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  1. Info On OS 52 FS
  2. OS 70 Ultimate RPM Figures
  3. How to remove cylinder lining in OS ABC-engine?
  4. OS 160 FT outline drawing and dimensions ?
  5. OS .46 Fx sleeve problems
  6. 0S FS 120 SURPASS PUMP DIAPHRAM
  7. OS 1.40 'popping' at idle
  8. OS 70 Ultimate problems
  9. OS Max .21 VZ-B (P) rear exhaust engine
  10. One way bearing prob
  11. will it fit?????????? plz hlp
  12. OS make Chrome sleeve?
  13. which muffler??
  14. os 91 vr df
  15. Carb Parts for 91 4 stroke.
  16. OS 70Surpass - starting problem
  17. OS 1.40 eating glow plugs
  18. OS 120 FT
  19. OS Engine Comparison
  20. OS 45 FSR Part
  21. Reassembly procedure. OS Gemini 120 & 160
  22. Glow Plugs for OS .25 FX
  23. os 50 sx max rpm 11000
  24. Where to find needle valve assembly for older FS 70 Surpass
  25. os91 engine
  26. 1.40 cold starting?
  27. OS 91 FX break in and props?
  28. OS50SX...Very Strange problem!!!
  29. OS .12 TR (P) needle settings?
  30. os 91fs cuts out during flight
  31. OS 70 crank shaft
  32. crank-50sx vs 50sxh
  33. OS 91 FX which prop for slow flight/torque?
  34. Size for carb screws
  35. O.S. FT-160 Twin
  36. Suggestion for OS 2-stroke muffler improvement
  37. OS 50 SX and OS 50SXH Problem?
  38. Replace conrod and piston pin os21 VF-BR
  39. Propeller Shaft - O.S. 70 Surpass
  40. Where to buy new needle for 46 FX
  41. OS 50SX Carb problem, need help.
  42. Ring for OS 50
  43. OS .65 marine engines
  44. 1.60 overheating ?
  45. prop size and rpm
  46. loose muffler
  47. Loose manifold
  48. OS70 SurpassII Carby
  49. 140 FI. How do I reset EC1
  50. no NV response on OS46FA
  51. Gemini Question
  52. 91FX rpm
  53. 120 SURPASS DOWN ON POWER?
  54. 91 fx break in
  55. FX 61
  56. older 61 fourstroke
  57. OS .91 SX-H
  58. BGX-1 3500 wont run vertical help
  59. OS 70 Ultimate
  60. 61 FX idle adjustment keeps changing
  61. FT-300
  62. OS .40 Surpass 4-stroke problem
  63. OS 91 Surpass II Max RPM and Tach Setting?
  64. O.S. .91 Surpass I carb settings and beginners questions.
  65. .46 ax sllimline muffler
  66. OS Max .10 orientation
  67. OS 91 Surpass Idle Problem
  68. thread size on .52 4s
  69. OS7D Carb Setting
  70. OS .91 FSR
  71. OS120 SIII RPM
  72. Practical rpm vs Rated Power
  73. OS 91 FX exhaust pipe
  74. Tuned pipe for 50 SX
  75. New 91 4-stroke crankcase vent strategy?
  76. OS 15 CL conversion?
  77. Break in FS-91 SII
  78. FX91 mixture problem
  79. Prop for 0s50 sx
  80. what causes this
  81. OS FS-91 Idle settings problem
  82. OS #743 muffler
  83. Need some help Bax!!!
  84. Breaking in a .61 FX
  85. OS 61 RFP ABC
  86. os .26 and .40 4 stroke car engines q's
  87. OS 46 C/L venturi diameter
  88. os fs90 fourstroke
  89. OS 91 FS engine quits
  90. OS 61FX Air Filter?
  91. OS 70 Ultimate
  92. OS BGX
  93. os 1.08 breakin
  94. Needle valve location OS 160
  95. O.S 1.60
  96. 30% CoolPower us in 4-strokes
  97. Electronic copy of instructions for O.S. 60 four-stroke engine
  98. OS FS 120 WITH INCLINED ROCKERS INSTRUCTIONS
  99. OS 32H Question
  100. OS 91 Surpass Exhaust header breaks
  101. Is there a .25 AX on the way?
  102. OS 46FX muffler screw
  103. OS 1.60 bearings
  104. Help, was this my fault or OS's?
  105. Muffler back pressure
  106. propeller for OS 30
  107. 90FS Ring Gap
  108. 15 CVA cover plate
  109. LA65 Header pipe
  110. OS .32 Fabc
  111. 61RF-P ABC prop questions
  112. OS FT 300
  113. Cowled OS 91 FX
  114. Problem with OS 26 FS
  115. FS-91 Surpass II - Black residue on the inside-top of fuel tank after running in
  116. OS 61 MAX SF Pumped
  117. OS 90 needle valve and o ring
  118. tank pressure
  119. fuel?
  120. Rumors of an .18
  121. Varnish or Rust?
  122. 61FX pitts muffler
  123. OS 1.08
  124. vz-rz interchange?
