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

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