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  1. Os 160 Pipe Spacer Question
  2. OS 46 FX needle valve
  3. Any special forums existing for the FI motors?
  4. OS52fs
  5. 91FX again (sigh)
  6. OS 46fsr
  7. More power to any engine
  8. getting the most power out of my .91 fs
  9. O.S. 25 FX bogs down with 9X5 and 9X6 props...why?
  10. Old FX 46sf-Need help !
  11. 7M carb in a .61SF
  12. .46FX Bearing Damage???
  13. 48 Surpass muffler?
  14. 61 SF Carb pix
  15. peak torque range for OS FS70
  16. Super Charged FS120
  17. OS 61 RF/RF-P Rear Bearing Problems
  18. Replacement for the 61 RXH
  19. Os.46fx
  20. os 61 fs
  21. Os 108 Rear Bearings
  22. OS Max 40 RC
  23. About 61 RF pump
  24. OS LA Rebuilds?
  25. Proper break in procedure for OS 50 SX MAX
  26. detonation
  27. OS Max FS 26 4 stroke help
  28. Tower 46 / Also OS ???
  29. .61 FSR parts into a .61 SF
  30. Inhibiting after-run oil and O.S. Engines
  31. os 70
  32. Screws.
  33. too much heat for 46fx?
  34. Throttle lever info. needed
  35. Which engine to buy?
  36. Fuel For Use On Os Blackhead .60
  37. os61fs pump
  38. Loose crankshaft on 60FP
  39. 120 fs runs rich backfires
  40. FS-52 Throbbing
  41. from 10% nitro to 15%, break in again?
  42. OS Max 46 FX runs well, then quits...
  43. Os Blackhead 60 Parts
  44. OS FS-61 shutting down
  45. Surpass 91 with Pump Surge Problem
  46. .70 sz-h piston damage
  47. Fuel line attachment for OS Max SF 61 pumped
  48. Trouble with new 46FX
  49. 25LA; how much oil?
  50. Exploded View of Older Pump?
  51. OS/Tower Hobbies website question
  52. Black Residue
  53. OS 25 fp RPM ???
  54. OS FP 35 -needle
  55. Best right mount muffler for OS 46 FX-H
  56. I'm not happy with my new OS .91 FX.
  57. Minimum nitro content 1.6 FX-FI
  58. Engine Timing
  59. OS 140 Surpass IV
  60. Fueling tricks for the pumped 91II?
  61. 7D carb
  62. Attn Bill Baxter or any OS rep that can help me
  63. muffler for os max .10
  64. Fuel Consumption pumped FS91-II
  65. OS .46 LA running problems
  66. OS 12 carburetor retainer
  67. Os 80 2 Stroke - Has Two Glow Plugs And Carb On Back
  68. Os 90 Four Stroke Model 1901 - Parts Needed
  69. Crash Question
  70. OS46Fx problems
  71. Why not make a supercharger for an engine!!!!
  72. You guys make great engines!!
  73. Fuel Type
  74. os 50sx problem.
  75. OS 120 4 Stroke Won't Idle Steady
  76. OS 120 Surpass wth pump Mk I
  77. OS 160 twin flame out
  78. Os 28f
  79. Os Older 25 Not Fp25 - Need Muffler
  80. os.32 low power
  81. old OS 90 2 stroke carb question
  82. O.S.Air Bleed Screw-original setting??
  83. OS Max .50 Model 50FSR-H Change Head?
  84. What year was the FS-60 introduced
  85. Help setting up OS Max FP 40
  86. Os Ft 160
  87. os 61 fx at 90 deg.
