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  1. OS91 C-Spec
  2. 140RX spitting bearing!!!
  3. OS Engine Specs???
  4. fs 60 open rocker
  5. Engine Purchase Questions
  6. O.S. Buggy Engine, Can I convert to Pull start?
  7. Should I replace the case on a os 61?
  8. OS FSR/SF Parts Interchange
  9. OS 140 Rx storage
  10. OS 70 leaking???
  11. .15 Fp
  12. OS 52 4 cyl.
  13. os40la
  14. O.s. 61 Sf Prop Nut Size
  15. Os 91 Fs
  16. Os21 Vz-r
  17. os FX silinder pilling ,is this still hapening Cause i have one that did it with only
  18. OS Max 1.2 FS Surpass II pumped
  19. 120 4cycle w/pump
  20. os40fx vs os fs52s
  21. OS 120 Surpass III w/ pump wont advance from idle
  22. .15cvx
  23. O.S. .28f w/2h carb. Why is the head......
  24. old os 120fs
  25. Amcross, somebody... questions about .46 FX break in ...
  26. Marine engine OS 91 VRM, who knows about existance ?
  27. os40LA quits
  28. OS 120 surpass w/ pump
  29. O.S. 61 SF with pump
  30. Flexible Exhaust Pipe with OS 120 surpass III?
  31. Part for OS FS-90 (non-surpass)
  32. OS RZV01B(p)
  33. 160 FX adjusting woes
  34. Pressure Regular on OS120 III with pump
  35. Initial L & H End Carb Settings for .46 SF ABC
  36. OS 10 LA Leaking fuel
  37. FS-70SII Loss of power
  38. O.s. Fs70s Plastic Part
  39. OS .46 V Rear Exhaust
  40. os 46fx back cover assembly??
  41. Os 140rx
  42. O.S. 61RF-P with os header & os tunepipe
  43. Collets and Flywheels for FS40-C
  44. Os .91 Fx
  45. OS 50 Surpass clikcs when turned over
  46. 61 FSR Circa 1975 OILS?
  47. What is the replacement engine for the Max 25 FP?
  48. OS 91 FX in UK
  49. .91 2 Stroke
  50. Back Plate Mounts
  51. head bolts
  52. Which is it?
  53. Identifying OS Max 61 SX-H Subtype
  54. glow plug for 46 fx
  55. OS engine part needed
  56. Factory carb settings on 46fx?
  57. OS Max 40 sr NEED PISTON RING
  58. Os 10 La
  59. Engine Dissassebly Guide
  60. OS FT 160 Carb
  61. Will the crank from my .12 CV work in my new .15 CV-X ??
  62. Old model fx 120 surpass W/ #12 pump
  63. Online source for OS Engine Parts?
  64. OS 46 FX Carb Won't Close Completely
  65. OS50 SX-H 5B carb
  66. Pump priming?
  67. Mid throttle loads up OS160fx
  68. os .28
  69. OS 61 FX needle valve/fuel inlet positioning
  70. Back (cover) plate of 160Fx
  71. Crankshaft Extension for the OS 52 four stroke
  72. .61 FX peeling cylinder
  73. OS Max-H 60 (Max H60) parts needed
  74. OS 46FX Liner problems
  75. FF-240 In need of Manual?
  76. OS FS 120S SP Supercharged
  77. Looking for info on this .20
  78. FS-120 III w/pump silencer
  79. Questions for OS 120 Surpass III
  80. FS 120 pump output
  81. old os 15 max idle prob.
  82. OS 46 FX torque Curve
  83. O.S. 61 max sf
  84. Quick ? on four strokes
  85. OS 120 Thrust
  86. Set Screws in the High Speed Needle
  87. Is it worth fixing an old OS20??
  88. Frustration with 91FX
  89. Need Tuning Help OS MAX CV-X .15
  90. OS 25LA cylinder
  91. what series os 120 surpass
  92. older os120 surpass w/pump
  93. Os 1.40rx ?
  94. 46FX and 32SX break-in : Manuals says 4 cycle them / AmCross says that's a mistake???
  95. OS FT120 exhaust pipes
  96. OS .52 4 stroke
  97. Pump for OS 1.60FX?
  98. Os La 46 Muffler Extention...help!!!!
  99. Os .10 Fp
  100. Metric threads
  101. dual plug head for 1.40 RX
  102. OS .91 FS valve spring collapsed
  103. How to tell if V engine is really DF +
  104. Old OS questions
  105. OS 46 FX Mounting orientation and exaust question
  106. will it fit
  107. FS91 II w/pump question.
  108. O.S. really needs to make a .75 2 Stroke
  109. engine questions?
