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  1. In need of a 70 Surpass II crankcase - Discontinued?
  2. OS 61 FX dead sticking
  3. OS FS61 head screws
  4. AX55's
  5. O.S 55AX vs. 61FX?
  6. O.S. 61 Question?
  7. where are os .21 vzb manuals online?
  8. Will gasoline damage O rings?
  9. Which engine is that???
  10. Fitting Prop to an OS FT 240 (300)
  11. OS .32 sx cylinder head???
  12. 55 AX Mid Range
  13. OS FS61 cam bearing removal
  14. OS 21 VG stall after half tank
  15. replacement piston ring for OS MAX 50 SX
  16. OS 91FX Problem
  17. FS-1.20S III
  18. OS 18 cvr won't say running?
  19. OS18TZ-TX crankshaft into 18TM
  20. Bearing replacement OS 1.20FS Surpass
  21. 91 surpass vs 91 surpass pumped
  22. 91 surpass factory mixture setting
  23. O.S. .18 cv-rx
  24. OS 91FX Break-In help
  25. 4 cycle assembly question
  26. FR5-300 Sirius radial being discontinued?
  27. A3 plugs vs the RCAT glow starter
  28. Motor mount for OS 200U
  29. OS Carb
  30. idling screw
  31. Which fuel for both O.S. FX25 & O.S. FS56a
  32. Honing a 46 FX
  33. OS70 backfiring
  34. Minor pitting on piston.
  35. OS 61FX lowspeed Needle valve location?
  36. OS46AX engine
  37. fs91/p adjust...
  38. .46 LA fuel and prop recomandations
  39. fs-91/p breakin problem
  40. Best prop for OS 1.20 AX
  41. O.S. 15 LA Won't Start
  42. FS56a RPM
  43. YS/Saito 20/20 in OS 46FX
  44. parts for 2nd gen. 1.20w/pump
  45. new 37SZ-H Problem
  46. o.s 21 tm tmaxx minifold
  47. Vspec VZB .21 (possible connecting rod dmg?)
  48. OS 61 RF Thrust washer
  49. os .21tm factory settings
  50. 91fx max rpm
  51. Hyper 50 problem??
  52. Rust: pre-existing ??
  53. Trouble With New OS .46AX
  54. OS 91FX can't shut down
  55. OS .61 FSR carburetor
  56. O.S. .50SX Bearings
  57. 18CV-R and 15CV-R
  58. O.S. 4BK Carb Replacement
  59. Engine ID help
  60. os.18cvrx 11j rotoary carb wont start
  61. FP-60 liner
  62. 1.20 FM OS not running
  63. Replacement bearing for OS .30VG-P
  64. O.S. FSa-81 Carb Settings
  65. 15CV-R or AQ .18 more powerfull?
  66. OS .18CV-RX Crankshaft question
  67. OS 61 SF-P, PD-02 pump unit question.
  68. OS FS 91 Break in / running fuel
  69. 25VF and 25VF-DF Crankshaft Specs
  70. OS 1.60 dies in air
  71. OS 300 5 cyl
  72. .21 VZ-B V-SPEC (T)
  73. .30 VG rotostart?
  74. 30 VG "safe" temps...
  75. OS 91 Surpass header
  76. OS FSa 56 problem
  77. Cooling head for .30VG
  78. O.S. 40LA needle valve + airbleed screw setting.
  79. O.S. FS-91 II Surpass w/Pump fuel tank location?
  80. os.18cvrx w/11j rotary carb
  81. os 40la screw help
  82. O.S 1.6fx new ring
  83. .91 FX + Macs Tuned Pipe Questions
  84. OS18TZ standard shaft with rot carb ?
  85. OS 15 FP RPM
  86. "Locked Up": Drive Hub and Woodruff Key
  87. OS 200 4/C question
  88. FSa-56 Inverted mounting
  89. FSa-56 fuel
  90. OS .21RG non pullstart
  91. MOVED: cordless starter
  92. O.S. 55AX Inverted Mount Problems
  93. o.s 55ax
  94. os 70 surpass 2 drive washer
  95. OS VSpec #13895
  96. OS .55 AX Funfly
  97. MOVED: O.S. .81 FS-A
  98. O.S. 160 Sleeve repair Question???????
  99. O.S 52 surpass carb adjustment
  100. Pattern prop for new OS 91FX
  101. FS120 Series II pumped - fuel leak at regulator
  102. .26FS Questions
  103. O.S. 61VR-M Connecting rod
  104. which 3 blade prop for 91fx?
  105. OS 25 FSR Backplate and gasket
  106. OS 46SF P VS 46FX
  107. OS 75AX Pitts style muffler questions
  108. O.S. 21 V-Spec
  109. 91 fx carb replacement
  110. 91FX prop rpm
  111. OS 50SX-H graduation markings ??
  112. Factory slide carb settings for OS Max 12CV
  113. OS 61fx corrosion
  114. problems with .46 FX H SOLVED!
