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  1. OS FS-48 Replacement Head
  2. *OS 120AX & Nitro Content*
  3. Inverted OS FL 70 won't lean out.
  4. O.S. FS-120 III Surpass 4-Stroke with pump "NEED HELP"
  5. os max 140 rx
  6. need some help with my 18tm
  7. O.S.120 Carby does any body Know
  8. OS H60FGR Blackhead
  9. Afterrun oil? O.S. FS-91 w/pump
  10. O.S. FS-91 w/pump, peak RPM?
  11. oil content / FS-91 II w/pump
  12. os 56 fsa
  13. 40 LA Fuel Inlet Fitting Came Loose
  14. Possible largest prop for OS .46 AX
  15. *OS 120AX Bearings*
  16. os 46 ax running a 20000 rpm
  17. rywill these engines fit??
  18. os rz max
  19. Hyper 50 damage
  20. .91 FS II Surpass leaking and losing power
  21. 52 Surpass Tappet Gap
  22. OS21TM air leak?
  23. O.S. 46FS piston ring
  24. os 91fs no compression
  25. 1.20ax prop question
  26. FS-70 Ultimate fix
  27. MOVED: O.S. 61 RF - Tune pipe - Hanno II Sleeve ABN/ABC
  28. OS FL70 four stroke
  29. O.S 1.20FS Question?
  30. OS Max 25 Sticky
  31. OS 1.20 FS runs erratic
  32. OS .61 FX
  33. 55AX sensitive needle
  34. FS120 Surpass II pumped low speed needle setting
  35. FS-120 Surpass III Engine w/Pump What fuel?
  36. Where can I send the engine back in the UK?
  37. v spec carb
  38. few questions on the .21 V-Spec
  39. OS 1.20 pump regulator
  40. AX .55 Low Speed factory setting
  41. varnish on 6 month old engine
  42. One way bearing slipping
  43. SF .46P setup
  44. OS FS91 II ticking
  45. 18CV-RX in Tmaxx
  46. OS 32SX air leak problem
  47. 91FX break-in with Bisson muffler
  48. Question on OS 75 AX
  49. Head Shim for 21TM w/30% Nitro
  50. OS61SX-WC, changed fuel to lower nitro
  51. .18tz hard to start
  52. OS FS-91 / w Pump, should I avoid castor oil?
  53. 55 AX perry pump ??
  54. OS61Fsr
  55. OS FS-91 / pump; runs when needle valve fully closed?
  56. What is the part number for the most updated needle valve for a 91FX
  57. Idea to Secure Muffler on OS FS91 II - Is it OK?
  58. os 160 FX woodruf key
  59. 91 FX Leans Out?
  60. Exhaust connection threads
  61. 18tz w/ 18tm parts
  62. .18 cvr-x Stalling
  63. OS FT-160 Gemini Tank question
  64. 18tm
  65. O.S. 1.60 Back Plates
  66. OS Max .91 Surpass 4-Stroke engine - Pipe & Muffler Question:
  67. .91 Surpass crankcase tap
  68. Question about O.S. 46 AX carb
  69. OS FS-200S Pump
  70. WHICH PROPELLER FOR OS 91 DF?
  71. OS-120AX quits
  72. Should I send my .55ax in?
  73. O.S. 21VZ-B V-Spec Buggy/21J
  74. How to take cooling head off .21tm?
  75. New OS 81 4-stroke
  76. OS 52 Four Stoke Break-In
  77. Good plugs for the .21TM?
  78. OS 70 Ultimate carb question / solution
  79. OS 20 FP
  80. Gasket Set cross reference?
  81. o.s. .18tm carb?
  82. 15CVR-X and 18CVR-X Starting shaft interchangable?
  83. OS18TM question
  84. Missing Screw Size?
  85. FT 160 Gemini
  86. MOVED: Magnum XLS 52
  87. 91 Surpass II pump problems (HELP)
  88. New O.S. 81 4 stroke [ abit warm ]
  89. 3D prop for .46 AX??
  90. OS FT-160 valve adjustment
  91. 46AX - Fine grit in filter after break in
  92. O.S. 91 C-Spec conversion to acft.
  93. OS 120 surpass III w/pump
  94. OS18TM problem
  95. 55ax muffler
  96. OS 91 FX Muffler
  97. Hyper 50 Blown Piston again!!
  98. os 18tz head
  99. 46AX Liner issues
  100. 120 AX Break-in Prop
  101. 1989 OS MAX 46 SF-S abc STARTING PROBLEM
  102. rpm surging 4stroke 52 surrpass
  103. OS18 TZ Pbs
  104. 120 ax max recommended rpm
  105. 50SX-H Hyper rich low end
  106. os 70 surpass, stopping
  107. FL70 muffler pressure to the sump
  108. FL-70 loss of power
  109. OS 52 4 stroke will not idle
  110. OS FS-52 4stroke in hot weather.
  111. vspec problem
  112. OS 200 FS settings ??
  113. In need of a 70 Surpass II crankcase - Discontinued?
  114. OS 61 FX dead sticking
  115. OS FS61 head screws
  116. AX55's
  117. O.S 55AX vs. 61FX?
  118. O.S. 61 Question?
  119. where are os .21 vzb manuals online?
