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  1. How to buy YS FZ115-WS out of US?
  2. YS 140 fz flooding out
  3. Info about this YS please
  4. What is the fix for a rich mid range in a YS 120NC
  5. YS63FZ-S Valve Seats
  6. Valve retainer diameter
  7. Ys fz80 not available?
  8. ys 120 excessive smoke
  9. YS 140 DINGO how set the gap disc valve?
  10. YS 91 AC or new YS 80fz for Warbird Racing
  11. YS FZ 63 Low RPM
  12. YS91FZ, need help with the Regulator setting.
  13. 185 dz cdi - air in the fuel line between injector and throttle body
  14. DZ 170 Questions
  15. Ys 120 muffler thread
  16. ys63s quits running
  17. YS 185 Prop torque settings
  18. ys 63 metal sounds
  19. Need a little help sourcing a part
  20. YS 61 ar long stroke
  21. Dz140
  22. YS 115 flkooding
  23. New 80 four stroke???
  24. Ys 91fz
  25. YS63FZ-S quits in a maneuver
  26. YS 185 cdi zero surging going rich and back firing
  27. Engine size, Proppeller, RPM
  28. After run/storage oil for YS engines
  29. P51-d / ys 115ws or ys 140fz
  30. So what happened to YS (Yamada Mfg)?
  31. ys 120 fz...what prop size to use???
  32. YS 120 F compression
  33. YS FZ 53/70/80 S engines listed at YS Japan
  34. Ys 60 with macs tuned pipe
  35. Y.s. Fz120
  36. YS-120FS Rich Idle
  37. YS 63 won't go above 8,000 rpm
  38. older but seems to be in great shape ys 1.20 sputtering
  39. Drilling piston for
  40. YS 140 quits
  41. ys .45 2cycle
  42. YS FZ110S rebuilt - question on regulator
  43. re-assemble YS110s crankshaft into casing
  44. FZ110S bearings spec
  45. YS 185 won't throttle up.
  46. YS 170 DZ will not idle down
  47. Stuck valves
  48. YS DZ70 fuel draw problems....
  49. YS 175 CDI Negative Push engine dies out
  50. YS DZ70 - Air Bubbles in Fuel Injector Line
  51. Cue The Sombre Music
  52. Synthetic after run oil safe on silicone?
  53. Rear Bearing debris - New Crankcase?
  54. YS set up to run in reverse rotation for twin
  55. YF 120FZ - Valve cover Pressurized?
  56. This section is just a mine of information, thanks to all contributors
  57. Ys dz
  58. YS 53 squeaking
  59. YS 53 repaired
  60. Aluminum beam mount for YS 115
  61. Timing YS-FZ-140
  62. YS CDI ver. 2 - Power Source Selection
  63. YS F-120 RPM recommendations
  64. YS CDI Ver. 2 - RPM Telemetry
  65. Ys fz 91
  66. Ys 115fz s
  67. YS 61-S o-ring needle valve idle adjust
  68. 175FZ fuel system question
  69. us engine repair
  70. ys engine repair
  71. YS F-120 help... parts missing!
  72. YS 45 spare parts frustration
  73. Ys fz 110 prop nut
  74. Ys 61-s
  75. Ys fz63. Won't idle w/o glow igniter
  76. Ys fz63 won't idle without glow igniter
  77. Fz 120
  78. Check valve
  79. ys 110 not Guard low idel
  80. YS110s no response to throttle.
  81. greg bischof
  82. What Head Is This?
  83. I have a question about the DZ185 cdi.
  84. DZ160 Power Comparison
  85. Pulse 60 Saito 100 need more
  86. break in ys dz 170 cdi
  87. YS FZ70S vs DZ70S Difference?
  88. IS YS FZ1.40 TO MUCH POWER FOR Top Flite P51d 60 size?
  89. YS120AC needle valve question
  90. YS FZ110-S Muffler Adapter
  91. YS FZ 140 S Piston Damage.
  92. YS Fz63 disc valve and cylinder head valve sealing info needed
  93. YS 120AC piston design/failure?
  94. ys 63 fuel line pressure
  95. ys63 fuel consumpsion
  96. fz 63s mounting
  97. ys fz3s throttle arm
  98. YS 110S regulator tear down
  99. fuel dripping from carb on 120fz
  100. YS 115 problems
  101. FZ70-S : rotating the regulator
  102. Mid range stumble and dies
  103. Best , no compromise YsFZ140 exhaust setup?
  104. ys 70 pipe
  105. change the prop from 17x12 to 18.1x10
  106. .91 AC Mixture Problems
  107. YS170 fuel tank clunk & break-in
  108. YS50ST Head gasket dramas. need help!
  109. Ys175 cdi
  110. YS FZ 140 Sport Throttle Barrel Seizing
  111. YS 140L surging
  112. 140L compression
  113. ys fz 63 break in
  114. ys 160dz Question ?
  115. New YS Engine "Coming Soon"
  116. ys 170dz cam follower
  117. muffler for YS45FR
  118. When to replace YS bearings
  119. BYRON 30% Heli Fuel?
  120. YS 170 DZ Needle valve and regulator / low speed setting
  121. YS 170 prop - 4 blade?
  122. how do you stop syphoning
  123. to vibrate or not to vibrate...
