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  1. OS 70 Ultimate
  2. OS BGX
  3. os 1.08 breakin
  4. Needle valve location OS 160
  5. O.S 1.60
  6. 30% CoolPower us in 4-strokes
  7. Electronic copy of instructions for O.S. 60 four-stroke engine
  8. OS FS 120 WITH INCLINED ROCKERS INSTRUCTIONS
  9. OS 32H Question
  10. OS 91 Surpass Exhaust header breaks
  11. Is there a .25 AX on the way?
  12. OS 46FX muffler screw
  13. OS 1.60 bearings
  14. Help, was this my fault or OS's?
  15. Muffler back pressure
  16. propeller for OS 30
  17. 90FS Ring Gap
  18. 15 CVA cover plate
  19. LA65 Header pipe
  20. OS .32 Fabc
  21. 61RF-P ABC prop questions
  22. OS FT 300
  23. Cowled OS 91 FX
  24. Problem with OS 26 FS
  25. FS-91 Surpass II - Black residue on the inside-top of fuel tank after running in
  26. OS 61 MAX SF Pumped
  27. OS 90 needle valve and o ring
  28. tank pressure
  29. fuel?
  30. Rumors of an .18
  31. Varnish or Rust?
  32. 61FX pitts muffler
  33. OS 1.08
  34. vz-rz interchange?
  35. MOVED: Need an O.S. FS61 Marine engine
  36. OS .21VZ-B Premature Wear Problems - Please Advise
  37. OS .60 FP RN
  38. Beginner: Cannot Start O.S. .46 LA
  39. OS300 4stroke twin
  40. O.S. Max FP 40
  41. Proper Break-In for an O.S. 25 fx
  42. Prop for OS 300 4stroke twin
  43. OS 50SHX-H
  44. Installing valves in cylinder head
  45. Rumor on the .46 FX
  46. OS FX 91 problems
  47. Hard to tune
  48. owners and parts manual, o s 61 sf
  49. 91 FX knocking
  50. .91 4-stroke exhaust pipe size
  51. OS FS 48 Surpass
  52. O.S. Carburetor #6B .61 SFN-H
  53. OS 61 FSR Carb question/replacement
  54. Bearings
  55. O.S. 46 FS
  56. OS FS-91 Removing the bearings
  57. Question about the Hanno Specials
  58. OS 120 FS SURPASS W/PUMP PLUMBING?
  59. Replacement Piston Ring
  60. OS 120 FSIII w/pump
  61. OS 300 4 stroke twin
  62. OS 160 FX Crank Case Tap?
  63. 140RX throttle linearity
  64. Great Service
  65. Tuning 120 fs surpass
  66. 3 View Outline ??
  67. Timing on O.S. .91SF Surpass
  68. .15FP CL vs RC question
  69. OS 108, Remote needle?
  70. OS .46 LA
  71. OS 108
  72. the 46ax
  73. OS 1.60FX Fuel choices
  74. OS FP/LA interchangability
  75. having problems with OS 91FX
  76. Help for parts for a 90 FSR?
  77. OS 61 SF Burning Plugs
  78. Os 140 rx
  79. OS 140RX
  80. OS 60 FR Muffler??
  81. Bax - Hobby Services inability to repair older OS engines??
  82. OS 160 Cant Get It Rich
  83. OS parts
  84. Parts for discontinued engine
  85. 91FX and a Bisson Pitts Muffler
  86. OS 48FS choke valve interchangability
  87. Hanno Special Header Length
  88. OS Max H
  89. OS 1.60 FX SPINNER ADAPTOR ?????
  90. Is my 46fx liner peeling?
  91. OS-32SX-H question
  92. Hanno Special Plug?
  93. 50 sx-h ring
  94. FX91-What fuel tubing size?
  95. o.s. 50 sx air bubbles
  96. having problems with tuning of O.S .61FX
  97. Setting up an O.S. 160FX
  98. Screw Size 46 LA
  99. i need to know what do i need to turn my os .12 cv into a pull start
  100. 2 questions about my os 40 la
  101. OSMax 12 CZ-Z problem
  102. Temperature of engines?
  103. OS 40Max-H My first engine teardown-help!
  104. OS 46LA...only as powerful as a 40?
  105. OS .46 FX Issue
  106. .91 FSR Parts Sources...