  120. Will gasoline damage O rings?
  121. Which engine is that???
  122. Fitting Prop to an OS FT 240 (300)
  123. OS .32 sx cylinder head???
  124. 55 AX Mid Range
  125. OS FS61 cam bearing removal
  126. OS 21 VG stall after half tank
  127. replacement piston ring for OS MAX 50 SX
  128. OS 91FX Problem
  129. FS-1.20S III
  130. OS 18 cvr won't say running?
  131. OS18TZ-TX crankshaft into 18TM
  132. Bearing replacement OS 1.20FS Surpass
  133. 91 surpass vs 91 surpass pumped
  134. 91 surpass factory mixture setting
  135. O.S. .18 cv-rx
  136. OS 91FX Break-In help
  137. 4 cycle assembly question
  138. FR5-300 Sirius radial being discontinued?
  139. A3 plugs vs the RCAT glow starter
  140. Motor mount for OS 200U
  141. OS Carb
  142. idling screw
  143. Which fuel for both O.S. FX25 & O.S. FS56a
  144. Honing a 46 FX
  145. OS70 backfiring
  146. Minor pitting on piston.
  147. OS 61FX lowspeed Needle valve location?
  148. OS46AX engine
  149. fs91/p adjust...
  150. .46 LA fuel and prop recomandations
  151. fs-91/p breakin problem
  152. Best prop for OS 1.20 AX
  153. O.S. 15 LA Won't Start
  154. FS56a RPM
  155. YS/Saito 20/20 in OS 46FX
  156. parts for 2nd gen. 1.20w/pump
  157. new 37SZ-H Problem
  158. o.s 21 tm tmaxx minifold
  159. Vspec VZB .21 (possible connecting rod dmg?)
  160. OS 61 RF Thrust washer
  161. os .21tm factory settings
  162. 91fx max rpm
  163. Hyper 50 problem??
  164. Rust: pre-existing ??
  165. Trouble With New OS .46AX
  166. OS 91FX can't shut down
  167. OS .61 FSR carburetor
  168. O.S. .50SX Bearings
  169. 18CV-R and 15CV-R
  170. O.S. 4BK Carb Replacement
  171. Engine ID help
  172. os.18cvrx 11j rotoary carb wont start
  173. FP-60 liner
  174. 1.20 FM OS not running
  175. Replacement bearing for OS .30VG-P
  176. O.S. FSa-81 Carb Settings
  177. 15CV-R or AQ .18 more powerfull?
  178. OS .18CV-RX Crankshaft question
  179. OS 61 SF-P, PD-02 pump unit question.
  180. OS FS 91 Break in / running fuel
  181. 25VF and 25VF-DF Crankshaft Specs
  182. OS 1.60 dies in air
  183. OS 300 5 cyl
  184. .21 VZ-B V-SPEC (T)
  185. .30 VG rotostart?
  186. 30 VG "safe" temps...
  187. OS 91 Surpass header
  188. OS FSa 56 problem
  189. Cooling head for .30VG
  190. O.S. 40LA needle valve + airbleed screw setting.
  191. O.S. FS-91 II Surpass w/Pump fuel tank location?
  192. os.18cvrx w/11j rotary carb
  193. os 40la screw help
  194. O.S 1.6fx new ring
  195. .91 FX + Macs Tuned Pipe Questions
  196. OS18TZ standard shaft with rot carb ?
  197. OS 15 FP RPM
  198. "Locked Up": Drive Hub and Woodruff Key
  199. OS 200 4/C question
  200. FSa-56 Inverted mounting
  201. FSa-56 fuel
  202. OS .21RG non pullstart
  203. MOVED: cordless starter
  204. O.S. 55AX Inverted Mount Problems
  205. o.s 55ax
  206. os 70 surpass 2 drive washer
  207. OS VSpec #13895
  208. OS .55 AX Funfly
  209. MOVED: O.S. .81 FS-A
  210. O.S. 160 Sleeve repair Question???????
  211. O.S 52 surpass carb adjustment
  212. Pattern prop for new OS 91FX
  213. FS120 Series II pumped - fuel leak at regulator
  214. .26FS Questions
  215. O.S. 61VR-M Connecting rod
  216. which 3 blade prop for 91fx?
  217. OS 25 FSR Backplate and gasket
  218. OS 46SF P VS 46FX
  219. OS 75AX Pitts style muffler questions
  220. O.S. 21 V-Spec
  221. 91 fx carb replacement
  222. 91FX prop rpm
  223. OS 50SX-H graduation markings ??
  224. Factory slide carb settings for OS Max 12CV
  225. OS 61fx corrosion
  226. problems with .46 FX H SOLVED!
  227. OS 91 FS surpass
  228. OS FT-120 II - ideal rpm
  229. ft160 low compression
  230. OS 1.20 Pumped Motor Mount
  231. Alternate OS break-in procedure?
  232. Correct spec 18TZ-X
  233. Advice on maintenance of OS
  234. OS 15CV-R and 18CV-R take the same header?
  235. Air bleed screw for Max-H 40
  236. 25fx
  237. Ring for old OS50 Max
  238. OS.46 FXI needle valve
  239. Help with An OS.46SF-P
  240. Glo plugs for older OS engines.
  241. 40 LA Question
  242. Fuel line connections on 160 twin?
  243. OS .25 FX
  244. .46 FXi and .46AX
  245. MOVED: Just ordered the os 75 ax
  246. O.S. FS-90 Carb
  247. OS .61 FX break in prop
  248. OS 18tm meter valve problem
  249. AX55 After market muffler
  250. O.S. FS-26S-C II 4-Stroke cam bearings