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  1. YS 115 flkooding
  2. New 80 four stroke???
  3. Ys 91fz
  4. YS63FZ-S quits in a maneuver
  5. YS 185 cdi zero surging going rich and back firing
  6. Engine size, Proppeller, RPM
  7. After run/storage oil for YS engines
  8. P51-d / ys 115ws or ys 140fz
  9. So what happened to YS (Yamada Mfg)?
  10. ys 120 fz...what prop size to use???
  11. YS 120 F compression
  12. YS FZ 53/70/80 S engines listed at YS Japan
  13. Ys 60 with macs tuned pipe
  14. Y.s. Fz120
  15. YS-120FS Rich Idle
  16. YS 63 won't go above 8,000 rpm
  17. older but seems to be in great shape ys 1.20 sputtering
  18. Drilling piston for
  19. YS 140 quits
  20. ys .45 2cycle
  21. YS FZ110S rebuilt - question on regulator
  22. re-assemble YS110s crankshaft into casing
  23. FZ110S bearings spec
  24. YS 185 won't throttle up.
  25. YS 170 DZ will not idle down
  26. Stuck valves
  27. YS DZ70 fuel draw problems....
  28. YS 175 CDI Negative Push engine dies out
  29. YS DZ70 - Air Bubbles in Fuel Injector Line
  30. Cue The Sombre Music
  31. Synthetic after run oil safe on silicone?
  32. Rear Bearing debris - New Crankcase?
  33. YS set up to run in reverse rotation for twin
  34. YF 120FZ - Valve cover Pressurized?
  35. This section is just a mine of information, thanks to all contributors
  36. Ys dz
  37. YS 53 squeaking
  38. YS 53 repaired
  39. Aluminum beam mount for YS 115
  40. Timing YS-FZ-140
  41. YS CDI ver. 2 - Power Source Selection
  42. YS F-120 RPM recommendations
  43. YS CDI Ver. 2 - RPM Telemetry
  44. Ys fz 91
  45. Ys 115fz s
  46. YS 61-S o-ring needle valve idle adjust
  47. 175FZ fuel system question
  48. us engine repair
  49. ys engine repair
  50. YS F-120 help... parts missing!
  51. YS 45 spare parts frustration
  52. Ys fz 110 prop nut
  53. Ys 61-s
  54. Ys fz63. Won't idle w/o glow igniter
  55. Ys fz63 won't idle without glow igniter
  56. Fz 120
  57. Check valve
  58. ys 110 not Guard low idel
  59. YS110s no response to throttle.
  60. greg bischof
  61. What Head Is This?
  62. I have a question about the DZ185 cdi.
  63. DZ160 Power Comparison
  64. Pulse 60 Saito 100 need more
  65. break in ys dz 170 cdi
  66. YS FZ70S vs DZ70S Difference?
  67. IS YS FZ1.40 TO MUCH POWER FOR Top Flite P51d 60 size?
  68. YS120AC needle valve question
  69. YS FZ110-S Muffler Adapter
  70. YS FZ 140 S Piston Damage.
  71. YS Fz63 disc valve and cylinder head valve sealing info needed
  72. YS 120AC piston design/failure?
  73. ys 63 fuel line pressure
  74. ys63 fuel consumpsion
  75. fz 63s mounting
  76. ys fz3s throttle arm
  77. YS 110S regulator tear down
  78. fuel dripping from carb on 120fz
  79. YS 115 problems
  80. FZ70-S : rotating the regulator
  81. Mid range stumble and dies
  82. Best , no compromise YsFZ140 exhaust setup?
  83. ys 70 pipe
  84. change the prop from 17x12 to 18.1x10
  85. .91 AC Mixture Problems
  86. YS170 fuel tank clunk & break-in
  87. YS50ST Head gasket dramas. need help!
  88. Ys175 cdi
  89. YS FZ 140 Sport Throttle Barrel Seizing
  90. YS 140L surging
  91. 140L compression
  92. ys fz 63 break in
  93. ys 160dz Question ?
  94. New YS Engine "Coming Soon"
  95. ys 170dz cam follower
  96. muffler for YS45FR
  97. When to replace YS bearings
  98. BYRON 30% Heli Fuel?
  99. YS 170 DZ Needle valve and regulator / low speed setting
  100. YS 170 prop - 4 blade?
  101. how do you stop syphoning
  102. to vibrate or not to vibrate...
  103. YS DZ 70
  104. YS45 on Arrow 40
  105. Seating New Bearings in a YS 61-R
  106. YS45FR won't start
  107. YS F120 exhaust port
  108. How do I remove the head from a YS 140L engine
  109. Max rpm for ys 120f sc
  110. New YS70
  111. where do i get this exhaust?
  112. ys170dz Fuel tank
  113. help with idle problem on 91AC
  114. ys 1.20 se ?
  115. ys 120 fs or ac ?
