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  1. OS 10 LA Leaking fuel
  2. FS-70SII Loss of power
  3. O.s. Fs70s Plastic Part
  4. OS .46 V Rear Exhaust
  5. os 46fx back cover assembly??
  6. Os 140rx
  7. O.S. 61RF-P with os header & os tunepipe
  8. Collets and Flywheels for FS40-C
  9. Os .91 Fx
  10. OS 50 Surpass clikcs when turned over
  11. 61 FSR Circa 1975 OILS?
  12. What is the replacement engine for the Max 25 FP?
  13. OS 91 FX in UK
  14. .91 2 Stroke
  15. Back Plate Mounts
  16. head bolts
  17. Which is it?
  18. Identifying OS Max 61 SX-H Subtype
  19. glow plug for 46 fx
  20. OS engine part needed
  21. Factory carb settings on 46fx?
  22. OS Max 40 sr NEED PISTON RING
  23. Os 10 La
  24. Engine Dissassebly Guide
  25. OS FT 160 Carb
  26. Will the crank from my .12 CV work in my new .15 CV-X ??
  27. Old model fx 120 surpass W/ #12 pump
  28. Online source for OS Engine Parts?
  29. OS 46 FX Carb Won't Close Completely
  30. OS50 SX-H 5B carb
  31. Pump priming?
  32. Mid throttle loads up OS160fx
  33. os .28
  34. OS 61 FX needle valve/fuel inlet positioning
  35. Back (cover) plate of 160Fx
  36. Crankshaft Extension for the OS 52 four stroke
  37. .61 FX peeling cylinder
  38. OS Max-H 60 (Max H60) parts needed
  39. OS 46FX Liner problems
  40. FF-240 In need of Manual?
  41. OS FS 120S SP Supercharged
  42. Looking for info on this .20
  43. FS-120 III w/pump silencer
  44. Questions for OS 120 Surpass III
  45. FS 120 pump output
  46. old os 15 max idle prob.
  47. OS 46 FX torque Curve
  48. O.S. 61 max sf
  49. Quick ? on four strokes
  50. OS 120 Thrust
  51. Set Screws in the High Speed Needle
  52. Is it worth fixing an old OS20??
  53. Frustration with 91FX
  54. Need Tuning Help OS MAX CV-X .15
  55. OS 25LA cylinder
  56. what series os 120 surpass
  57. older os120 surpass w/pump
  58. Os 1.40rx ?
  59. 46FX and 32SX break-in : Manuals says 4 cycle them / AmCross says that's a mistake???
  60. OS FT120 exhaust pipes
  61. OS .52 4 stroke
  62. Pump for OS 1.60FX?
  63. Os La 46 Muffler Extention...help!!!!
  64. Os .10 Fp
  65. Metric threads
  66. dual plug head for 1.40 RX
  67. OS .91 FS valve spring collapsed
  68. How to tell if V engine is really DF +
  69. Old OS questions
  70. OS 46 FX Mounting orientation and exaust question
  71. will it fit
  72. FS91 II w/pump question.
  73. O.S. really needs to make a .75 2 Stroke
  74. engine questions?
  75. Os 48 Surpass
  76. Tank pressure with OS160FT
  77. Help with identification of old OS .25 engine
  78. bearings for OS 25FSR + 25F
  79. 13x8 Master Air Screw 3-blade prop for FS91 II
  80. Looking for OS 40SF ABC Specs
  81. OS .46 Idle Mixture
  82. O.s. 65 La
  83. Adapter for flex exhaust
  84. Os .91fx Abc???
  85. Questions 140rx
  86. OS FS 120 Non Surpass
  87. Relocating the crankcase breather on my OLD FS-40...
  88. OS SF 61 carb
  89. Os 10 Fp
  90. OS FT-160 twin
  91. os 160 tuned pipe
  92. OS 50SX-H Ring
  93. OS 1.40RX help
  94. OS .46FX not running well. Outside temp the problem?
  95. Does Slimline make Pitts Muffler W/Smoke for OS 160
  96. Os Max 40 Sr
  97. OS 90 / 91 FS bearing replacement proc.
  98. ? about OS 40LA
  99. OS91 4/c backfiring on each flip to start
  100. os 91 'c' spec heli engine
  101. os .35 help needed
  102. Service question
  103. Os 160
  104. Need Piston Ring for OS 160FX
  105. OS 25 quits
  106. .50 SX Ring engine
  107. FS 91 V FS 91 pumped
  108. Need help with fuel for O.S. 91 Surpass
  109. 46 FX Different pistons?
  110. OS 91 Surpass I
  111. is this OS 120 surpass I -sp running?
