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  1. os 50 sx max rpm 11000
  2. Where to find needle valve assembly for older FS 70 Surpass
  3. os91 engine
  4. 1.40 cold starting?
  5. OS 91 FX break in and props?
  6. OS50SX...Very Strange problem!!!
  7. OS .12 TR (P) needle settings?
  8. os 91fs cuts out during flight
  9. OS 70 crank shaft
  10. crank-50sx vs 50sxh
  11. OS 91 FX which prop for slow flight/torque?
  12. Size for carb screws
  13. O.S. FT-160 Twin
  14. Suggestion for OS 2-stroke muffler improvement
  15. OS 50 SX and OS 50SXH Problem?
  16. Replace conrod and piston pin os21 VF-BR
  17. Propeller Shaft - O.S. 70 Surpass
  18. Where to buy new needle for 46 FX
  19. OS 50SX Carb problem, need help.
  20. Ring for OS 50
  21. OS .65 marine engines
  22. 1.60 overheating ?
  23. prop size and rpm
  24. loose muffler
  25. Loose manifold
  26. OS70 SurpassII Carby
  27. 140 FI. How do I reset EC1
  28. no NV response on OS46FA
  29. Gemini Question
  30. 91FX rpm
  31. 120 SURPASS DOWN ON POWER?
  32. 91 fx break in
  33. FX 61
  34. older 61 fourstroke
  35. OS .91 SX-H
  36. BGX-1 3500 wont run vertical help
  37. OS 70 Ultimate
  38. 61 FX idle adjustment keeps changing
  39. FT-300
  40. OS .40 Surpass 4-stroke problem
  41. OS 91 Surpass II Max RPM and Tach Setting?
  42. O.S. .91 Surpass I carb settings and beginners questions.
  43. .46 ax sllimline muffler
  44. OS Max .10 orientation
  45. OS 91 Surpass Idle Problem
  46. thread size on .52 4s
  47. OS7D Carb Setting
  48. OS .91 FSR
  49. OS120 SIII RPM
  50. Practical rpm vs Rated Power
  51. OS 91 FX exhaust pipe
  52. Tuned pipe for 50 SX
  53. New 91 4-stroke crankcase vent strategy?
  54. OS 15 CL conversion?
  55. Break in FS-91 SII
  56. FX91 mixture problem
  57. Prop for 0s50 sx
  58. what causes this
  59. OS FS-91 Idle settings problem
  60. OS #743 muffler
  61. Need some help Bax!!!
  62. Breaking in a .61 FX
  63. OS 61 RFP ABC
  64. os .26 and .40 4 stroke car engines q's
  65. OS 46 C/L venturi diameter
  66. os fs90 fourstroke
  67. OS 91 FS engine quits
  68. OS 61FX Air Filter?
  69. OS 70 Ultimate
  70. OS BGX
  71. os 1.08 breakin
  72. Needle valve location OS 160
  73. O.S 1.60
  74. 30% CoolPower us in 4-strokes
  75. Electronic copy of instructions for O.S. 60 four-stroke engine
  76. OS FS 120 WITH INCLINED ROCKERS INSTRUCTIONS
  77. OS 32H Question
  78. OS 91 Surpass Exhaust header breaks
  79. Is there a .25 AX on the way?
  80. OS 46FX muffler screw
  81. OS 1.60 bearings
  82. Help, was this my fault or OS's?
  83. Muffler back pressure
  84. propeller for OS 30
  85. 90FS Ring Gap
  86. 15 CVA cover plate
  87. LA65 Header pipe
  88. OS .32 Fabc
  89. 61RF-P ABC prop questions
  90. OS FT 300
  91. Cowled OS 91 FX
  92. Problem with OS 26 FS
  93. FS-91 Surpass II - Black residue on the inside-top of fuel tank after running in
  94. OS 61 MAX SF Pumped
  95. OS 90 needle valve and o ring
  96. tank pressure
  97. fuel?
  98. Rumors of an .18
  99. Varnish or Rust?
  100. 61FX pitts muffler
  101. OS 1.08
  102. vz-rz interchange?
  103. MOVED: Need an O.S. FS61 Marine engine
  104. OS .21VZ-B Premature Wear Problems - Please Advise
  105. OS .60 FP RN
  106. Beginner: Cannot Start O.S. .46 LA
  107. OS300 4stroke twin
  108. O.S. Max FP 40
  109. Proper Break-In for an O.S. 25 fx
  110. Prop for OS 300 4stroke twin
  111. OS 50SHX-H
  112. Installing valves in cylinder head
  113. Rumor on the .46 FX
  114. OS FX 91 problems
  115. Hard to tune
  116. owners and parts manual, o s 61 sf
  117. 91 FX knocking
  118. .91 4-stroke exhaust pipe size
  119. OS FS 48 Surpass
  120. O.S. Carburetor #6B .61 SFN-H
  121. OS 61 FSR Carb question/replacement
  122. Bearings
  123. O.S. 46 FS
  124. OS FS-91 Removing the bearings
  125. Question about the Hanno Specials
  126. OS 120 FS SURPASS W/PUMP PLUMBING?
  127. Replacement Piston Ring
  128. OS 120 FSIII w/pump
  129. OS 300 4 stroke twin
  130. OS 160 FX Crank Case Tap?
  131. 140RX throttle linearity
  132. Great Service
  133. Tuning 120 fs surpass
  134. 3 View Outline ??
