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  1. Low RPM out of OS Max FP .25
  2. O.S. .61 MAX FSR Engine help
  3. O.S 1.20FSIIIP+mount
  4. OS 91FX remote needle
  5. OS .46 carb problem
  6. NEED Regulator Cover of #70C carb body
  7. O.S 502 pipe system...
  8. O.S. 70 Ultimate Problem - Fuel leak
  9. os fs.70s surpass II prop
  10. OS 120 FT
  11. O.S. FS-120 manual
  12. OS 50 SX quitting
  13. OS 120 FSIII power down
  14. Headers for OS 120 III pumped
  15. OS 1.08 need a new ring and liner
  16. OS Cylinder Peeling
  17. Info On OS 52 FS
  18. OS 70 Ultimate RPM Figures
  19. How to remove cylinder lining in OS ABC-engine?
  20. OS 160 FT outline drawing and dimensions ?
  21. OS .46 Fx sleeve problems
  22. 0S FS 120 SURPASS PUMP DIAPHRAM
  23. OS 1.40 'popping' at idle
  24. OS 70 Ultimate problems
  25. OS Max .21 VZ-B (P) rear exhaust engine
  26. One way bearing prob
  27. will it fit?????????? plz hlp
  28. OS make Chrome sleeve?
  29. which muffler??
  30. os 91 vr df
  31. Carb Parts for 91 4 stroke.
  32. OS 70Surpass - starting problem
  33. OS 1.40 eating glow plugs
  34. OS 120 FT
  35. OS Engine Comparison
  36. OS 45 FSR Part
  37. Reassembly procedure. OS Gemini 120 & 160
  38. Glow Plugs for OS .25 FX
  39. os 50 sx max rpm 11000
  40. Where to find needle valve assembly for older FS 70 Surpass
  41. os91 engine
  42. 1.40 cold starting?
  43. OS 91 FX break in and props?
  44. OS50SX...Very Strange problem!!!
  45. OS .12 TR (P) needle settings?
  46. os 91fs cuts out during flight
  47. OS 70 crank shaft
  48. crank-50sx vs 50sxh
  49. OS 91 FX which prop for slow flight/torque?
  50. Size for carb screws
  51. O.S. FT-160 Twin
  52. Suggestion for OS 2-stroke muffler improvement
  53. OS 50 SX and OS 50SXH Problem?
  54. Replace conrod and piston pin os21 VF-BR
  55. Propeller Shaft - O.S. 70 Surpass
  56. Where to buy new needle for 46 FX
  57. OS 50SX Carb problem, need help.
  58. Ring for OS 50
  59. OS .65 marine engines
  60. 1.60 overheating ?
  61. prop size and rpm
  62. loose muffler
  63. Loose manifold
  64. OS70 SurpassII Carby
  65. 140 FI. How do I reset EC1
  66. no NV response on OS46FA
  67. Gemini Question
  68. 91FX rpm
  69. 120 SURPASS DOWN ON POWER?
  70. 91 fx break in
  71. FX 61
  72. older 61 fourstroke
  73. OS .91 SX-H
  74. BGX-1 3500 wont run vertical help
  75. OS 70 Ultimate
  76. 61 FX idle adjustment keeps changing
  77. FT-300
  78. OS .40 Surpass 4-stroke problem
  79. OS 91 Surpass II Max RPM and Tach Setting?
  80. O.S. .91 Surpass I carb settings and beginners questions.
  81. .46 ax sllimline muffler
  82. OS Max .10 orientation
  83. OS 91 Surpass Idle Problem
  84. thread size on .52 4s
  85. OS7D Carb Setting
  86. OS .91 FSR
  87. OS120 SIII RPM
  88. Practical rpm vs Rated Power
  89. OS 91 FX exhaust pipe
  90. Tuned pipe for 50 SX
  91. New 91 4-stroke crankcase vent strategy?
  92. OS 15 CL conversion?
  93. Break in FS-91 SII
  94. FX91 mixture problem
  95. Prop for 0s50 sx
  96. what causes this
  97. OS FS-91 Idle settings problem
  98. OS #743 muffler
  99. Need some help Bax!!!
  100. Breaking in a .61 FX
  101. OS 61 RFP ABC
  102. os .26 and .40 4 stroke car engines q's
  103. OS 46 C/L venturi diameter
  104. os fs90 fourstroke
  105. OS 91 FS engine quits
  106. OS 61FX Air Filter?
  107. OS 70 Ultimate
  108. OS BGX
  109. os 1.08 breakin
  110. Needle valve location OS 160
  111. O.S 1.60
  112. 30% CoolPower us in 4-strokes
  113. Electronic copy of instructions for O.S. 60 four-stroke engine
  114. OS FS 120 WITH INCLINED ROCKERS INSTRUCTIONS
  115. OS 32H Question
  116. OS 91 Surpass Exhaust header breaks
  117. Is there a .25 AX on the way?
  118. OS 46FX muffler screw
  119. OS 1.60 bearings
  120. Help, was this my fault or OS's?
  121. Muffler back pressure
  122. propeller for OS 30
  123. 90FS Ring Gap
  124. 15 CVA cover plate
  125. LA65 Header pipe
  126. OS .32 Fabc
  127. 61RF-P ABC prop questions
  128. OS FT 300
  129. Cowled OS 91 FX
  130. Problem with OS 26 FS
  131. FS-91 Surpass II - Black residue on the inside-top of fuel tank after running in
  132. OS 61 MAX SF Pumped
  133. OS 90 needle valve and o ring
  134. tank pressure
  135. fuel?
