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  1. 25 FX Discontinued 2017
  2. OS 70 SZH question
  3. O.S. 120 II gemini exhaust extentions
  4. OS BGX 2.2 Head Gasket question, and Head and Back Plate torque specs please
  5. O.S. .61sf
  6. run a four strock using crankcase pressure or no pressure
  7. Different 1.20??
  8. 61 FX Bearing Replacement
  9. O.s. 10 / 15
  10. why does my Idle Needle need to be set so Lean ??
  11. trouble with replacing low speed needle
  12. OS CZ-2 Rebuild
  13. O.S. .46 SF Max Restorations; HELP!
  14. looking for a parts soource, OS .91 surpass II
  15. O.S. 120 FS Surpass (1) ?, Pump....... converting from pump to non pump....
  16. OS 46 FXi piston/connecting rod oreintation
  17. Engine quites after 30 seconds of idle
  18. O S FS 120 engine parts
  19. OS 91 Surpass II quits when igniter is removed
  20. OS FS 91II P (with pump)
  21. Oil content
  22. OS 15LA Engine Made In China?
  23. GT60 Backwards Start
  24. OS made in China?
  25. Recommended props for engine
  26. Os bx 1
  27. Help needed !!
  28. OS 120 Surpass Pump Timing?
  29. OS 1.60fx Piston Question
  30. OS FS91 and FS120 exhaust question
  31. os carbs
  32. O.S. .91fsr low RPMs
  33. engine compression
  34. os surpass fs 120
  35. 95 rv piston removel
  36. 46LA Carburetor Fuel Inlet Nozzle
  37. OS 91 FX Head on a OS 91 SZ-H Engine
  38. OS 120 Surpass Pump
  39. OS .52 FS Unusual Problem
  40. ball on hex screwdriver twisted off in socket head
  41. Torque curve for OS 1.08 FSR or OS .90 FSR ?
  42. OS .90 fs
  43. Os 46vd-p
  44. OS Sirius FR5 300 5 Cylinder lost compression!
  45. OS 91 FX Piston
  46. OS 55 ax problems
  47. OS GF30 adapter nut for Tru-Turn spinner
  48. OS 91 FX problems - need help
  49. OS 91 surpass making a strange popping sound.
  50. OS 91 SII (non-pumped) Idle Mixture Adjustment
  51. Any issues mounting an OS 110a inverted
  52. Os 61 sf abc
  53. 48 Surpass with APC 12x6
  54. 18x8 propeller for GGT15?
  55. O.S. 1.20 AX rebuild
  56. 95AX - Exhaust port on Engine is longer than the Extension?
  57. Scott J.
  58. O.S. Four Stroke Alpha engine discontinued
  59. A Dilemma about Propeller and RPM.
  60. OS 120III Pumped Cam/Cam follower alignment
  61. O.S. Walbro GT15 HZ carburetor part
  62. OS FS-120 Surpass II Rebuild Question
  63. OS FS-70S II parts question
  64. OS 91 FSII Pumped leaks from regulator
  65. OS FS26 valve cover
  66. OS 91 RZ compression
  67. Fuel for break-in of OS Four Stroke engines
  68. OS FL 70 Piston Removal
  69. GF30 Carb leaks around the rotor at the body is this normal?
  70. Origin of OS engines?
  71. OS 90FS and OS91 Surpass in a twin
  72. Upgrade FS-26 to FS-30?
  73. os 52fs coverplate
  74. os fs 200 regulator
  75. New OS GGT15
  76. OS FS-48 bearing questions
  77. Mufflers for older four-cycles
  78. OS 46AX Muffler question
  79. Cam timing on old 91 surpass
  80. 1988 O.S. .21 MAX EXR and O.S. .21 MAX RF Factory Needle Settings HELP?
  81. OS 61sf with a OS fueler system, carb and muffler
  82. Pegasus 240 Questions
  83. Noise?
  84. OS 91 FX at about mid throttle
  85. OS GT15 starting issue
  86. OS carburators
  87. O.S. FS-120SIII - Regulator System Reassembling - Howto
  88. Os rf/ sf
  89. Os 60fp (rn)
  90. on board glow
  91. Would camshaft timing one tooth out cause a F/S engine to run hot?
  92. OS 105HZ-R Engine
  93. 91 Four Stroke Surpass
  94. O.S. Max 77 VR DF
  95. O&S .61 four stroke sleeve removal
  96. OS .91-P Tricky Tune
  97. OS six cylinder Pegasus ??
  98. OS 55AX Piston removal
  99. OS 1.20 Supercharged Parts
  100. Bearing shields
  101. OS FT 300 twin
  102. OS120 FS Destroyed... PLEASE
  103. converting 91 FS II pumped to non pumped carb
  104. GF-30 engine mount
  105. OS 61 SF - Need Drive Washer
  106. poor running fs-30s
  107. OS 110 pumped cracked case
  108. How Low of Idle should a typical 61 FX Engine get?
  109. Can't remove muffler screws OS 32 SX
  110. Idle Screw will not stay set on a 60C Carb.
  111. O.S. FS .61 carb
  112. OS .46 FX Carb Replacement
  113. O.S. FS Series 91 Surpass Weird problem.
  114. Did os ever come with Perry carbs?
  115. T-6010 Tuned Silencer for OS 1.40 - using it on a 1.60
  116. OS 91 Surpass woodruff key
  117. OS Gemini 120 FT
  118. OS Parts for a Tower engine?
  119. GT33 big end bearing replacing
  120. Os 160 twin fuel set up
  121. OS55HZ Hyper Break In
  122. Is max 15cv-x
  123. Gf-30
  124. FT 120 GEMINI 1 glow engine twin cylinder
  125. OS 91 VR-DF square and roud head difference
  126. 95 AX, "mr. deadstick"
