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  1. 3D prop for .46 AX??
  2. OS FT-160 valve adjustment
  3. 46AX - Fine grit in filter after break in
  4. O.S. 91 C-Spec conversion to acft.
  5. OS 120 surpass III w/pump
  6. OS18TM problem
  7. 55ax muffler
  8. OS 91 FX Muffler
  9. Hyper 50 Blown Piston again!!
  10. os 18tz head
  11. 46AX Liner issues
  12. 120 AX Break-in Prop
  13. 1989 OS MAX 46 SF-S abc STARTING PROBLEM
  14. rpm surging 4stroke 52 surrpass
  15. OS18 TZ Pbs
  16. 120 ax max recommended rpm
  17. 50SX-H Hyper rich low end
  18. os 70 surpass, stopping
  19. FL70 muffler pressure to the sump
  20. FL-70 loss of power
  21. OS 52 4 stroke will not idle
  22. OS FS-52 4stroke in hot weather.
  23. vspec problem
  24. OS 200 FS settings ??
  25. In need of a 70 Surpass II crankcase - Discontinued?
  26. OS 61 FX dead sticking
  27. OS FS61 head screws
  28. AX55's
  29. O.S 55AX vs. 61FX?
  30. O.S. 61 Question?
  31. where are os .21 vzb manuals online?
  32. Will gasoline damage O rings?
  33. Which engine is that???
  34. Fitting Prop to an OS FT 240 (300)
  35. OS .32 sx cylinder head???
  36. 55 AX Mid Range
  37. OS FS61 cam bearing removal
  38. OS 21 VG stall after half tank
  39. replacement piston ring for OS MAX 50 SX
  40. OS 91FX Problem
  41. FS-1.20S III
  42. OS 18 cvr won't say running?
  43. OS18TZ-TX crankshaft into 18TM
  44. Bearing replacement OS 1.20FS Surpass
  45. 91 surpass vs 91 surpass pumped
  46. 91 surpass factory mixture setting
  47. O.S. .18 cv-rx
  48. OS 91FX Break-In help
  49. 4 cycle assembly question
  50. FR5-300 Sirius radial being discontinued?
  51. A3 plugs vs the RCAT glow starter
  52. Motor mount for OS 200U
  53. OS Carb
  54. idling screw
  55. Which fuel for both O.S. FX25 & O.S. FS56a
  56. Honing a 46 FX
  57. OS70 backfiring
  58. Minor pitting on piston.
  59. OS 61FX lowspeed Needle valve location?
  60. OS46AX engine
  61. fs91/p adjust...
  62. .46 LA fuel and prop recomandations
  63. fs-91/p breakin problem
  64. Best prop for OS 1.20 AX
  65. O.S. 15 LA Won't Start
  66. FS56a RPM
  67. YS/Saito 20/20 in OS 46FX
  68. parts for 2nd gen. 1.20w/pump
  69. new 37SZ-H Problem
  70. o.s 21 tm tmaxx minifold
  71. Vspec VZB .21 (possible connecting rod dmg?)
  72. OS 61 RF Thrust washer
  73. os .21tm factory settings
  74. 91fx max rpm
  75. Hyper 50 problem??
  76. Rust: pre-existing ??
  77. Trouble With New OS .46AX
  78. OS 91FX can't shut down
  79. OS .61 FSR carburetor
  80. O.S. .50SX Bearings
  81. 18CV-R and 15CV-R
  82. O.S. 4BK Carb Replacement
  83. Engine ID help
  84. os.18cvrx 11j rotoary carb wont start
  85. FP-60 liner
  86. 1.20 FM OS not running
  87. Replacement bearing for OS .30VG-P
  88. O.S. FSa-81 Carb Settings
  89. 15CV-R or AQ .18 more powerfull?
  90. OS .18CV-RX Crankshaft question
  91. OS 61 SF-P, PD-02 pump unit question.
  92. OS FS 91 Break in / running fuel
  93. 25VF and 25VF-DF Crankshaft Specs
  94. OS 1.60 dies in air
  95. OS 300 5 cyl
  96. .21 VZ-B V-SPEC (T)
  97. .30 VG rotostart?
  98. 30 VG "safe" temps...
  99. OS 91 Surpass header
  100. OS FSa 56 problem
  101. Cooling head for .30VG
  102. O.S. 40LA needle valve + airbleed screw setting.
  103. O.S. FS-91 II Surpass w/Pump fuel tank location?
  104. os.18cvrx w/11j rotary carb
  105. os 40la screw help
  106. O.S 1.6fx new ring
  107. .91 FX + Macs Tuned Pipe Questions
  108. OS18TZ standard shaft with rot carb ?
  109. OS 15 FP RPM
  110. "Locked Up": Drive Hub and Woodruff Key
  111. OS 200 4/C question
  112. FSa-56 Inverted mounting
  113. FSa-56 fuel
  114. OS .21RG non pullstart
  115. MOVED: cordless starter
  116. O.S. 55AX Inverted Mount Problems
  117. o.s 55ax
  118. os 70 surpass 2 drive washer
  119. OS VSpec #13895
  120. OS .55 AX Funfly
  121. MOVED: O.S. .81 FS-A
  122. O.S. 160 Sleeve repair Question???????
  123. O.S 52 surpass carb adjustment
  124. Pattern prop for new OS 91FX
  125. FS120 Series II pumped - fuel leak at regulator
  126. .26FS Questions
  127. O.S. 61VR-M Connecting rod
  128. which 3 blade prop for 91fx?