  135. Timing on O.S. .91SF Surpass
  136. .15FP CL vs RC question
  137. OS 108, Remote needle?
  138. OS .46 LA
  139. OS 108
  140. the 46ax
  141. OS 1.60FX Fuel choices
  142. OS FP/LA interchangability
  143. having problems with OS 91FX
  144. Help for parts for a 90 FSR?
  145. OS 61 SF Burning Plugs
  146. Os 140 rx
  147. OS 140RX
  148. OS 60 FR Muffler??
  149. Bax - Hobby Services inability to repair older OS engines??
  150. OS 160 Cant Get It Rich
  151. OS parts
  152. Parts for discontinued engine
  153. 91FX and a Bisson Pitts Muffler
  154. OS 48FS choke valve interchangability
  155. Hanno Special Header Length
  156. OS Max H
  157. OS 1.60 FX SPINNER ADAPTOR ?????
  158. Is my 46fx liner peeling?
  159. OS-32SX-H question
  160. Hanno Special Plug?
  161. 50 sx-h ring
  162. FX91-What fuel tubing size?
  163. o.s. 50 sx air bubbles
  164. having problems with tuning of O.S .61FX
  165. Setting up an O.S. 160FX
  166. Screw Size 46 LA
  167. i need to know what do i need to turn my os .12 cv into a pull start
  168. 2 questions about my os 40 la
  169. OSMax 12 CZ-Z problem
  170. Temperature of engines?
  171. OS 40Max-H My first engine teardown-help!
  172. OS 46LA...only as powerful as a 40?
  173. OS .46 FX Issue
  174. .91 FSR Parts Sources...
  175. OS 91 FS II pump
  176. OS91 - Dry rear bearing
  177. Problems with MAX 61FX
  178. OS FX .46 Getting Tired?
  179. OS 90FS FOUR STROKE ENGINE IDLE SETTING
  180. Info on FS120S II
  181. parts exchangeability
  182. HELP!! MY OS 50SX ISN'T RUNNING PROPERLY!
  183. Storage of OS 120FS with pump
  184. OS 46 FX Problem
  185. .61SF-P pump nipple broken
  186. OS #743 muffler replacement that fits?
  187. pre detonating OS 1.6
  188. OS 50 w/ 60 Carburetor
  189. OS 61RF-P
  190. OS 40 LA Airbleed setting
  191. OS Rotary engine
  192. O.S. 50 SX air bubbles
  193. os 48 compression loss
  194. OS 120 FS Question
  195. Question about service turn around time
  196. FS 70 Ultimate Availability
  197. OS 91 getting richer on idle
  198. OS 160 Fuel ?
  199. OS LA40 Carb Repair
  200. O.S. .91 FX
  201. OS FS-52 Throbbing
  202. 91 FX idle
  203. OS 70 S II Question
  204. Rusted stuff
  205. os 70 heli engine piston explodes
  206. OS 40 LA Power
  207. OS 91 Surpass question
  208. 52 4/C won't draw fuel
  209. LA 0.40 RPM's running away from me.
  210. OS MAX RZ compression
  211. OLD vs NEW OS 46 FX
  212. OS 140RX Rich in Midrange
  213. OS 1.60 Prop
  214. OS 25 MAX FP
  215. FS-120 (non-surpass) Performance Specifications
  216. FS 48 Surpass
  217. New or Old OS - How do you tell?
  218. ring job
  219. Four stroke mufflers
  220. .46FX to .50SX Upgrade ... help please ...
  221. OS FT-300 FOR MY PITTS SPECIAL
  222. Newly Broken In OS 46 FX
  223. Remote needle valves in os .50 SX and .91 FX
  224. OS 61 FS Muffler?
  225. Can I Make My .61FX a .91?
  226. 40 SR parts
  227. bubbles!! ehhh!
  228. O.S. .61 SX-H Heli Engine- HEIM Mechanics Setup
  229. Tried everything, 46 NV still leaks?
  230. os 46fx..need serious help
  231. OS 40 No compression
  232. OS Max SR-40 Marine - what muffler?
  233. Main bearing broke
  234. Manual for a Max .61 SF?
  235. Tri prop for OS FS70
  236. How to send an item to service
  237. About this Forum
  238. fx 61 loosing power
  239. engine help
  240. OS 91 Surpass-version I
  241. O.S. 25FX and O.S. 25SF
  242. New 91FX muffler missing baffle
  243. OS 91 FX very slow to idle down
  244. os Wankel 1800
  245. OS 91 FX
  246. O.S. 1.08 FSR
  247. I lost a muffler bolt on my 46 fx
  248. Corrosion on piston/cylinder and crank
  249. Port timing 91FX Vs 91SxH
  250. 25 la....

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