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  1. OS61SX-WC, changed fuel to lower nitro
  2. .18tz hard to start
  3. OS FS-91 / w Pump, should I avoid castor oil?
  4. 55 AX perry pump ??
  5. OS61Fsr
  6. OS FS-91 / pump; runs when needle valve fully closed?
  7. What is the part number for the most updated needle valve for a 91FX
  8. Idea to Secure Muffler on OS FS91 II - Is it OK?
  9. os 160 FX woodruf key
  10. 91 FX Leans Out?
  11. Exhaust connection threads
  12. 18tz w/ 18tm parts
  13. .18 cvr-x Stalling
  14. OS FT-160 Gemini Tank question
  15. 18tm
  16. O.S. 1.60 Back Plates
  17. OS Max .91 Surpass 4-Stroke engine - Pipe & Muffler Question:
  18. .91 Surpass crankcase tap
  19. Question about O.S. 46 AX carb
  20. OS FS-200S Pump
  21. WHICH PROPELLER FOR OS 91 DF?
  22. OS-120AX quits
  23. Should I send my .55ax in?
  24. O.S. 21VZ-B V-Spec Buggy/21J
  25. How to take cooling head off .21tm?
  26. New OS 81 4-stroke
  27. OS 52 Four Stoke Break-In
  28. Good plugs for the .21TM?
  29. OS 70 Ultimate carb question / solution
  30. OS 20 FP
  31. Gasket Set cross reference?
  32. o.s. .18tm carb?
  33. 15CVR-X and 18CVR-X Starting shaft interchangable?
  34. OS18TM question
  35. Missing Screw Size?
  36. FT 160 Gemini
  37. MOVED: Magnum XLS 52
  38. 91 Surpass II pump problems (HELP)
  39. New O.S. 81 4 stroke [ abit warm ]
  40. 3D prop for .46 AX??
  41. OS FT-160 valve adjustment
  42. 46AX - Fine grit in filter after break in
  43. O.S. 91 C-Spec conversion to acft.
  44. OS 120 surpass III w/pump
  45. OS18TM problem
  46. 55ax muffler
  47. OS 91 FX Muffler
  48. Hyper 50 Blown Piston again!!
  49. os 18tz head
  50. 46AX Liner issues
  51. 120 AX Break-in Prop
  52. 1989 OS MAX 46 SF-S abc STARTING PROBLEM
  53. rpm surging 4stroke 52 surrpass
  54. OS18 TZ Pbs
  55. 120 ax max recommended rpm
  56. 50SX-H Hyper rich low end
  57. os 70 surpass, stopping
  58. FL70 muffler pressure to the sump
  59. FL-70 loss of power
  60. OS 52 4 stroke will not idle
  61. OS FS-52 4stroke in hot weather.
  62. vspec problem
  63. OS 200 FS settings ??
  64. In need of a 70 Surpass II crankcase - Discontinued?
  65. OS 61 FX dead sticking
  66. OS FS61 head screws
  67. AX55's
  68. O.S 55AX vs. 61FX?
  69. O.S. 61 Question?
  70. where are os .21 vzb manuals online?
  71. Will gasoline damage O rings?
  72. Which engine is that???
  73. Fitting Prop to an OS FT 240 (300)
  74. OS .32 sx cylinder head???
  75. 55 AX Mid Range
  76. OS FS61 cam bearing removal
  77. OS 21 VG stall after half tank
  78. replacement piston ring for OS MAX 50 SX
  79. OS 91FX Problem
  80. FS-1.20S III
  81. OS 18 cvr won't say running?
  82. OS18TZ-TX crankshaft into 18TM
  83. Bearing replacement OS 1.20FS Surpass
  84. 91 surpass vs 91 surpass pumped
  85. 91 surpass factory mixture setting
  86. O.S. .18 cv-rx
  87. OS 91FX Break-In help
  88. 4 cycle assembly question
  89. FR5-300 Sirius radial being discontinued?
  90. A3 plugs vs the RCAT glow starter
  91. Motor mount for OS 200U
  92. OS Carb
  93. idling screw
  94. Which fuel for both O.S. FX25 & O.S. FS56a
  95. Honing a 46 FX
  96. OS70 backfiring
  97. Minor pitting on piston.
  98. OS 61FX lowspeed Needle valve location?
  99. OS46AX engine
  100. fs91/p adjust...
  101. .46 LA fuel and prop recomandations
  102. fs-91/p breakin problem
  103. Best prop for OS 1.20 AX
  104. O.S. 15 LA Won't Start
  105. FS56a RPM
  106. YS/Saito 20/20 in OS 46FX
  107. parts for 2nd gen. 1.20w/pump
  108. new 37SZ-H Problem
  109. o.s 21 tm tmaxx minifold
  110. Vspec VZB .21 (possible connecting rod dmg?)
  111. OS 61 RF Thrust washer
  112. os .21tm factory settings
  113. 91fx max rpm
  114. Hyper 50 problem??
  115. Rust: pre-existing ??
  116. Trouble With New OS .46AX
  117. OS 91FX can't shut down
  118. OS .61 FSR carburetor
  119. O.S. .50SX Bearings
  120. 18CV-R and 15CV-R
  121. O.S. 4BK Carb Replacement
  122. Engine ID help
  123. os.18cvrx 11j rotoary carb wont start
  124. FP-60 liner
  125. 1.20 FM OS not running
  126. Replacement bearing for OS .30VG-P
  127. O.S. FSa-81 Carb Settings
  128. 15CV-R or AQ .18 more powerfull?
