Ohlsson Rice type 236

[Todd Lenig 0]

I have an old Orline Chainsaw model 149 with a O&R type 236 engine.  does anyone have any exploded views/parts lists for this engine.  Its almost running however I broke the recoil spring.  luckily just at the center where it enters the cord hub.  everything I've tried works for about 4 to 5 pulls then separates and won't retract.  is there a tip or trick?  is there a modern spring that will work?? any help would be appreciated.  thank you.