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  1. Size for carb screws
  2. O.S. FT-160 Twin
  3. Suggestion for OS 2-stroke muffler improvement
  4. OS 50 SX and OS 50SXH Problem?
  5. Replace conrod and piston pin os21 VF-BR
  6. Propeller Shaft - O.S. 70 Surpass
  7. Where to buy new needle for 46 FX
  8. OS 50SX Carb problem, need help.
  9. Ring for OS 50
  10. OS .65 marine engines
  11. 1.60 overheating ?
  12. prop size and rpm
  13. loose muffler
  14. Loose manifold
  15. OS70 SurpassII Carby
  16. 140 FI. How do I reset EC1
  17. no NV response on OS46FA
  18. Gemini Question
  19. 91FX rpm
  20. 120 SURPASS DOWN ON POWER?
  21. 91 fx break in
  22. FX 61
  23. older 61 fourstroke
  24. OS .91 SX-H
  25. BGX-1 3500 wont run vertical help
  26. OS 70 Ultimate
  27. 61 FX idle adjustment keeps changing
  28. FT-300
  29. OS .40 Surpass 4-stroke problem
  30. OS 91 Surpass II Max RPM and Tach Setting?
  31. O.S. .91 Surpass I carb settings and beginners questions.
  32. .46 ax sllimline muffler
  33. OS Max .10 orientation
  34. OS 91 Surpass Idle Problem
  35. thread size on .52 4s
  36. OS7D Carb Setting
  37. OS .91 FSR
  38. OS120 SIII RPM
  39. Practical rpm vs Rated Power
  40. OS 91 FX exhaust pipe
  41. Tuned pipe for 50 SX
  42. New 91 4-stroke crankcase vent strategy?
  43. OS 15 CL conversion?
  44. Break in FS-91 SII
  45. FX91 mixture problem
  46. Prop for 0s50 sx
  47. what causes this
  48. OS FS-91 Idle settings problem
  49. OS #743 muffler
  50. Need some help Bax!!!
  51. Breaking in a .61 FX
  52. OS 61 RFP ABC
  53. os .26 and .40 4 stroke car engines q's
  54. OS 46 C/L venturi diameter
  55. os fs90 fourstroke
  56. OS 91 FS engine quits
  57. OS 61FX Air Filter?
  58. OS 70 Ultimate
  59. OS BGX
  60. os 1.08 breakin
  61. Needle valve location OS 160
  62. O.S 1.60
  63. 30% CoolPower us in 4-strokes
  64. Electronic copy of instructions for O.S. 60 four-stroke engine
  65. OS FS 120 WITH INCLINED ROCKERS INSTRUCTIONS
  66. OS 32H Question
  67. OS 91 Surpass Exhaust header breaks
  68. Is there a .25 AX on the way?
  69. OS 46FX muffler screw
  70. OS 1.60 bearings
  71. Help, was this my fault or OS's?
  72. Muffler back pressure
  73. propeller for OS 30
  74. 90FS Ring Gap
  75. 15 CVA cover plate
  76. LA65 Header pipe
  77. OS .32 Fabc
  78. 61RF-P ABC prop questions
  79. OS FT 300
  80. Cowled OS 91 FX
  81. Problem with OS 26 FS
  82. FS-91 Surpass II - Black residue on the inside-top of fuel tank after running in
  83. OS 61 MAX SF Pumped
  84. OS 90 needle valve and o ring
  85. tank pressure
  86. fuel?
  87. Rumors of an .18
  88. Varnish or Rust?
  89. 61FX pitts muffler
  90. OS 1.08
  91. vz-rz interchange?
  92. MOVED: Need an O.S. FS61 Marine engine
  93. OS .21VZ-B Premature Wear Problems - Please Advise
  94. OS .60 FP RN
  95. Beginner: Cannot Start O.S. .46 LA
  96. OS300 4stroke twin
  97. O.S. Max FP 40
  98. Proper Break-In for an O.S. 25 fx
  99. Prop for OS 300 4stroke twin
  100. OS 50SHX-H
  101. Installing valves in cylinder head
  102. Rumor on the .46 FX
  103. OS FX 91 problems
  104. Hard to tune
  105. owners and parts manual, o s 61 sf
  106. 91 FX knocking
  107. .91 4-stroke exhaust pipe size
  108. OS FS 48 Surpass
  109. O.S. Carburetor #6B .61 SFN-H
  110. OS 61 FSR Carb question/replacement
  111. Bearings
  112. O.S. 46 FS
  113. OS FS-91 Removing the bearings
  114. Question about the Hanno Specials
  115. OS 120 FS SURPASS W/PUMP PLUMBING?
  116. Replacement Piston Ring
  117. OS 120 FSIII w/pump
  118. OS 300 4 stroke twin
  119. OS 160 FX Crank Case Tap?
  120. 140RX throttle linearity
  121. Great Service
  122. Tuning 120 fs surpass
  123. 3 View Outline ??