  129. OS .18CV-RX Crankshaft question
  130. OS 61 SF-P, PD-02 pump unit question.
  131. OS FS 91 Break in / running fuel
  132. 25VF and 25VF-DF Crankshaft Specs
  133. OS 1.60 dies in air
  134. OS 300 5 cyl
  135. .21 VZ-B V-SPEC (T)
  136. .30 VG rotostart?
  137. 30 VG "safe" temps...
  138. OS 91 Surpass header
  139. OS FSa 56 problem
  140. Cooling head for .30VG
  141. O.S. 40LA needle valve + airbleed screw setting.
  142. O.S. FS-91 II Surpass w/Pump fuel tank location?
  143. os.18cvrx w/11j rotary carb
  144. os 40la screw help
  145. O.S 1.6fx new ring
  146. .91 FX + Macs Tuned Pipe Questions
  147. OS18TZ standard shaft with rot carb ?
  148. OS 15 FP RPM
  149. "Locked Up": Drive Hub and Woodruff Key
  150. OS 200 4/C question
  151. FSa-56 Inverted mounting
  152. FSa-56 fuel
  153. OS .21RG non pullstart
  154. MOVED: cordless starter
  155. O.S. 55AX Inverted Mount Problems
  156. o.s 55ax
  157. os 70 surpass 2 drive washer
  158. OS VSpec #13895
  159. OS .55 AX Funfly
  160. MOVED: O.S. .81 FS-A
  161. O.S. 160 Sleeve repair Question???????
  162. O.S 52 surpass carb adjustment
  163. Pattern prop for new OS 91FX
  164. FS120 Series II pumped - fuel leak at regulator
  165. .26FS Questions
  166. O.S. 61VR-M Connecting rod
  167. which 3 blade prop for 91fx?
  168. OS 25 FSR Backplate and gasket
  169. OS 46SF P VS 46FX
  170. OS 75AX Pitts style muffler questions
  171. O.S. 21 V-Spec
  172. 91 fx carb replacement
  173. 91FX prop rpm
  174. OS 50SX-H graduation markings ??
  175. Factory slide carb settings for OS Max 12CV
  176. OS 61fx corrosion
  177. problems with .46 FX H SOLVED!
  178. OS 91 FS surpass
  179. OS FT-120 II - ideal rpm
  180. ft160 low compression
  181. OS 1.20 Pumped Motor Mount
  182. Alternate OS break-in procedure?
  183. Correct spec 18TZ-X
  184. Advice on maintenance of OS
  185. OS 15CV-R and 18CV-R take the same header?
  186. Air bleed screw for Max-H 40
  187. 25fx
  188. Ring for old OS50 Max
  189. OS.46 FXI needle valve
  190. Help with An OS.46SF-P
  191. Glo plugs for older OS engines.
  192. 40 LA Question
  193. Fuel line connections on 160 twin?
  194. OS .25 FX
  195. .46 FXi and .46AX
  196. MOVED: Just ordered the os 75 ax
  197. O.S. FS-90 Carb
  198. OS .61 FX break in prop
  199. OS 18tm meter valve problem
  200. AX55 After market muffler
  201. O.S. FS-26S-C II 4-Stroke cam bearings
  202. OS 140 RX rear exhaust gasket
  203. OS 46 AX
  204. os fs 40 surpass 4 stroke engine parts
  205. o.s 21tm
  206. I need the part # for the 10E-R carburetor for my .12 cv-r engine?
  207. Gasket material for OS engines
  208. OS 4 stroke runs best upright or inverted?
  209. FS-91SII Fuel doesn't flow to carb
  210. OS 120 Surpass - Pump or no pump?
  211. TIMING MARKS IL 300?
  212. OS FT-120 Gemini engine
  213. lube for os 2stroke engines
  214. OS-40LA idle problem
  215. .50 SX Low on power
  216. Removing camshaft bearings?
  217. OS91FX+TUNNED PIPE
  218. need help tuning a os max cv-r
  219. OS FS 120 WRIST PIN REMOVAL
  220. How do you remove OS .30 VG rear bearing?
  221. OS .46 support.
  222. OS 91FX Head Gasket Leak?
  223. Os 46ax Muffler problem
  224. 15CVR and 18CVR carbs interchangable?
  225. OS vz-m WONT STAY RUNINNG
  226. do the OS FS engines come with any tools?
  227. O.S. 30 FS Surpass Ringed Engine
  228. intake stack for OS carbs?
  229. OS .30 VG symptoms
  230. High end and low end for .70 Surpass II
  231. OS.91SX-H C SPEC PS- VIPER
  232. OS 21VZ-B V-Spec-T HELP
  233. OS 46 SF ABC
  234. OS 55AX Carb loosening
  235. .12tz carb restrictor/ break in on crt.5
  236. 2 O.S. engines, same problem
  237. OS FT 160 Twin Cam Timing
  238. Problem running .12tz (5)...help pls..
  239. Chart Method to find years of manufacture- Help
  240. The elusive 75AX Ringed engine....
  241. Info on my OS 70 Surpass engine?
  242. OS Max 12TZ Tuned
  243. Breaking in OS 1.20 AX for pusher config
  244. New 4-Stroke What Fuel?
  245. idling speed
  246. Glow plugs burnt out
  247. os
  248. OS 30VG cutting off
  249. o.s 21tm
  250. Sirius collector ring installation problem

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