  124. YS DZ 70
  125. YS45 on Arrow 40
  126. Seating New Bearings in a YS 61-R
  127. YS45FR won't start
  128. YS F120 exhaust port
  129. How do I remove the head from a YS 140L engine
  130. Max rpm for ys 120f sc
  131. New YS70
  132. where do i get this exhaust?
  133. ys170dz Fuel tank
  134. help with idle problem on 91AC
  135. ys 1.20 se ?
  136. ys 120 fs or ac ?
  137. 115FZ Crank re assembly
  138. YS DZ140
  139. Piston / Sleeve Clearance
  140. F120
  141. used 91 ST heli engine wont run
  142. 115S fuel consumption
  143. dz 160 engine problem
  144. Pre-buy inspection of YS140L
  145. YS 61 Long stroke fuel consumption
  146. YS 115 Muffler Header
  147. YS61-S
  148. Parts for YS .61 long stroke (rear ex)
  149. YS-63 Drive hub
  150. YSDZ 160 cam bearing removal from crankcase
  151. YS 175 CDI Nose Ring
  152. YS 63 overly rich regulator
  153. 120 decreasing rpm
  154. Muffler keeps loosening up
  155. fuel leaking out carb? 120fs
  156. 110 FZ pushrod tubes
  157. YS 70FZ 16-6 Prop?
  158. YS CDI RF interference
  159. YS-115 Rough on Idle
  160. YS 91AC CDI - Lubrication
  161. YS120SF Needs Help
  162. YS-FZ110 dies on idle only in flight
  163. YS 91AC
  164. YS115 wont start
  165. ys 91 ac question
  166. YS 170 regulator
  167. YS 70 loading up
  168. ys fz110 (not the s version)
  169. New YS 115s runs then dies over and over.
  170. help with YS info
  171. Identification of YS 120
  172. Y 140 no compression
  173. YS 120SF crankshaft questions
  174. FZ70 Disassembly
  175. Proper Service After 5yr Storage
  176. Ys fz70
  177. YS 160/170 to gasser?
  178. Ys FZ 110S, just want to make sure.
  179. ys 170 - shutting down
  180. YS F120 Crankshaft Confusion...explain ? ?
  181. dz160 stop in Loud noise
  182. 91 ac idle problem
  183. Badly running YS 63S
  184. Where are the 91FZ's??
  185. YS-120SF VS YS-120NC
  186. YS 110s problems
  187. YS Super Mount 3
  188. Is this muffler ok?
  189. 3 or 4 blade prop for ys fz 91?
  190. YS 140 Sport Idle Problems
  191. YS 140 Sport
  192. YS 115s and fuel consuption
  193. Wanted: YS 45 Carb. body
  194. F1.20 head replacement
  195. Question re smoke trail YSFZ 1.10
  196. YS 110s problem
  197. ys 91 4 stroke
  198. YS 120 No Pressure from Pump.
  199. yamada email
  200. Striped out muffler caseing
  201. YS 160DZ Help
  202. 160 vs 170 cdi much difference?
  203. YS Repair Facility
  204. Troubled YS110S
  205. Old YS.60 2S-need directions
  206. YS 1.40L sensitive needle
  207. New FZ-110s fuel problems
  208. .91 AC
  209. YS FZ 70S a few questions
  210. YS 110FZ throttle barrel setting
  211. Ys fz 91
  212. Dz 160 fuel pump prime
  213. YS .60/.61 two stroke parts source?
  214. 61 and 80 Heli engine Qs...
  215. 160 down on power
  216. PETEC - HELP with YS parts and service
  217. What fuel tank for FZ .91?
  218. YS Heli engines for Pattern?
  219. Aftermarket venturi for YS 170 ?
  220. YS 110S won't prime
  221. YS 170 CDI on low nitro
  222. 170 DZ
  223. 91AC fuel running out carb and exhaust
  224. Could not start NIB YS115S
  225. YS 115 Leaking airbox
  226. YSE0895 Exhaust Pipe Assembly for YS
  227. YS 110 Full throttle with carb closed
  228. To all YS CDI users
  229. YS 70 prop choice
  230. YS 170 CDI
  231. YX 140L sensitive needle
  232. Which ys 120 is this
  233. Canadian YS engines part retailer ??
  234. how hard I have to close the prop nut ,dz160
  235. Recalcitrant 160
  236. 140s problem
  237. YS170 Setting Up
  238. YS 120AC Dependability Maintenance and tweaks
  239. FZ115 fuel consumption
  240. YS 120 cams
  241. DZ170 Throttle Linkage
  242. YS 91 Pulsating Idle
  243. How to take out cylinder liner of DZ170 ?
  244. HS needle not change maximum rpm dz160
  245. prop apc 17x12w for dz 160
  246. fuel system problem with YS 140s
  247. Backplate HELP
  248. YS 115 strange idle
  249. Best Nitro/OIL/methanol combo for Fz 1.10
  250. YS 1.20 FZ HELP!!!!