  116. 115FZ Crank re assembly
  117. YS DZ140
  118. Piston / Sleeve Clearance
  119. F120
  120. used 91 ST heli engine wont run
  121. 115S fuel consumption
  122. dz 160 engine problem
  123. Pre-buy inspection of YS140L
  124. YS 61 Long stroke fuel consumption
  125. YS 115 Muffler Header
  126. YS61-S
  127. Parts for YS .61 long stroke (rear ex)
  128. YS-63 Drive hub
  129. YSDZ 160 cam bearing removal from crankcase
  130. YS 175 CDI Nose Ring
  131. YS 63 overly rich regulator
  132. 120 decreasing rpm
  133. Muffler keeps loosening up
  134. fuel leaking out carb? 120fs
  135. 110 FZ pushrod tubes
  136. YS 70FZ 16-6 Prop?
  137. YS CDI RF interference
  138. YS-115 Rough on Idle
  139. YS 91AC CDI - Lubrication
  140. YS120SF Needs Help
  141. YS-FZ110 dies on idle only in flight
  142. YS 91AC
  143. YS115 wont start
  144. ys 91 ac question
  145. YS 170 regulator
  146. YS 70 loading up
  147. ys fz110 (not the s version)
  148. New YS 115s runs then dies over and over.
  149. help with YS info
  150. Identification of YS 120
  151. Y 140 no compression
  152. YS 120SF crankshaft questions
  153. FZ70 Disassembly
  154. Proper Service After 5yr Storage
  155. Ys fz70
  156. YS 160/170 to gasser?
  157. Ys FZ 110S, just want to make sure.
  158. ys 170 - shutting down
  159. YS F120 Crankshaft Confusion...explain ? ?
  160. dz160 stop in Loud noise
  161. 91 ac idle problem
  162. Badly running YS 63S
  163. Where are the 91FZ's??
  164. YS-120SF VS YS-120NC
  165. YS 110s problems
  166. YS Super Mount 3
  167. Is this muffler ok?
  168. 3 or 4 blade prop for ys fz 91?
  169. YS 140 Sport Idle Problems
  170. YS 140 Sport
  171. YS 115s and fuel consuption
  172. Wanted: YS 45 Carb. body
  173. F1.20 head replacement
  174. Question re smoke trail YSFZ 1.10
  175. YS 110s problem
  176. ys 91 4 stroke
  177. YS 120 No Pressure from Pump.
  178. yamada email
  179. Striped out muffler caseing
  180. YS 160DZ Help
  181. 160 vs 170 cdi much difference?
  182. YS Repair Facility
  183. Troubled YS110S
  184. Old YS.60 2S-need directions
  185. YS 1.40L sensitive needle
  186. New FZ-110s fuel problems
  187. .91 AC
  188. YS FZ 70S a few questions
  189. YS 110FZ throttle barrel setting
  190. Ys fz 91
  191. Dz 160 fuel pump prime
  192. YS .60/.61 two stroke parts source?
  193. 61 and 80 Heli engine Qs...
  194. 160 down on power
  195. PETEC - HELP with YS parts and service
  196. What fuel tank for FZ .91?
  197. YS Heli engines for Pattern?
  198. Aftermarket venturi for YS 170 ?
  199. YS 110S won't prime
  200. YS 170 CDI on low nitro
  201. 170 DZ
  202. 91AC fuel running out carb and exhaust
  203. Could not start NIB YS115S
  204. YS 115 Leaking airbox
  205. YSE0895 Exhaust Pipe Assembly for YS
  206. YS 110 Full throttle with carb closed
  207. To all YS CDI users
  208. YS 70 prop choice
  209. YS 170 CDI
  210. YX 140L sensitive needle
  211. Which ys 120 is this
  212. Canadian YS engines part retailer ??
  213. how hard I have to close the prop nut ,dz160
  214. Recalcitrant 160
  215. 140s problem
  216. YS170 Setting Up
  217. YS 120AC Dependability Maintenance and tweaks
  218. FZ115 fuel consumption
  219. YS 120 cams
  220. DZ170 Throttle Linkage
  221. YS 91 Pulsating Idle
  222. How to take out cylinder liner of DZ170 ?
  223. HS needle not change maximum rpm dz160
  224. prop apc 17x12w for dz 160
  225. fuel system problem with YS 140s
  226. Backplate HELP
  227. YS 115 strange idle
  228. Best Nitro/OIL/methanol combo for Fz 1.10
  229. YS 1.20 FZ HELP!!!!
  230. YS115
  231. Regulator direction
  232. YS Setup and Photos
  233. 120FZ and drop of fuel
  234. YS110 FZ prop
  235. YS 1.10 FZ trouble since repair
  236. YS63 tickover
  237. Changing ring in YS1.10
  238. how to fill
  239. YS 70 REAR BEARINGS
  240. Rules for Posting in the YS Forum (Please Read)
  241. YS 110fz lacks of power
  242. YS-175 CDI ?
  243. AFTERRUN OIL MISTAKE...
  244. Tips fpr YS90 and 110
  245. Inverted ys120
  246. Starting my YS 1.40L
  247. Something new in the works from YS
  248. YS Fuel
  249. ys 115
  250. When to replace the bearings

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