  125. MOVED: Need an O.S. FS61 Marine engine
  126. OS .21VZ-B Premature Wear Problems - Please Advise
  127. OS .60 FP RN
  128. Beginner: Cannot Start O.S. .46 LA
  129. OS300 4stroke twin
  130. O.S. Max FP 40
  131. Proper Break-In for an O.S. 25 fx
  132. Prop for OS 300 4stroke twin
  133. OS 50SHX-H
  134. Installing valves in cylinder head
  135. Rumor on the .46 FX
  136. OS FX 91 problems
  137. Hard to tune
  138. owners and parts manual, o s 61 sf
  139. 91 FX knocking
  140. .91 4-stroke exhaust pipe size
  141. OS FS 48 Surpass
  142. O.S. Carburetor #6B .61 SFN-H
  143. OS 61 FSR Carb question/replacement
  144. Bearings
  145. O.S. 46 FS
  146. OS FS-91 Removing the bearings
  147. Question about the Hanno Specials
  148. OS 120 FS SURPASS W/PUMP PLUMBING?
  149. Replacement Piston Ring
  150. OS 120 FSIII w/pump
  151. OS 300 4 stroke twin
  152. OS 160 FX Crank Case Tap?
  153. 140RX throttle linearity
  154. Great Service
  155. Tuning 120 fs surpass
  156. 3 View Outline ??
  157. Timing on O.S. .91SF Surpass
  158. .15FP CL vs RC question
  159. OS 108, Remote needle?
  160. OS .46 LA
  161. OS 108
  162. the 46ax
  163. OS 1.60FX Fuel choices
  164. OS FP/LA interchangability
  165. having problems with OS 91FX
  166. Help for parts for a 90 FSR?
  167. OS 61 SF Burning Plugs
  168. Os 140 rx
  169. OS 140RX
  170. OS 60 FR Muffler??
  171. Bax - Hobby Services inability to repair older OS engines??
  172. OS 160 Cant Get It Rich
  173. OS parts
  174. Parts for discontinued engine
  175. 91FX and a Bisson Pitts Muffler
  176. OS 48FS choke valve interchangability
  177. Hanno Special Header Length
  178. OS Max H
  179. OS 1.60 FX SPINNER ADAPTOR ?????
  180. Is my 46fx liner peeling?
  181. OS-32SX-H question
  182. Hanno Special Plug?
  183. 50 sx-h ring
  184. FX91-What fuel tubing size?
  185. o.s. 50 sx air bubbles
  186. having problems with tuning of O.S .61FX
  187. Setting up an O.S. 160FX
  188. Screw Size 46 LA
  189. i need to know what do i need to turn my os .12 cv into a pull start
  190. 2 questions about my os 40 la
  191. OSMax 12 CZ-Z problem
  192. Temperature of engines?
  193. OS 40Max-H My first engine teardown-help!
  194. OS 46LA...only as powerful as a 40?
  195. OS .46 FX Issue
  196. .91 FSR Parts Sources...
  197. OS 91 FS II pump
  198. OS91 - Dry rear bearing
  199. Problems with MAX 61FX
  200. OS FX .46 Getting Tired?
  201. OS 90FS FOUR STROKE ENGINE IDLE SETTING
  202. Info on FS120S II
  203. parts exchangeability
  204. HELP!! MY OS 50SX ISN'T RUNNING PROPERLY!
  205. Storage of OS 120FS with pump
  206. OS 46 FX Problem
  207. .61SF-P pump nipple broken
  208. OS #743 muffler replacement that fits?
  209. pre detonating OS 1.6
  210. OS 50 w/ 60 Carburetor
  211. OS 61RF-P
  212. OS 40 LA Airbleed setting
  213. OS Rotary engine
  214. O.S. 50 SX air bubbles
  215. os 48 compression loss
  216. OS 120 FS Question
  217. Question about service turn around time
  218. FS 70 Ultimate Availability
  219. OS 91 getting richer on idle
  220. OS 160 Fuel ?
  221. OS LA40 Carb Repair
  222. O.S. .91 FX
  223. OS FS-52 Throbbing
  224. 91 FX idle
  225. OS 70 S II Question
  226. Rusted stuff
  227. os 70 heli engine piston explodes
  228. OS 40 LA Power
  229. OS 91 Surpass question
  230. 52 4/C won't draw fuel
  231. LA 0.40 RPM's running away from me.
  232. OS MAX RZ compression
  233. OLD vs NEW OS 46 FX
  234. OS 140RX Rich in Midrange
  235. OS 1.60 Prop
  236. OS 25 MAX FP
  237. FS-120 (non-surpass) Performance Specifications
  238. FS 48 Surpass
  239. New or Old OS - How do you tell?
  240. ring job
  241. Four stroke mufflers
  242. .46FX to .50SX Upgrade ... help please ...
  243. OS FT-300 FOR MY PITTS SPECIAL
  244. Newly Broken In OS 46 FX
  245. Remote needle valves in os .50 SX and .91 FX
  246. OS 61 FS Muffler?
  247. Can I Make My .61FX a .91?
  248. 40 SR parts
  249. bubbles!! ehhh!
  250. O.S. .61 SX-H Heli Engine- HEIM Mechanics Setup