  112. Low end needle drift possible ?
  113. OS 91 4 stroke bearings.
  114. Os 140 Fi
  115. OS 91 4 Stroke Carb Settings
  116. Trying to find a rear bearing for 46fx...ARRRGH!!
  117. OS .90 FSR Specs/Manual
  118. OS 7L carb adjustment
  119. Clockwise engine
  120. OS .25fx funny noise
  121. O.s.91 4stroke
  122. Another 120 Question
  123. Futaba FP-T7UAP PCM/PPM
  124. OS 50 Reviews
  125. Original 120FS engine
  126. compression ratio for os 46 fx ?
  127. 61FX rpm on ground
  128. problems with my new os 70, 4 stroke
  129. 61?
  130. 91 FX Question
  131. FS-91SII-P Muffler?
  132. Os Ft 1.20
  133. frozen barrels on #21 carbs
  134. os .61fx modification
  135. OS 120 pumped won't run
  136. carburetor body
  137. FS-30 Surpass weight
  138. 46FX runnning a 3-Blade Prop
  139. OS .91-VR Ducted Fan
  140. Os Ft160
  141. O.S. 91fx
  142. O.S. 50 SX carb
  143. FS-120 Surpass II pumped
  144. OS 70 Broken valve spring
  145. Os 160
  146. Os .61fx
  147. OS warranty and fuel Q.
  148. OS Max .10 Starting
  149. Os .91 Fx
  150. disc. engine
  151. OS 91 FS w/pump
  152. OS 1.60 crankcase tap
  153. 120 surpass W/pump
  154. OS Carb on TT Pro 46
  155. OS 120 Surpass
  156. Cline and Associates Regulators
  157. OS 90 4 stroke engine
  158. Os 61 Rf-p
  159. Schneurle porting
  160. OS 90FS Manual
  161. OS .46SF parts
  162. OS 160 junk???
  163. OS Max 30
  164. 46 max idle
  165. New OS 46FX Peeling Question
  166. 40 LA Changes
  167. Surpass 70MKII Inverted
  168. Upside down?
  169. O.S. 26 Four Stroke
  170. Engine Spec
  171. max rpm for 61fx
  172. #21 Carbs
  173. Dirt Damage
  174. Leaks
  175. os 46 fx max HELP
  176. OS-52 four stroke
  177. OS 160FX Stock or Pitts Muffler
  178. Fx 160 in G202 GP
  179. Inverted OS 25 fx (4 engines, B-17)
  180. OS 120 Surpass II
  181. Os .35 FP--need a head gasket.
  182. Os 61 Sf
  183. Tower muffler for 46FX
  184. Os50
  185. Tank level/clunk for a .40 FP
  186. Ft-300
  187. Muffler for OS 160 fx
  188. Surpass 120 w/pump
  189. Pumped FS 70?
  190. 46 FX Exhaust
  191. Air Bleed Adjustment LA 46
  192. 1.6FX - NIB crank won't turn
  193. Submerged O.S. F.S. 52 Four Stroke
  194. OS 1.60FX power?
  195. Pumped .61SF fuel line connections
  196. FS 90 backfire and needle valve problems
  197. OS 160 fx port timing
  198. os fx .61, pitts problem
  199. os surpass 70
  200. Carb setting on 21RG
  201. OS 25 needs more grunt
  202. Super heated OS .91FX, AMC:Help!
  203. Ziroli B-25 (101) approx 35 lbs
  204. Os .91fx
  205. My OS 10 wont run right
  206. HELP! My engine won't run!
  207. os52 exhaust
  208. O.S 120 II pumped
  209. More RPM's
  210. FX 46 making me nutz
  211. 18x6W or 20x6 for 1.60 FX
  212. 40LA Muffler fasteners
  213. C/L to RC conversion
  214. OS 46 & 61 SF ring replacement
  215. OS 70 Surpass
  216. FS-91 Surpass
  217. What is the expected life of an FX 46?
  218. rebuilding
  219. OS FS-70 repair
  220. OS 32 F Helicopter
  221. OS .46fx help....
  222. Is there a new OS 91???
  223. What size is the exhaust thread on OS 91 Surpass
  224. Cost of estimate ?
  225. Should I not repair my os 46sf?
  226. Need help on OS-91 FS II (no pump)
  227. 60 fx cyl peeling
  228. OS 70 SZ no mid range mixture
  229. Instruction Manual 7m Carb.
  230. Gummed up engines
  231. O.S. 46 LA Question
  232. FS-120s III
  233. 46 fx quits
  234. O.S. 1.6FX pressure tap-HELP!
  235. 46fx-h
  236. 46fx-h
  237. OS 160 FX setup
  238. .91 FX Prop selection
  239. Where is Ann Marie?????????????
  240. Fuel Pump
  241. OS 160 Twin exhaust extenders
  242. OS 46FX peeling
  243. Ring for 50SX?
  244. FS needle settings
  245. counter rotating engines
  246. 48 Surpass
  247. Os 30fs
  248. Pressure nipples
  249. OS 15 FP crank thread size
  250. Life Expectancy of the OS 50 SXH

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