  88. Manual OS FS-40 (no Surpass)
  89. Surpass 120 valve timing
  90. Os 160 W/bisson Pitts Muffler
  91. O.S. 91fx
  92. 120-4cycle w/pump
  93. Sending for O.S. Max Service
  94. OS Max 60 sr NEED PISTON RING
  95. O.S. Long Stroke
  96. OS LA Series Problems?
  97. I need power band graphs for OS motors
  98. OS 91 Surpass not surpass II
  99. older os 90 with the glowplug in the front -- need both needle settings
  100. OS 46 FX like to start backward
  101. Prop size for Wankel?
  102. Old Os 120 non surpass with separate valve covers
  103. Please Close - found answer
  104. OS FS-120 III Surpass in Mile-High Denver
  105. CoolPower Green for OS .46 FX?.
  106. OS 32SX-H adjustment question
  107. Help with .61FX, changing needle valve position?
  108. OS 70 4 Stroke
  109. Os 46 Fxh
  110. .32
  111. OS 120 Surpass pump Mk1 or How to Save the pump
  112. OS 70 sv-h Breakin
  113. 4 stroke 70 OS
  114. 12CZ engine help
  115. OS 46fx runs great upright, but not inverted.
  116. OS 61 VF-H GS A-2 reduction Gear Unit
  117. Bearing Ball Missing
  118. OS-.50sx Best prop for speed+thrust??
  119. OS91FSII tap question
  120. Are there any downsides....
  121. Muffler Weight
  122. Fs140-fi
  123. need the distructions
  124. Difference between the OS 70 and 70II
  125. OS 70 II Surpass
  126. O.S 32 fh instructions needed
  127. OS .32SXH Bearing Removal
  128. O
  129. 140 RX EFI sagging
  130. Need Piston Help On Os.15cvx
  131. O.S. 1.20 Surpass II...
  132. OS .70 SZ-H Heli Availability
  133. prop size OS 91 surpass
  134. Mufflers For FT-160?
  135. O.S. .15CV settings ECT.
  136. Broken piston on O.S. .46FX
  137. Royally messed up .46FX!!!
  138. OS 91 FX needle settings
  139. 70FS Split Cotter Removal
  140. OS FS91 fuel flow problem
  141. OS .70 4 stroke problem
  142. OS Gemini 120 prop sizes
  143. Fixing up an old os .35fp need some help
  144. OS and KHB sleeve and Piston
  145. .46 Fx Compresssion
  146. 1.60 FX Bearings
  147. what is a stroke ?
  148. Engine running temperatures
  149. .50sx and 30% nitro
  150. OS 30 Max - S?
  151. Heavy hub on new 4 stk OS 91
  152. FS52s lot of oil
  153. Os 91 / Tuned Pipe Installation
  154. os fs 91 problem
  155. o.s. 120 surpass
  156. Compression ratio of OS .46FX and 1.60FX ?
  157. What RPM range in idel for a 0.46FX ?.
  158. os 70 shuts off
  159. OS46 Engine Quits?
  160. OS 91FS stops abrubtly recently
  161. OS 12tr Heat Sink
  162. Thanks O.S.
  163. 4 stoke engine maintenance
  164. Fan Installation os 50 sxh
  165. OS FS .40C Temps
  166. O.S. FS surpass II conversion from pump to non-pump
  167. Surpass II wont't run
  168. 91FX dimensions needed (not in manual)
  169. OS 140 with 60 pipe
  170. OS 120 Surpass II pumped won't run at full throttle.
  171. 61 ABC problems
  172. carburetor OS#60K
  173. OS 40 SF ABC throttle transition
  174. BGX 3500 Help!!!!!!
  175. HEATED owner of an OVERHEATED 91FX
  176. .46Fx
  177. 40 VF
  178. 0S .46SF - I want more power
  179. 91 SX-H timing info needed
  180. OS max 91 four stroke...no power or compression
  181. OS 1.40 prop
  182. .61 FX wont Idle, please help
  183. Gasket
  184. Setting high speed needle valve!
  185. Probs with .40fx
  186. 60J Carb
  187. os 120 surpass II w/pump
  188. OS50 XXrich@1/4 stick
  189. Os .15 Fp
  190. When to rebiuld?
  191. OS .10 Head and Back Plate Screw Sizes
  192. Need a new crank for and O.S.
  193. Removing Bearings and Crankshaft from 40 SF ABC
  194. os 91fs
  195. Os 15
  196. OS Max FP .40 Manual
  197. Os 50 Sxh
  198. Looking for manual
  199. OS 120 Carb
  200. Need OS part number...
  201. OS-30 weight spec is wrong!
  202. O.S. Surpass 30
  203. OS91 C-Spec
  204. 140RX spitting bearing!!!
  205. OS Engine Specs???
  206. fs 60 open rocker
  207. Engine Purchase Questions
  208. O.S. Buggy Engine, Can I convert to Pull start?
  209. Should I replace the case on a os 61?
  210. OS FSR/SF Parts Interchange
  211. OS 140 Rx storage
  212. OS 70 leaking???
  213. .15 Fp
  214. OS 52 4 cyl.
  215. os40la
  216. O.s. 61 Sf Prop Nut Size
  217. Os 91 Fs
  218. Os21 Vz-r
  219. os FX silinder pilling ,is this still hapening Cause i have one that did it with only
  220. OS Max 1.2 FS Surpass II pumped
  221. 120 4cycle w/pump
  222. os40fx vs os fs52s
  223. OS 120 Surpass III w/ pump wont advance from idle
  224. .15cvx
  225. O.S. .28f w/2h carb. Why is the head......
  226. old os 120fs
  227. Amcross, somebody... questions about .46 FX break in ...
  228. Marine engine OS 91 VRM, who knows about existance ?
  229. os40LA quits
  230. OS 120 surpass w/ pump
  231. O.S. 61 SF with pump
  232. Flexible Exhaust Pipe with OS 120 surpass III?
  233. Part for OS FS-90 (non-surpass)
  234. OS RZV01B(p)
  235. 160 FX adjusting woes
  236. Pressure Regular on OS120 III with pump
  237. Initial L & H End Carb Settings for .46 SF ABC
  238. OS 10 LA Leaking fuel
  239. FS-70SII Loss of power
  240. O.s. Fs70s Plastic Part
  241. OS .46 V Rear Exhaust
  242. os 46fx back cover assembly??
  243. Os 140rx
  244. O.S. 61RF-P with os header & os tunepipe
  245. Collets and Flywheels for FS40-C
  246. Os .91 Fx
  247. OS 50 Surpass clikcs when turned over
  248. 61 FSR Circa 1975 OILS?
  249. What is the replacement engine for the Max 25 FP?

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