View Full Version : O.S. Engines Support



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  1. OS 300 Broken Crankshaft
  2. OS FS-120 Surpass loose muffler
  3. OS 18TM Issue
  4. 30VG rotostart problems
  5. 70 FS
  6. OS 91 Vrdf exhaust manifold availability..
  7. So Max 61 FSR ABC Drive Washer
  8. Hot!! OS 30VG
  9. O.S. 160 FX on a Macchi MC 202
  10. Remove piston OS 120
  11. OS FS 20
  12. Stuck wrist pin on OS fs 70
  13. O.S Max .32 SX-H
  14. engine size and type selection
  15. O.S. 91fx Inverted tips
  16. O.S. Max FX 91 won't pop...need help
  17. OS 91 Surpass II w/pump
  18. Os 46 SF ABC
  19. O.S 90 Surpass valve timing
  20. OS 12TR(P)-T Idleing problems
  21. OS FS 91 Surpass 1
  22. abnormal engine swap plane/car
  23. OS 61 FSR timing
  24. 55AX rebuild help
  25. os fs 30 problems
  26. FS 91 SII FI HELP!!!! anyone who knows
  27. Old O.S. 60SR Parts
  28. O.S. 55AX vs. 61FX?
  29. BGX
  30. OS FS200S P
  31. Cold weather break-in of 55AX
  32. clutch bell retaining screw
  33. ft300 connecting rods
  34. os 35 ax header pipe
  35. Tamiya/OS FS-18SR problems
  36. OS Max H 80 engine
  37. OS 18cvr / exhaust
  38. Old OS 90 2-stroke
  39. os160 problem
  40. FS200 Exhust thread size
  41. OS 91 heli engine
  42. O.S. 120 FS pumped
  43. OS 120 FS w/o pump initial Idle setting
  44. OS 21TM Glow Plug question
  45. 46AX
  46. 18TZ Breakin and tuning help
  47. OS .30 Motor Problems
  48. Starts up and then cuts off
  49. OS 21 V Spec pipe?
  50. OS DF question
  51. does os make a ez start engine?
  52. OS fs-40 - really old!
  53. OS 61VR-M Engine
  54. OS 200 Muffler/pipe options?
  55. O.S. 120 AX
  56. os 70 surpass parts
  57. OS FS91 Surpass II pump issue
  58. Carb secure screw question
  59. MOVED: OS 200fs Cline or Perry?
  60. 70 4 stroke
  61. FSa Lineup
  62. FX 1.60 annoying problem
  63. OS 91 FXGlow plug
  64. FX and AX ...
  65. 55 AX carb disassembly
  66. APC 13-4W to big for 55AX?
  67. OS 7L carb reassembly?
  68. OS 120FS II pumped
  69. Letters on bottom of mounting flange
  70. Another AX46 Question
  71. OS 46 AX
  72. O.S. 61 RF
  73. O.S. ft160 twin Crankcase slime routing/burning?
  74. OS61SF carburettor problem
  75. How do I take my carb off?
  76. 18tz(P) crank into a 18tm
  77. Need OS Max 40 SR Muffler
  78. MOVED: 160fx max and smoke?
  79. OS 61 SF ABC
  80. Stock OS 160 muffler in Yak
  81. os200-p fuel tube connection ?
  82. OS 120 Surpass III losing power
  83. OS 61 Max Fp Fuel Issue
  84. O.S. 120 fs rebuild
  85. os bgx 3500 break in?????
  86. FS-120 Series II Pumped surging
  87. Fuel for Os .21 RF-B
  88. OS FS 91 SURPASS
  89. Will a new 91 w/pump bolt up where a 91 Surpass w/o pump was?
  90. vspec .21 problem
  91. OS21TM Question.
  92. OS 160 AX?
  93. .91 FX straight pipe??
  94. os 300 enought power?
  95. S.O.S. OS FS-40 Surpass camshaft questions. Help needed!!!
  96. engine mount specs
  97. OS 18 TZ
  98. OS 2.00 Lackluster performance
  99. Obsolete OS Engine Information
  100. OS 61VF ABC GS A-1
  101. OS .61 4 stroke
  102. 18TZ Can't go past 1/2 throttle
  103. OS FS-70S needles bottoming out
  104. .91 FX Leaks Fuel at Drive Hub
  105. FS61 Silencer
  106. OS-46SF "Reversed"?
  107. OS IL-300 4 Cylinder - Fuel Setup
  108. OS .46AX running too rich
  109. Max distance between OS91FX and tank
  110. OS 55AX engine & plug life?
  111. FS-26 AND FS-30
  112. Stock 91FX muffler Q
  113. Break in?
  114. OS200-P getting 6500rpm ONLY....
  115. Os 55 Ax dying
  116. OS 3500 BGX-1 problem
  117. 91 Surpass metallic engine knock at half throttle?
  118. v-spec issues
  119. PD-04 Diaphragm Fuel Pump
  120. FS 40 Stuck valves
  121. OS 1.20 4-Stroke Questions
  122. .55ax noise
  123. OS MAx .10 ?
  124. OS FS 91 w/pump peak RPM
  125. os91fx and os61fx
  126. OS 25 FX
  127. will there be any new OS engine soon?
