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

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