  115. OS 91 FS surpass
  116. OS FT-120 II - ideal rpm
  117. ft160 low compression
  118. OS 1.20 Pumped Motor Mount
  119. Alternate OS break-in procedure?
  120. Correct spec 18TZ-X
  121. Advice on maintenance of OS
  122. OS 15CV-R and 18CV-R take the same header?
  123. Air bleed screw for Max-H 40
  124. 25fx
  125. Ring for old OS50 Max
  126. OS.46 FXI needle valve
  127. Help with An OS.46SF-P
  128. Glo plugs for older OS engines.
  129. 40 LA Question
  130. Fuel line connections on 160 twin?
  131. OS .25 FX
  132. .46 FXi and .46AX
  133. MOVED: Just ordered the os 75 ax
  134. O.S. FS-90 Carb
  135. OS .61 FX break in prop
  136. OS 18tm meter valve problem
  137. AX55 After market muffler
  138. O.S. FS-26S-C II 4-Stroke cam bearings
  139. OS 140 RX rear exhaust gasket
  140. OS 46 AX
  141. os fs 40 surpass 4 stroke engine parts
  142. o.s 21tm
  143. I need the part # for the 10E-R carburetor for my .12 cv-r engine?
  144. Gasket material for OS engines
  145. OS 4 stroke runs best upright or inverted?
  146. FS-91SII Fuel doesn't flow to carb
  147. OS 120 Surpass - Pump or no pump?
  148. TIMING MARKS IL 300?
  149. OS FT-120 Gemini engine
  150. lube for os 2stroke engines
  151. OS-40LA idle problem
  152. .50 SX Low on power
  153. Removing camshaft bearings?
  154. OS91FX+TUNNED PIPE
  155. need help tuning a os max cv-r
  156. OS FS 120 WRIST PIN REMOVAL
  157. How do you remove OS .30 VG rear bearing?
  158. OS .46 support.
  159. OS 91FX Head Gasket Leak?
  160. Os 46ax Muffler problem
  161. 15CVR and 18CVR carbs interchangable?
  162. OS vz-m WONT STAY RUNINNG
  163. do the OS FS engines come with any tools?
  164. O.S. 30 FS Surpass Ringed Engine
  165. intake stack for OS carbs?
  166. OS .30 VG symptoms
  167. High end and low end for .70 Surpass II
  168. OS.91SX-H C SPEC PS- VIPER
  169. OS 21VZ-B V-Spec-T HELP
  170. OS 46 SF ABC
  171. OS 55AX Carb loosening
  172. .12tz carb restrictor/ break in on crt.5
  173. 2 O.S. engines, same problem
  174. OS FT 160 Twin Cam Timing
  175. Problem running .12tz (5)...help pls..
  176. Chart Method to find years of manufacture- Help
  177. The elusive 75AX Ringed engine....
  178. Info on my OS 70 Surpass engine?
  179. OS Max 12TZ Tuned
  180. Breaking in OS 1.20 AX for pusher config
  181. New 4-Stroke What Fuel?
  182. idling speed
  183. Glow plugs burnt out
  184. os
  185. OS 30VG cutting off
  186. o.s 21tm
  187. Sirius collector ring installation problem
  188. What happen to the OS 70 Surpass II
  189. RE: 32sx piston and conrod
  190. RE: 32sx piston and conrod
  191. OS 70 sz-h for airplane use
  192. Max 12TZ(P) T3 Temperature
  193. 46 AX Head shim
  194. .18cv-r cooling head
  195. OS 91 SURPASS
  196. O.S. 1.20 AX Remote Needle Valve ??
  197. .12CV-X Question
  198. Rerouting exhaust on OS 40 FS
  199. .91FX tuned pipe?
  200. Is there an AX on the way between the .75 and 1.20
  201. FS 200
  202. OS-140 EFI Question
  203. 1.60fx
  204. 0.12 TR with 0.12TZ Turbo Head
  205. OS46AXABL
  206. OS 160 Twin
  207. OS MAX 40-H - Worth to restore?
  208. OS FS-120 Two-Cover Valve Lash
  209. FS 120 Supercharged HELP
  210. OS 77 VRDF
  211. What engine to use
  212. just delete this.
  213. os 18tm getting hot
  214. OS 0.12 TR @ 0.15 Turbo Head
  215. 3 blade prop &Tank configuration - FS 91
  216. AX46 Muffler Gasket
  217. pressure tube length
  218. String engine
  219. FS90 Overhaul Help
  220. Fuel for V-spec
  221. Hanno RE 61 replacement
  222. What Pipe for the OS 160
  223. OS 160 Gemini Carb Differences
  224. FT-120 Carb
  225. os 46ax rear bearing
  226. O.S. .70 Surpass Valve Timing
  227. MOVED: how to get CAD model for the OS engines
  228. 160 FX Midrange
  229. NItro MIxture, Timing, and Head Shims
  230. All my engines
  231. OS 50sx
  232. 46FX vs 55AX
  233. discontinued
  234. Duratrax LR3 in 18TZ.
  235. Re: OS 160 Twin 4 Stroke..
  236. OS 18 CVR break-in
  237. os 120 pump ticking noise
  238. .12 tz
  239. SF or FSR ?
  240. os 160 twin tank vent
  241. OS 160 Twin
  242. 25fx and 32sx exhaust port bolt pattern
  243. Inverted OS 91fs
  244. OS 55AX wont stay running
  245. break in the speed.
  246. OS FS 70 Rocker cover question
  247. Is my FX .61 casing toast?
  248. Fuel suggestion for OS engines
  249. leaky 46AX muffler
  250. OS 70 Bearing replacement

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