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  1. OS FS .40C Temps
  2. O.S. FS surpass II conversion from pump to non-pump
  3. Surpass II wont't run
  4. 91FX dimensions needed (not in manual)
  5. OS 140 with 60 pipe
  6. OS 120 Surpass II pumped won't run at full throttle.
  7. 61 ABC problems
  8. carburetor OS#60K
  9. OS 40 SF ABC throttle transition
  10. BGX 3500 Help!!!!!!
  11. HEATED owner of an OVERHEATED 91FX
  12. .46Fx
  13. 40 VF
  14. 0S .46SF - I want more power
  15. 91 SX-H timing info needed
  16. OS max 91 four stroke...no power or compression
  17. OS 1.40 prop
  18. .61 FX wont Idle, please help
  19. Gasket
  20. Setting high speed needle valve!
  21. Probs with .40fx
  22. 60J Carb
  23. os 120 surpass II w/pump
  24. OS50 XXrich@1/4 stick
  25. Os .15 Fp
  26. When to rebiuld?
  27. OS .10 Head and Back Plate Screw Sizes
  28. Need a new crank for and O.S.
  29. Removing Bearings and Crankshaft from 40 SF ABC
  30. os 91fs
  31. Os 15
  32. OS Max FP .40 Manual
  33. Os 50 Sxh
  34. Looking for manual
  35. OS 120 Carb
  36. Need OS part number...
  37. OS-30 weight spec is wrong!
  38. O.S. Surpass 30
  39. OS91 C-Spec
  40. 140RX spitting bearing!!!
  41. OS Engine Specs???
  42. fs 60 open rocker
  43. Engine Purchase Questions
  44. O.S. Buggy Engine, Can I convert to Pull start?
  45. Should I replace the case on a os 61?
  46. OS FSR/SF Parts Interchange
  47. OS 140 Rx storage
  48. OS 70 leaking???
  49. .15 Fp
  50. OS 52 4 cyl.
  51. os40la
  52. O.s. 61 Sf Prop Nut Size
  53. Os 91 Fs
  54. Os21 Vz-r
  55. os FX silinder pilling ,is this still hapening Cause i have one that did it with only
  56. OS Max 1.2 FS Surpass II pumped
  57. 120 4cycle w/pump
  58. os40fx vs os fs52s
  59. OS 120 Surpass III w/ pump wont advance from idle
  60. .15cvx
  61. O.S. .28f w/2h carb. Why is the head......
  62. old os 120fs
  63. Amcross, somebody... questions about .46 FX break in ...
  64. Marine engine OS 91 VRM, who knows about existance ?
  65. os40LA quits
  66. OS 120 surpass w/ pump
  67. O.S. 61 SF with pump
  68. Flexible Exhaust Pipe with OS 120 surpass III?
  69. Part for OS FS-90 (non-surpass)
  70. OS RZV01B(p)
  71. 160 FX adjusting woes
  72. Pressure Regular on OS120 III with pump
  73. Initial L & H End Carb Settings for .46 SF ABC
  74. OS 10 LA Leaking fuel
  75. FS-70SII Loss of power
  76. O.s. Fs70s Plastic Part
  77. OS .46 V Rear Exhaust
  78. os 46fx back cover assembly??
  79. Os 140rx
  80. O.S. 61RF-P with os header & os tunepipe
  81. Collets and Flywheels for FS40-C
  82. Os .91 Fx
  83. OS 50 Surpass clikcs when turned over
  84. 61 FSR Circa 1975 OILS?
  85. What is the replacement engine for the Max 25 FP?
  86. OS 91 FX in UK
  87. .91 2 Stroke
  88. Back Plate Mounts
  89. head bolts
  90. Which is it?
  91. Identifying OS Max 61 SX-H Subtype
  92. glow plug for 46 fx
  93. OS engine part needed
  94. Factory carb settings on 46fx?
  95. OS Max 40 sr NEED PISTON RING
  96. Os 10 La
  97. Engine Dissassebly Guide
  98. OS FT 160 Carb
  99. Will the crank from my .12 CV work in my new .15 CV-X ??
  100. Old model fx 120 surpass W/ #12 pump
  101. Online source for OS Engine Parts?
  102. OS 46 FX Carb Won't Close Completely
  103. OS50 SX-H 5B carb
  104. Pump priming?
  105. Mid throttle loads up OS160fx
  106. os .28
  107. OS 61 FX needle valve/fuel inlet positioning
  108. Back (cover) plate of 160Fx
  109. Crankshaft Extension for the OS 52 four stroke
  110. .61 FX peeling cylinder
  111. OS Max-H 60 (Max H60) parts needed
  112. OS 46FX Liner problems
  113. FF-240 In need of Manual?
  114. OS FS 120S SP Supercharged
  115. Looking for info on this .20
  116. FS-120 III w/pump silencer
  117. Questions for OS 120 Surpass III
  118. FS 120 pump output
  119. old os 15 max idle prob.
