello everyone

I have a Ryobi PCN-3335 Petrol 33cc Chainsaw.

To cut a long story short I needed to strip down my chainsaw. All that remains is the main chassis plus piston, crankshaft and clutch. The cylinder head has been removed.

My problem which I done in my ignorance is take off the cylinder head without thinking about the piston ring on the piston.  :o

PLease click on the following urls to see photographs of my chainsaw

http://tab140.freewebspace.com/1.jpg
http://tab140.freewebspace.com/2.jpg
http://tab140.freewebspace.com/3.jpg
http://tab140.freewebspace.com/4.jpg
http://tab140.freewebspace.com/5.jpg
http://tab140.freewebspace.com/6.jpg
http://tab140.freewebspace.com/7.jpg
http://tab140.freewebspace.com/8.jpg
http://tab140.freewebspace.com/9.jpg

(My webhost does allow linking. BUt if you click on the URL and inside the new window or tab go the the address bar and hit the enter or return button, the picture will appear.)

Picture 2.jpg shows you the flywheel at the bottom of the photo plus piston oil sump and crankshaft
Picture 6.jpg shows you the brake cable plus the clutch

My problem is I am struggling to insert the piston into the cylinder head. CAn anyone help me?
I have mentioned picture 6 as I may need to take off the clutch, but I dont know how without risking damage to the chainsaw. Any help given to me I would be grateful for.

thanks :) :) :) :)

Share on Facebook Share on Twitter


Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: Help, my chainsaw :(
« Reply #1 on: June 01, 2014, 03:46:14 pm »
The rings have locating pins that place the ring gap in between the port openings.

The ring gaps must be aligned about these pins or they will not compress flush against the piston so it will go up inside the cylinder.

I've used a big zip tie to hold the ring in so I can get the piston up inside the piston.

When the ring goes in - the zip tie falls around the connecting rod whereby you cut the zip tie off.
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 . . .

Offline greenelephant

  • pruner
  • *
  • Posts: 3
  • Karma: 0
Re: Help, my chainsaw :(
« Reply #2 on: June 01, 2014, 03:52:29 pm »
OK. JUst I am struggling to take the clutch off and removing the crankshaft+piston away from the chassis/body. What shall I do?

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: Help, my chainsaw :(
« Reply #3 on: June 01, 2014, 03:59:36 pm »
The clutch has left hand threads. It has to come off first or there is no way to hold the crankshaft to keep it from turning
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 . . .

Offline greenelephant

  • pruner
  • *
  • Posts: 3
  • Karma: 0
Re: Help, my chainsaw :(
« Reply #4 on: June 01, 2014, 04:03:27 pm »
Photos attached

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: Help, my chainsaw :(
« Reply #5 on: June 01, 2014, 04:28:54 pm »
Why are you taking such a new chainsaw apart?
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 . . .

Offline sharkey

  • Piped Saw
  • *****
  • Posts: 367
  • Karma: 37
Re: Help, my chainsaw :(
« Reply #6 on: June 02, 2014, 09:57:08 pm »
??My problem is I am struggling to insert the piston into the cylinder head.
-Cut a 1 inch strip out of a plastic two litre pop bottle and use it as a ring compressor.

Offline KilliansRedLeo

  • Nitro Hotsaw
  • *******
  • Posts: 2361
  • Karma: 80
  • Location: Rochester, NY
    • RoCHusqvarna
Re: Help, my chainsaw :(
« Reply #7 on: June 03, 2014, 09:13:06 am »
+1 on that Sharkey!

660, he might be just like the rest of us, buy a new saw, run it a little bit, then tear it apart and put it back together just to see what it is made of. I bought a brand new 562XP and a 543XP from Spike60 and right out of the box tore them apart and put them back together before I started either one, still have not had time to put either in wood!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: Help, my chainsaw :(
« Reply #8 on: June 03, 2014, 09:32:09 am »
I did that a few times as a kid but any more, unless I suspect a problem, I leave them alone.
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 . . .

Offline KilliansRedLeo

  • Nitro Hotsaw
  • *******
  • Posts: 2361
  • Karma: 80
  • Location: Rochester, NY
    • RoCHusqvarna
Re: Help, my chainsaw :(
« Reply #9 on: June 03, 2014, 09:36:35 am »
I still tear new model or new to me saws apart because I don't want to be dumb founded when a customer walks in with one!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

 

Related Topics

  Subject / Started by Replies Last post
30 Replies
5308 Views
Last post December 03, 2020, 08:46:09 pm
by Elden
1 Replies
150 Views
Last post August 25, 2014, 01:47:51 am
by 660magnum
2 Replies
409 Views
Last post September 11, 2014, 03:53:20 pm
by sharkey
4 Replies
352 Views
Last post September 11, 2014, 05:15:35 pm
by mcbob
10 Replies
300 Views
Last post October 10, 2014, 06:31:47 pm
by mnmdad
4 Replies
151 Views
Last post October 15, 2014, 03:39:36 pm
by aclarke
11 Replies
414 Views
Last post November 08, 2014, 10:27:28 pm
by Eccentric
8 Replies
526 Views
Last post December 27, 2014, 12:06:22 pm
by Eccentric
0 Replies
180 Views
Last post January 05, 2015, 07:23:39 pm
by silverman1
5 Replies
314 Views
Last post April 24, 2019, 07:28:52 pm
by Cut4fun .