O.S. Engines Support Ask Bill Baxter your questions about O.S. Engines.

OS 40 FSR

Closed Thread
Old 03-22-2012, 12:20 PM
  #1
mercura
Thread Starter
 
Join Date: Nov 2006
Location: Co. Leitrim, IRELAND
Posts: 71
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default OS 40 FSR

Having taking apart to replace bearings, just checking in what direction the arrow on top of the pistion should face?

Dave
mercura is offline  
Old 03-23-2012, 06:19 AM
  #2
Bax
Moderator
 
Join Date: Apr 2002
Location: Monticello, IL
Posts: 19,479
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: OS 40 FSR

The arrow points towards the exhaust port.
Bax is offline  
Old 03-23-2012, 08:15 AM
  #3
mercura
Thread Starter
 
Join Date: Nov 2006
Location: Co. Leitrim, IRELAND
Posts: 71
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: OS 40 FSR

Thank you. Just wanted to be sure.
mercura is offline  
Old 11-04-2014, 09:37 AM
  #4
BigTeeEldorado
 
BigTeeEldorado's Avatar
 
Join Date: Oct 2011
Location: Las Vegas, NV
Posts: 412
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Help needed

I am having a really tough time locating a piston and ring for a 1975 era OS 40 FSR. I have not even been able to identify a part number for the piston. The OS website has the liner but no piston information. I've seen scattered reference to clones but still nothing solid to help me.

The ultimate goal of course is to find those two parts. Any help is appreciated.
BigTeeEldorado is online now  
Old 11-05-2014, 07:39 AM
  #5
Bax
Moderator
 
Join Date: Apr 2002
Location: Monticello, IL
Posts: 19,479
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Parts and part numbers:

.40 FSR Ring:

PIston 24803215
Ring 24803412
Liner 24903106

.40 FSR ABC

Piston/liner assembly: 24903002

These are all discontinued parts, You may be able to locate parts through someone who deals in old engines and sells to the collectors' market. Some of these people advertise in the classified section of the model magazines. An internet search may yield some results. Posting a "parts wanted" ad in the RCU Marketplace may help.
Bax is offline  
Closed Thread


Thread Tools
Search this Thread
Display Modes

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



All times are GMT -8. The time now is 06:52 AM.