  120. OS 46 FX torque Curve
  121. O.S. 61 max sf
  122. Quick ? on four strokes
  123. OS 120 Thrust
  124. Set Screws in the High Speed Needle
  125. Is it worth fixing an old OS20??
  126. Frustration with 91FX
  127. Need Tuning Help OS MAX CV-X .15
  128. OS 25LA cylinder
  129. what series os 120 surpass
  130. older os120 surpass w/pump
  131. Os 1.40rx ?
  132. 46FX and 32SX break-in : Manuals says 4 cycle them / AmCross says that's a mistake???
  133. OS FT120 exhaust pipes
  134. OS .52 4 stroke
  135. Pump for OS 1.60FX?
  136. Os La 46 Muffler Extention...help!!!!
  137. Os .10 Fp
  138. Metric threads
  139. dual plug head for 1.40 RX
  140. OS .91 FS valve spring collapsed
  141. How to tell if V engine is really DF +
  142. Old OS questions
  143. OS 46 FX Mounting orientation and exaust question
  144. will it fit
  145. FS91 II w/pump question.
  146. O.S. really needs to make a .75 2 Stroke
  147. engine questions?
  148. Os 48 Surpass
  149. Tank pressure with OS160FT
  150. Help with identification of old OS .25 engine
  151. bearings for OS 25FSR + 25F
  152. 13x8 Master Air Screw 3-blade prop for FS91 II
  153. Looking for OS 40SF ABC Specs
  154. OS .46 Idle Mixture
  155. O.s. 65 La
  156. Adapter for flex exhaust
  157. Os .91fx Abc???
  158. Questions 140rx
  159. OS FS 120 Non Surpass
  160. Relocating the crankcase breather on my OLD FS-40...
  161. OS SF 61 carb
  162. Os 10 Fp
  163. OS FT-160 twin
  164. os 160 tuned pipe
  165. OS 50SX-H Ring
  166. OS 1.40RX help
  167. OS .46FX not running well. Outside temp the problem?
  168. Does Slimline make Pitts Muffler W/Smoke for OS 160
  169. Os Max 40 Sr
  170. OS 90 / 91 FS bearing replacement proc.
  171. ? about OS 40LA
  172. OS91 4/c backfiring on each flip to start
  173. os 91 'c' spec heli engine
  174. os .35 help needed
  175. Service question
  176. Os 160
  177. Need Piston Ring for OS 160FX
  178. OS 25 quits
  179. .50 SX Ring engine
  180. FS 91 V FS 91 pumped
  181. Need help with fuel for O.S. 91 Surpass
  182. 46 FX Different pistons?
  183. OS 91 Surpass I
  184. is this OS 120 surpass I -sp running?
  185. Low end needle drift possible ?
  186. OS 91 4 stroke bearings.
  187. Os 140 Fi
  188. OS 91 4 Stroke Carb Settings
  189. Trying to find a rear bearing for 46fx...ARRRGH!!
  190. OS .90 FSR Specs/Manual
  191. OS 7L carb adjustment
  192. Clockwise engine
  193. OS .25fx funny noise
  194. O.s.91 4stroke
  195. Another 120 Question
  196. Futaba FP-T7UAP PCM/PPM
  197. OS 50 Reviews
  198. Original 120FS engine
  199. compression ratio for os 46 fx ?
  200. 61FX rpm on ground
  201. problems with my new os 70, 4 stroke
  202. 61?
  203. 91 FX Question
  204. FS-91SII-P Muffler?
  205. Os Ft 1.20
  206. frozen barrels on #21 carbs
  207. os .61fx modification
  208. OS 120 pumped won't run
  209. carburetor body
  210. FS-30 Surpass weight
  211. 46FX runnning a 3-Blade Prop
  212. OS .91-VR Ducted Fan
  213. Os Ft160
  214. O.S. 91fx
  215. O.S. 50 SX carb
  216. FS-120 Surpass II pumped
  217. OS 70 Broken valve spring
  218. Os 160
  219. Os .61fx
  220. OS warranty and fuel Q.
  221. OS Max .10 Starting
  222. Os .91 Fx
  223. disc. engine
  224. OS 91 FS w/pump
  225. OS 1.60 crankcase tap
  226. 120 surpass W/pump
  227. OS Carb on TT Pro 46
  228. OS 120 Surpass
  229. Cline and Associates Regulators
  230. OS 90 4 stroke engine
  231. Os 61 Rf-p
  232. Schneurle porting
  233. OS 90FS Manual
  234. OS .46SF parts
  235. OS 160 junk???
  236. OS Max 30
  237. 46 max idle
  238. New OS 46FX Peeling Question
  239. 40 LA Changes
  240. Surpass 70MKII Inverted
  241. Upside down?
  242. O.S. 26 Four Stroke
  243. Engine Spec
  244. max rpm for 61fx
  245. #21 Carbs
  246. Dirt Damage
  247. Leaks
  248. os 46 fx max HELP
  249. OS-52 four stroke
  250. OS 160FX Stock or Pitts Muffler