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