  110. Os 48 Surpass
  111. Tank pressure with OS160FT
  112. Help with identification of old OS .25 engine
  113. bearings for OS 25FSR + 25F
  114. 13x8 Master Air Screw 3-blade prop for FS91 II
  115. Looking for OS 40SF ABC Specs
  116. OS .46 Idle Mixture
  117. O.s. 65 La
  118. Adapter for flex exhaust
  119. Os .91fx Abc???
  120. Questions 140rx
  121. OS FS 120 Non Surpass
  122. Relocating the crankcase breather on my OLD FS-40...
  123. OS SF 61 carb
  124. Os 10 Fp
  125. OS FT-160 twin
  126. os 160 tuned pipe
  127. OS 50SX-H Ring
  128. OS 1.40RX help
  129. OS .46FX not running well. Outside temp the problem?
  130. Does Slimline make Pitts Muffler W/Smoke for OS 160
  131. Os Max 40 Sr
  132. OS 90 / 91 FS bearing replacement proc.
  133. ? about OS 40LA
  134. OS91 4/c backfiring on each flip to start
  135. os 91 'c' spec heli engine
  136. os .35 help needed
  137. Service question
  138. Os 160
  139. Need Piston Ring for OS 160FX
  140. OS 25 quits
  141. .50 SX Ring engine
  142. FS 91 V FS 91 pumped
  143. Need help with fuel for O.S. 91 Surpass
  144. 46 FX Different pistons?
  145. OS 91 Surpass I
  146. is this OS 120 surpass I -sp running?
  147. Low end needle drift possible ?
  148. OS 91 4 stroke bearings.
  149. Os 140 Fi
  150. OS 91 4 Stroke Carb Settings
  151. Trying to find a rear bearing for 46fx...ARRRGH!!
  152. OS .90 FSR Specs/Manual
  153. OS 7L carb adjustment
  154. Clockwise engine
  155. OS .25fx funny noise
  156. O.s.91 4stroke
  157. Another 120 Question
  158. Futaba FP-T7UAP PCM/PPM
  159. OS 50 Reviews
  160. Original 120FS engine
  161. compression ratio for os 46 fx ?
  162. 61FX rpm on ground
  163. problems with my new os 70, 4 stroke
  164. 61?
  165. 91 FX Question
  166. FS-91SII-P Muffler?
  167. Os Ft 1.20
  168. frozen barrels on #21 carbs
  169. os .61fx modification
  170. OS 120 pumped won't run
  171. carburetor body
  172. FS-30 Surpass weight
  173. 46FX runnning a 3-Blade Prop
  174. OS .91-VR Ducted Fan
  175. Os Ft160
  176. O.S. 91fx
  177. O.S. 50 SX carb
  178. FS-120 Surpass II pumped
  179. OS 70 Broken valve spring
  180. Os 160
  181. Os .61fx
  182. OS warranty and fuel Q.
  183. OS Max .10 Starting
  184. Os .91 Fx
  185. disc. engine
  186. OS 91 FS w/pump
  187. OS 1.60 crankcase tap
  188. 120 surpass W/pump
  189. OS Carb on TT Pro 46
  190. OS 120 Surpass
  191. Cline and Associates Regulators
  192. OS 90 4 stroke engine
  193. Os 61 Rf-p
  194. Schneurle porting
  195. OS 90FS Manual
  196. OS .46SF parts
  197. OS 160 junk???
  198. OS Max 30
  199. 46 max idle
  200. New OS 46FX Peeling Question
  201. 40 LA Changes
  202. Surpass 70MKII Inverted
  203. Upside down?
  204. O.S. 26 Four Stroke
  205. Engine Spec
  206. max rpm for 61fx
  207. #21 Carbs
  208. Dirt Damage
  209. Leaks
  210. os 46 fx max HELP
  211. OS-52 four stroke
  212. OS 160FX Stock or Pitts Muffler
  213. Fx 160 in G202 GP
  214. Inverted OS 25 fx (4 engines, B-17)
  215. OS 120 Surpass II
  216. Os .35 FP--need a head gasket.
  217. Os 61 Sf
  218. Tower muffler for 46FX
  219. Os50
  220. Tank level/clunk for a .40 FP
  221. Ft-300
  222. Muffler for OS 160 fx
  223. Surpass 120 w/pump
  224. Pumped FS 70?
  225. 46 FX Exhaust
  226. Air Bleed Adjustment LA 46
  227. 1.6FX - NIB crank won't turn
  228. Submerged O.S. F.S. 52 Four Stroke
  229. OS 1.60FX power?
  230. Pumped .61SF fuel line connections
  231. FS 90 backfire and needle valve problems
  232. OS 160 fx port timing
  233. os fx .61, pitts problem
  234. os surpass 70
  235. Carb setting on 21RG
  236. OS 25 needs more grunt
  237. Super heated OS .91FX, AMC:Help!
  238. Ziroli B-25 (101) approx 35 lbs
  239. Os .91fx
  240. My OS 10 wont run right
  241. HELP! My engine won't run!
  242. os52 exhaust
  243. O.S 120 II pumped
  244. More RPM's
  245. FX 46 making me nutz
  246. 18x6W or 20x6 for 1.60 FX
  247. 40LA Muffler fasteners
  248. C/L to RC conversion
  249. OS 46 & 61 SF ring replacement
  250. OS 70 Surpass

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