  127. O.S. 2B carb
  128. OS 91FX Piston orientation.
  129. OS FS 200 S, Oil in the crankcase
  130. OS 4-stroke Valve Sizes
  131. Os 91 fs
  132. OS FS-90 rear rocker
  133. Os 120 Surpass pumped stuck lifter
  134. OS Mufflers
  135. FT-160 rod removal help, please
  136. Help, I need exhast headder for OS .91FS
  137. OS 91S II Needle Valve
  138. 0% Nitro fuel on AX engines
  139. OS 160 Twin Prop extension
  140. OS FS@-56 fuel leaks at exhaust header pipe
  141. muffler presure heat
  142. Need Carburetor nozzle assembly for OS Max 40 fp
  143. Pressure Fitting O.S. 744 Muffler
  144. Bax, OS 70 FS Carb Question
  145. OS FS-120 Surpass Pumped (late '80s?) Trouble Running
  146. engine power loss
  147. OS 1.20 FS Poor Performance
  148. OS carb part...
  149. Why Do Model Engines Run Backwards Sometimes?
  150. Throttle Lever Assembly 1.08
  151. OS 1.40rx Temperature
  152. O.S. .25 AX
  153. O.S. 120 Surpass Failing after hot.
  154. FT-240 Cam/Crankshaft Timing
  155. MOVED: OS VALVE SPRING WORK IN MAGNUM MOTOR???
  156. MOVED: Marvel Mystery Oil?
  157. OS MAX 21 XZB
  158. os-20fp
  159. help with OS FX 1.60
  160. OS.65 LA fuel leak-help?
  161. OS SX-H Hyper Blowing glow plugs
  162. I can't find a con rod for my CZ.
  163. OS .25 AX
  164. Upgrade for a OS Max 60FP
  165. OS 91 surpass cam bearing removal
  166. Kano Sili Kroil with Silicone
  167. OS 50SX-H Non Hyper
  168. OS SX-H Hyper
  169. 1.08 FSR
  170. OS 10 Question
  171. O.S 18 tz pilot nut??
  172. O.S. 1.08 prop
  173. OS 48 4s question....
  174. OS 7D Carb.
  175. OS GT33 shaft dia 8mm vs 10mm prop hole
  176. OSFxi 46
  177. Parts needed for non surpass OS120fs HELP
  178. OS 120 Surpass Ver. 1 valve clearance
  179. I need help with my OS GT 33 installing it into 27% EDGE 540
  180. tuning v series OS 92 4 stroke
  181. OS Max FS 62V Four Stroke
  182. Old OS61 SE pattern engine
  183. os 55 ax
  184. Delete
  185. MOVED: OS 61FX Piston/Sleeve
  186. "New" OS 55AX ???
  187. Four stroke glow plug
  188. "O" rings for the pushrod tubes?
  189. fr5-300 oil vs fr7-420
  190. MOVED: OS .60 SR muffler
  191. OS FX 91 carb swap
  192. OS 65AX Cover Plate Gasket ???????
  193. OS Rear Bearings Wanted
  194. GT60
  195. O.S. 21VG(P) roto-start question???
  196. After Run Oil and LA Engines
  197. Mid 90's OS FS120 Surpass Break In
  198. FT-240 / FT-300 Connecting Rod
  199. OS52FS Idle Adjust
  200. Oil content in gas and glow??
  201. OS 1.08
  202. OS 155 P
  203. MOVED: OS GT 33 GAS ENGINE
  204. OS TWIN FT 120 GEMINI CAM TIMING
  205. OS TWIN FT 120 GEMINI CAM SETTINGS
  206. OS 95 Help
  207. OS 75AX rebuild- question for Bax
  208. 55AX mid throttle issues, fixed I think
  209. After Run Oil into a 4 Stroke
  210. O.S. Gemini 120 twin
  211. OS 95V FS Prop Choice
  212. Engine Mount dimensions needed for OS FS 155-a
  213. Problems with O.S. 91 Surpass II w/pump
  214. 55 ax: Bubbles? Help Diagnose, Please!
  215. OS Surpass 91
  216. Stripped back plate threads
  217. 120 Surpass won't Start after rebuild
  218. FS-120 Connecting Rod
  219. After-Run Oil Chemical Question
  220. 55 ax enough power?
  221. front seal drips
  222. O.S. .25 SF (circa '92) Manual or Part # Needed
  223. inverted four stroke
  224. Bad O-Rings on two 61FX Engines.
  225. 1.20 AX
  226. os 46AX II Carburetor
  227. Engine Information
  228. OS FS-60 Carb
  229. Inverted OS 91 4 Stroke Surging
  230. OS 46AX Shaft Play
  231. OS .91FS Surpass I back plate
  232. OS70s throttle arm ring disconnect
  233. os46AX high speed needle
  234. MOVED: O.S. GT33 Muffler
  235. Purchase GT gas engines without mufflers?
  236. OS 91 FS Muffler
  237. OS FS-90 NON SURPASS UNKNOWN PARTS
  238. OS MAX .25 carb/throttle action
  239. OS FS 70 Ultimate
  240. OS 55AX Noisy
  241. OS91 4 Stroke Compession
  242. Unrun .75 AX
  243. OS 110 driveshaft slop
  244. OS120AX quit & wouldn't restart
  245. HELP RE: OS 40 FP NEEDLE VALVE ASSEMBLY
  246. AX Motors in general
  247. OS 120 AX and black exhaust oil
  248. OS 91 Surpass valve keeper?
  249. OS 40 FSR
  250. Is this an older OS Carburetor ?