- Check the crank bearings!!!
- OMI Mod???
- OS 50 (non-hyper) has the hiccups
- Silicon Exhaust Deflectors - Aaargh
- Strange noises (movie)
- ys50st
- Pumped Motors
- Beginning of the end
- Glow plugs dieing!
- OS Hyper rebuild
- OS-50 running cold at less than 1 turn!!
- os sz 91 mufller
- I should know this, but....
- How many turns for the needle valve to run in?
- tt.50 question about head gasket
- TT Redline .53- Guinee Pig
- TT Pro-39H Mixture settings...HELP PLEASE!!!!
- .50 mount problems (help)
- no problem with the pressure of ys.50 in 600 tank
- A way to dyno a Glow engine
- Hatori SB19 bolt size
- need help finding OS32 carb seal kit and muffler gasket
- Hello Who Has the YS 50 in stock
- Leaky Main Needle - YS 50 ST
- os52 four stroke