  107. OS 91 FS II pump
  108. OS91 - Dry rear bearing
  109. Problems with MAX 61FX
  110. OS FX .46 Getting Tired?
  111. OS 90FS FOUR STROKE ENGINE IDLE SETTING
  112. Info on FS120S II
  113. parts exchangeability
  114. HELP!! MY OS 50SX ISN'T RUNNING PROPERLY!
  115. Storage of OS 120FS with pump
  116. OS 46 FX Problem
  117. .61SF-P pump nipple broken
  118. OS #743 muffler replacement that fits?
  119. pre detonating OS 1.6
  120. OS 50 w/ 60 Carburetor
  121. OS 61RF-P
  122. OS 40 LA Airbleed setting
  123. OS Rotary engine
  124. O.S. 50 SX air bubbles
  125. os 48 compression loss
  126. OS 120 FS Question
  127. Question about service turn around time
  128. FS 70 Ultimate Availability
  129. OS 91 getting richer on idle
  130. OS 160 Fuel ?
  131. OS LA40 Carb Repair
  132. O.S. .91 FX
  133. OS FS-52 Throbbing
  134. 91 FX idle
  135. OS 70 S II Question
  136. Rusted stuff
  137. os 70 heli engine piston explodes
  138. OS 40 LA Power
  139. OS 91 Surpass question
  140. 52 4/C won't draw fuel
  141. LA 0.40 RPM's running away from me.
  142. OS MAX RZ compression
  143. OLD vs NEW OS 46 FX
  144. OS 140RX Rich in Midrange
  145. OS 1.60 Prop
  146. OS 25 MAX FP
  147. FS-120 (non-surpass) Performance Specifications
  148. FS 48 Surpass
  149. New or Old OS - How do you tell?
  150. ring job
  151. Four stroke mufflers
  152. .46FX to .50SX Upgrade ... help please ...
  153. OS FT-300 FOR MY PITTS SPECIAL
  154. Newly Broken In OS 46 FX
  155. Remote needle valves in os .50 SX and .91 FX
  156. OS 61 FS Muffler?
  157. Can I Make My .61FX a .91?
  158. 40 SR parts
  159. bubbles!! ehhh!
  160. O.S. .61 SX-H Heli Engine- HEIM Mechanics Setup
  161. Tried everything, 46 NV still leaks?
  162. os 46fx..need serious help
  163. OS 40 No compression
  164. OS Max SR-40 Marine - what muffler?
  165. Main bearing broke
  166. Manual for a Max .61 SF?
  167. Tri prop for OS FS70
  168. How to send an item to service
  169. About this Forum
  170. fx 61 loosing power
  171. engine help
  172. OS 91 Surpass-version I
  173. O.S. 25FX and O.S. 25SF
  174. New 91FX muffler missing baffle
  175. OS 91 FX very slow to idle down
  176. os Wankel 1800
  177. OS 91 FX
  178. O.S. 1.08 FSR
  179. I lost a muffler bolt on my 46 fx
  180. Corrosion on piston/cylinder and crank
  181. Port timing 91FX Vs 91SxH
  182. 25 la....
  183. FS-120 surpass fuel setup
  184. 0.s.15 cv-rx refusing to keep running
  185. OS 46 SF
  186. FS-70 header pipe broke on run-in
  187. Pressure Tap OS 91FX
  188. OS60 MAX-H
  189. Bax - OS .10 FSR Con Rod Substitute??
  190. FS90 head stripped
  191. Looking for OS FS-26 Info ...
  192. 46FX - engine rpm up and down at full throttle
  193. Prop Choice
  194. OS 120 w/pump instruction manual needed
  195. OS 120 Surpass I power loss
  196. OS 50 sx Sucking air?
  197. Brass hexagon inlet holder position??
  198. Liner pealing
  199. O.S. 46FX Engine temp
  200. Wankel woes
  201. OS FS-70S head
  202. OS 50 SX making strange noise
  203. 46 LA Prop spun off during break-in run
  204. I'm a newb: OS Max SF 61 With Pump
  205. OS 160FX Bearing Problems?
  206. fx160 needle setting?
  207. OS120 Surpass I Bearings & Gasket Q?
  208. Os .15 Cva
  209. Aeroworks Extra 300L Profile ARF + OS BGX-1 (3500)
  210. Os70 Sz-h Ring
  211. help with surpass 70
  212. oil content and type
  213. Warranty service on OS.91FX, turn around time??
  214. os max 40fp + glow plug
  215. New OS 91 SX acro?
  216. Help with disassemble of OS 120 FS
  217. Position of Fuel Tank
  218. O.S .12 TR(P)-T help.
  219. OS FX 1.60 + Top Flight 18x10
  220. O.S. 32 sx-h gradually lost power
  221. OS 140 RX Bearing
  222. Valve clearence for OS 91 Surpass?
  223. os 300 twin mounting
  224. Surpass 70
  225. Is the Tower plug same as the OS #8???
  226. OS 1.08 low end needle problems
  227. O.S. .46fx
  228. OS .46 fx muffler
  229. 1.60FX Needle Valve replacement
  230. os 61 h wc start off fuel settings
  231. O.S.70B Mixture Control Carb
  232. OS carb # 7DV
  233. OS 46 fx
  234. which muffler?
  235. OS 120 Surpass II head gaskets
  236. 120 Surpass II running lean and needle valve screwed all the way out!?
  237. OS 120 Surpass III optional header
  238. Turnaround time at O.S.
  239. Replacement of my 91FX (Bax)
  240. os 46 fx doesnt turn
  241. 91 Fx
  242. OS 91 MAX Muffler wanted.
  243. the perfect propeller is...
  244. O.S. FS-120S-E Carb leakage
  245. OS FS 91 4 Stroke
  246. 48 surpass compression loss
  247. Ff-240
  248. .21 Rg M
  249. .21 outboard
  250. OS 120 II idle problem

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