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

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