View Full Version : O.S. Engines Support



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

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