  136. Rumors of an .18
  137. Varnish or Rust?
  138. 61FX pitts muffler
  139. OS 1.08
  140. vz-rz interchange?
  141. MOVED: Need an O.S. FS61 Marine engine
  142. OS .21VZ-B Premature Wear Problems - Please Advise
  143. OS .60 FP RN
  144. Beginner: Cannot Start O.S. .46 LA
  145. OS300 4stroke twin
  146. O.S. Max FP 40
  147. Proper Break-In for an O.S. 25 fx
  148. Prop for OS 300 4stroke twin
  149. OS 50SHX-H
  150. Installing valves in cylinder head
  151. Rumor on the .46 FX
  152. OS FX 91 problems
  153. Hard to tune
  154. owners and parts manual, o s 61 sf
  155. 91 FX knocking
  156. .91 4-stroke exhaust pipe size
  157. OS FS 48 Surpass
  158. O.S. Carburetor #6B .61 SFN-H
  159. OS 61 FSR Carb question/replacement
  160. Bearings
  161. O.S. 46 FS
  162. OS FS-91 Removing the bearings
  163. Question about the Hanno Specials
  164. OS 120 FS SURPASS W/PUMP PLUMBING?
  165. Replacement Piston Ring
  166. OS 120 FSIII w/pump
  167. OS 300 4 stroke twin
  168. OS 160 FX Crank Case Tap?
  169. 140RX throttle linearity
  170. Great Service
  171. Tuning 120 fs surpass
  172. 3 View Outline ??
  173. Timing on O.S. .91SF Surpass
  174. .15FP CL vs RC question
  175. OS 108, Remote needle?
  176. OS .46 LA
  177. OS 108
  178. the 46ax
  179. OS 1.60FX Fuel choices
  180. OS FP/LA interchangability
  181. having problems with OS 91FX
  182. Help for parts for a 90 FSR?
  183. OS 61 SF Burning Plugs
  184. Os 140 rx
  185. OS 140RX
  186. OS 60 FR Muffler??
  187. Bax - Hobby Services inability to repair older OS engines??
  188. OS 160 Cant Get It Rich
  189. OS parts
  190. Parts for discontinued engine
  191. 91FX and a Bisson Pitts Muffler
  192. OS 48FS choke valve interchangability
  193. Hanno Special Header Length
  194. OS Max H
  195. OS 1.60 FX SPINNER ADAPTOR ?????
  196. Is my 46fx liner peeling?
  197. OS-32SX-H question
  198. Hanno Special Plug?
  199. 50 sx-h ring
  200. FX91-What fuel tubing size?
  201. o.s. 50 sx air bubbles
  202. having problems with tuning of O.S .61FX
  203. Setting up an O.S. 160FX
  204. Screw Size 46 LA
  205. i need to know what do i need to turn my os .12 cv into a pull start
  206. 2 questions about my os 40 la
  207. OSMax 12 CZ-Z problem
  208. Temperature of engines?
  209. OS 40Max-H My first engine teardown-help!
  210. OS 46LA...only as powerful as a 40?
  211. OS .46 FX Issue
  212. .91 FSR Parts Sources...
  213. OS 91 FS II pump
  214. OS91 - Dry rear bearing
  215. Problems with MAX 61FX
  216. OS FX .46 Getting Tired?
  217. OS 90FS FOUR STROKE ENGINE IDLE SETTING
  218. Info on FS120S II
  219. parts exchangeability
  220. HELP!! MY OS 50SX ISN'T RUNNING PROPERLY!
  221. Storage of OS 120FS with pump
  222. OS 46 FX Problem
  223. .61SF-P pump nipple broken
  224. OS #743 muffler replacement that fits?
  225. pre detonating OS 1.6
  226. OS 50 w/ 60 Carburetor
  227. OS 61RF-P
  228. OS 40 LA Airbleed setting
  229. OS Rotary engine
  230. O.S. 50 SX air bubbles
  231. os 48 compression loss
  232. OS 120 FS Question
  233. Question about service turn around time
  234. FS 70 Ultimate Availability
  235. OS 91 getting richer on idle
  236. OS 160 Fuel ?
  237. OS LA40 Carb Repair
  238. O.S. .91 FX
  239. OS FS-52 Throbbing
  240. 91 FX idle
  241. OS 70 S II Question
  242. Rusted stuff
  243. os 70 heli engine piston explodes
  244. OS 40 LA Power
  245. OS 91 Surpass question
  246. 52 4/C won't draw fuel
  247. LA 0.40 RPM's running away from me.
  248. OS MAX RZ compression
  249. OLD vs NEW OS 46 FX
  250. OS 140RX Rich in Midrange