  128. os .18
  129. Figured it out..... Not worth reading
  130. OS FT-160 leaking fuel
  131. MOVED: Cline vs. Perry vs. Iron Bay
  132. 91 FX backplate ?
  133. Best replacement for OS .46 AX
  134. 30vg warranty
  135. OS 120 AX, No response to needle valve adjustments
  136. os 91 fx rebuild
  137. Spin start adapter for OS .21 V-spec
  138. MOVED: Good .12 engine
  139. exhaust on 55ax
  140. Letters code below mounting lugs
  141. OS 91 RUNNING GOOFY
  142. what is a os cz hirobo
  143. Ideal .55ax rpm range
  144. O.S. CV-R bump start conversion
  145. delete
  146. 1.60 prop sizes
  147. OS .52 & .56 exhaust thread pitch.
  148. os 120ax + remote tank = :(
  149. os 120ax
  150. exaust 4 stroke
  151. O.S. 61 F/S Touchy high speed needle
  152. Old but new OS 91 surpass with choke valve
  153. The Amazing 120AX
  154. Need upgrade carb on OS-FL70
  155. Os FS30 muffler and needle valve extensions
  156. 91 surpass prop size
  157. torque specs
  158. FS-200s and FS-200u; what's the difference?
  159. OS Surpass ii idle problem
  160. MOVED: O.S. FS 120
  161. MOVED: OS 200 for Pattern?
  162. OS FS-48 Replacement Head
  163. *OS 120AX & Nitro Content*
  164. Inverted OS FL 70 won't lean out.
  165. O.S. FS-120 III Surpass 4-Stroke with pump "NEED HELP"
  166. os max 140 rx
  167. need some help with my 18tm
  168. O.S.120 Carby does any body Know
  169. OS H60FGR Blackhead
  170. Afterrun oil? O.S. FS-91 w/pump
  171. O.S. FS-91 w/pump, peak RPM?
  172. oil content / FS-91 II w/pump
  173. os 56 fsa
  174. 40 LA Fuel Inlet Fitting Came Loose
  175. Possible largest prop for OS .46 AX
  176. *OS 120AX Bearings*
  177. os 46 ax running a 20000 rpm
  178. rywill these engines fit??
  179. os rz max
  180. Hyper 50 damage
  181. .91 FS II Surpass leaking and losing power
  182. 52 Surpass Tappet Gap
  183. OS21TM air leak?
  184. O.S. 46FS piston ring
  185. os 91fs no compression
  186. 1.20ax prop question
  187. FS-70 Ultimate fix
  188. MOVED: O.S. 61 RF - Tune pipe - Hanno II Sleeve ABN/ABC
  189. OS FL70 four stroke
  190. O.S 1.20FS Question?
  191. OS Max 25 Sticky
  192. OS 1.20 FS runs erratic
  193. OS .61 FX
  194. 55AX sensitive needle
  195. FS120 Surpass II pumped low speed needle setting
  196. FS-120 Surpass III Engine w/Pump What fuel?
  197. Where can I send the engine back in the UK?
  198. v spec carb
  199. few questions on the .21 V-Spec
  200. OS 1.20 pump regulator
  201. AX .55 Low Speed factory setting
  202. varnish on 6 month old engine
  203. One way bearing slipping
  204. SF .46P setup
  205. OS FS91 II ticking
  206. 18CV-RX in Tmaxx
  207. OS 32SX air leak problem
  208. 91FX break-in with Bisson muffler
  209. Question on OS 75 AX
  210. Head Shim for 21TM w/30% Nitro
  211. OS61SX-WC, changed fuel to lower nitro
  212. .18tz hard to start
  213. OS FS-91 / w Pump, should I avoid castor oil?
  214. 55 AX perry pump ??
  215. OS61Fsr
  216. OS FS-91 / pump; runs when needle valve fully closed?
  217. What is the part number for the most updated needle valve for a 91FX
  218. Idea to Secure Muffler on OS FS91 II - Is it OK?
  219. os 160 FX woodruf key
  220. 91 FX Leans Out?
  221. Exhaust connection threads
  222. 18tz w/ 18tm parts
  223. .18 cvr-x Stalling
  224. OS FT-160 Gemini Tank question
  225. 18tm
  226. O.S. 1.60 Back Plates
  227. OS Max .91 Surpass 4-Stroke engine - Pipe & Muffler Question:
  228. .91 Surpass crankcase tap
  229. Question about O.S. 46 AX carb
  230. OS FS-200S Pump
  231. WHICH PROPELLER FOR OS 91 DF?
  232. OS-120AX quits
  233. Should I send my .55ax in?
  234. O.S. 21VZ-B V-Spec Buggy/21J
  235. How to take cooling head off .21tm?
  236. New OS 81 4-stroke
  237. OS 52 Four Stoke Break-In
  238. Good plugs for the .21TM?
  239. OS 70 Ultimate carb question / solution
  240. OS 20 FP
  241. Gasket Set cross reference?
  242. o.s. .18tm carb?
  243. 15CVR-X and 18CVR-X Starting shaft interchangable?
  244. OS18TM question
  245. Missing Screw Size?
  246. FT 160 Gemini
  247. MOVED: Magnum XLS 52
  248. 91 Surpass II pump problems (HELP)
  249. New O.S. 81 4 stroke [ abit warm ]
  250. 3D prop for .46 AX??

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