  124. Timing on O.S. .91SF Surpass
  125. .15FP CL vs RC question
  126. OS 108, Remote needle?
  127. OS .46 LA
  128. OS 108
  129. the 46ax
  130. OS 1.60FX Fuel choices
  131. OS FP/LA interchangability
  132. having problems with OS 91FX
  133. Help for parts for a 90 FSR?
  134. OS 61 SF Burning Plugs
  135. Os 140 rx
  136. OS 140RX
  137. OS 60 FR Muffler??
  138. Bax - Hobby Services inability to repair older OS engines??
  139. OS 160 Cant Get It Rich
  140. OS parts
  141. Parts for discontinued engine
  142. 91FX and a Bisson Pitts Muffler
  143. OS 48FS choke valve interchangability
  144. Hanno Special Header Length
  145. OS Max H
  146. OS 1.60 FX SPINNER ADAPTOR ?????
  147. Is my 46fx liner peeling?
  148. OS-32SX-H question
  149. Hanno Special Plug?
  150. 50 sx-h ring
  151. FX91-What fuel tubing size?
  152. o.s. 50 sx air bubbles
  153. having problems with tuning of O.S .61FX
  154. Setting up an O.S. 160FX
  155. Screw Size 46 LA
  156. i need to know what do i need to turn my os .12 cv into a pull start
  157. 2 questions about my os 40 la
  158. OSMax 12 CZ-Z problem
  159. Temperature of engines?
  160. OS 40Max-H My first engine teardown-help!
  161. OS 46LA...only as powerful as a 40?
  162. OS .46 FX Issue
  163. .91 FSR Parts Sources...
  164. OS 91 FS II pump
  165. OS91 - Dry rear bearing
  166. Problems with MAX 61FX
  167. OS FX .46 Getting Tired?
  168. OS 90FS FOUR STROKE ENGINE IDLE SETTING
  169. Info on FS120S II
  170. parts exchangeability
  171. HELP!! MY OS 50SX ISN'T RUNNING PROPERLY!
  172. Storage of OS 120FS with pump
  173. OS 46 FX Problem
  174. .61SF-P pump nipple broken
  175. OS #743 muffler replacement that fits?
  176. pre detonating OS 1.6
  177. OS 50 w/ 60 Carburetor
  178. OS 61RF-P
  179. OS 40 LA Airbleed setting
  180. OS Rotary engine
  181. O.S. 50 SX air bubbles
  182. os 48 compression loss
  183. OS 120 FS Question
  184. Question about service turn around time
  185. FS 70 Ultimate Availability
  186. OS 91 getting richer on idle
  187. OS 160 Fuel ?
  188. OS LA40 Carb Repair
  189. O.S. .91 FX
  190. OS FS-52 Throbbing
  191. 91 FX idle
  192. OS 70 S II Question
  193. Rusted stuff
  194. os 70 heli engine piston explodes
  195. OS 40 LA Power
  196. OS 91 Surpass question
  197. 52 4/C won't draw fuel
  198. LA 0.40 RPM's running away from me.
  199. OS MAX RZ compression
  200. OLD vs NEW OS 46 FX
  201. OS 140RX Rich in Midrange
  202. OS 1.60 Prop
  203. OS 25 MAX FP
  204. FS-120 (non-surpass) Performance Specifications
  205. FS 48 Surpass
  206. New or Old OS - How do you tell?
  207. ring job
  208. Four stroke mufflers
  209. .46FX to .50SX Upgrade ... help please ...
  210. OS FT-300 FOR MY PITTS SPECIAL
  211. Newly Broken In OS 46 FX
  212. Remote needle valves in os .50 SX and .91 FX
  213. OS 61 FS Muffler?
  214. Can I Make My .61FX a .91?
  215. 40 SR parts
  216. bubbles!! ehhh!
  217. O.S. .61 SX-H Heli Engine- HEIM Mechanics Setup
  218. Tried everything, 46 NV still leaks?
  219. os 46fx..need serious help
  220. OS 40 No compression
  221. OS Max SR-40 Marine - what muffler?
  222. Main bearing broke
  223. Manual for a Max .61 SF?
  224. Tri prop for OS FS70
  225. How to send an item to service
  226. About this Forum
  227. fx 61 loosing power
  228. engine help
  229. OS 91 Surpass-version I
  230. O.S. 25FX and O.S. 25SF
  231. New 91FX muffler missing baffle
  232. OS 91 FX very slow to idle down
  233. os Wankel 1800
  234. OS 91 FX
  235. O.S. 1.08 FSR
  236. I lost a muffler bolt on my 46 fx
  237. Corrosion on piston/cylinder and crank
  238. Port timing 91FX Vs 91SxH
  239. 25 la....
  240. FS-120 surpass fuel setup
  241. 0.s.15 cv-rx refusing to keep running
  242. OS 46 SF
  243. FS-70 header pipe broke on run-in
  244. Pressure Tap OS 91FX
  245. OS60 MAX-H
  246. Bax - OS .10 FSR Con Rod Substitute??
  247. FS90 head stripped
  248. Looking for OS FS-26 Info ...
  249. 46FX - engine rpm up and down at full throttle
  250. Prop Choice

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