  129. OS 25 FSR Backplate and gasket
  130. OS 46SF P VS 46FX
  131. OS 75AX Pitts style muffler questions
  132. O.S. 21 V-Spec
  133. 91 fx carb replacement
  134. 91FX prop rpm
  135. OS 50SX-H graduation markings ??
  136. Factory slide carb settings for OS Max 12CV
  137. OS 61fx corrosion
  138. problems with .46 FX H SOLVED!
  139. OS 91 FS surpass
  140. OS FT-120 II - ideal rpm
  141. ft160 low compression
  142. OS 1.20 Pumped Motor Mount
  143. Alternate OS break-in procedure?
  144. Correct spec 18TZ-X
  145. Advice on maintenance of OS
  146. OS 15CV-R and 18CV-R take the same header?
  147. Air bleed screw for Max-H 40
  148. 25fx
  149. Ring for old OS50 Max
  150. OS.46 FXI needle valve
  151. Help with An OS.46SF-P
  152. Glo plugs for older OS engines.
  153. 40 LA Question
  154. Fuel line connections on 160 twin?
  155. OS .25 FX
  156. .46 FXi and .46AX
  157. MOVED: Just ordered the os 75 ax
  158. O.S. FS-90 Carb
  159. OS .61 FX break in prop
  160. OS 18tm meter valve problem
  161. AX55 After market muffler
  162. O.S. FS-26S-C II 4-Stroke cam bearings
  163. OS 140 RX rear exhaust gasket
  164. OS 46 AX
  165. os fs 40 surpass 4 stroke engine parts
  166. o.s 21tm
  167. I need the part # for the 10E-R carburetor for my .12 cv-r engine?
  168. Gasket material for OS engines
  169. OS 4 stroke runs best upright or inverted?
  170. FS-91SII Fuel doesn't flow to carb
  171. OS 120 Surpass - Pump or no pump?
  172. TIMING MARKS IL 300?
  173. OS FT-120 Gemini engine
  174. lube for os 2stroke engines
  175. OS-40LA idle problem
  176. .50 SX Low on power
  177. Removing camshaft bearings?
  178. OS91FX+TUNNED PIPE
  179. need help tuning a os max cv-r
  180. OS FS 120 WRIST PIN REMOVAL
  181. How do you remove OS .30 VG rear bearing?
  182. OS .46 support.
  183. OS 91FX Head Gasket Leak?
  184. Os 46ax Muffler problem
  185. 15CVR and 18CVR carbs interchangable?
  186. OS vz-m WONT STAY RUNINNG
  187. do the OS FS engines come with any tools?
  188. O.S. 30 FS Surpass Ringed Engine
  189. intake stack for OS carbs?
  190. OS .30 VG symptoms
  191. High end and low end for .70 Surpass II
  192. OS.91SX-H C SPEC PS- VIPER
  193. OS 21VZ-B V-Spec-T HELP
  194. OS 46 SF ABC
  195. OS 55AX Carb loosening
  196. .12tz carb restrictor/ break in on crt.5
  197. 2 O.S. engines, same problem
  198. OS FT 160 Twin Cam Timing
  199. Problem running .12tz (5)...help pls..
  200. Chart Method to find years of manufacture- Help
  201. The elusive 75AX Ringed engine....
  202. Info on my OS 70 Surpass engine?
  203. OS Max 12TZ Tuned
  204. Breaking in OS 1.20 AX for pusher config
  205. New 4-Stroke What Fuel?
  206. idling speed
  207. Glow plugs burnt out
  208. os
  209. OS 30VG cutting off
  210. o.s 21tm
  211. Sirius collector ring installation problem
  212. What happen to the OS 70 Surpass II
  213. RE: 32sx piston and conrod
  214. RE: 32sx piston and conrod
  215. OS 70 sz-h for airplane use
  216. Max 12TZ(P) T3 Temperature
  217. 46 AX Head shim
  218. .18cv-r cooling head
  219. OS 91 SURPASS
  220. O.S. 1.20 AX Remote Needle Valve ??
  221. .12CV-X Question
  222. Rerouting exhaust on OS 40 FS
  223. .91FX tuned pipe?
  224. Is there an AX on the way between the .75 and 1.20
  225. FS 200
  226. OS-140 EFI Question
  227. 1.60fx
  228. 0.12 TR with 0.12TZ Turbo Head
  229. OS46AXABL
  230. OS 160 Twin
  231. OS MAX 40-H - Worth to restore?
  232. OS FS-120 Two-Cover Valve Lash
  233. FS 120 Supercharged HELP
  234. OS 77 VRDF
  235. What engine to use
  236. just delete this.
  237. os 18tm getting hot
  238. OS 0.12 TR @ 0.15 Turbo Head
  239. 3 blade prop &Tank configuration - FS 91
  240. AX46 Muffler Gasket
  241. pressure tube length
  242. String engine
  243. FS90 Overhaul Help
  244. Fuel for V-spec
  245. Hanno RE 61 replacement
  246. What Pipe for the OS 160
  247. OS 160 Gemini Carb Differences
  248. FT-120 Carb
  249. os 46ax rear bearing
  250. O.S. .70 Surpass Valve Timing

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