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  1. Dz140
  2. YS 115 flkooding
  3. New 80 four stroke???
  4. Ys 91fz
  5. YS63FZ-S quits in a maneuver
  6. YS 185 cdi zero surging going rich and back firing
  7. Engine size, Proppeller, RPM
  8. After run/storage oil for YS engines
  9. P51-d / ys 115ws or ys 140fz
  10. So what happened to YS (Yamada Mfg)?
  11. ys 120 fz...what prop size to use???
  12. YS 120 F compression
  13. YS FZ 53/70/80 S engines listed at YS Japan
  14. Ys 60 with macs tuned pipe
  15. Y.s. Fz120
  16. YS-120FS Rich Idle
  17. YS 63 won't go above 8,000 rpm
  18. older but seems to be in great shape ys 1.20 sputtering
  19. Drilling piston for
  20. YS 140 quits
  21. ys .45 2cycle
  22. YS FZ110S rebuilt - question on regulator
  23. re-assemble YS110s crankshaft into casing
  24. FZ110S bearings spec
  25. YS 185 won't throttle up.
  26. YS 170 DZ will not idle down
  27. Stuck valves
  28. YS DZ70 fuel draw problems....
  29. YS 175 CDI Negative Push engine dies out
  30. YS DZ70 - Air Bubbles in Fuel Injector Line
  31. Cue The Sombre Music
  32. Synthetic after run oil safe on silicone?
  33. Rear Bearing debris - New Crankcase?
  34. YS set up to run in reverse rotation for twin
  35. YF 120FZ - Valve cover Pressurized?
  36. This section is just a mine of information, thanks to all contributors
  37. Ys dz
  38. YS 53 squeaking
  39. YS 53 repaired
  40. Aluminum beam mount for YS 115
  41. Timing YS-FZ-140
  42. YS CDI ver. 2 - Power Source Selection
  43. YS F-120 RPM recommendations
  44. YS CDI Ver. 2 - RPM Telemetry
  45. Ys fz 91
  46. Ys 115fz s
  47. YS 61-S o-ring needle valve idle adjust
  48. 175FZ fuel system question
  49. us engine repair
  50. ys engine repair
  51. YS F-120 help... parts missing!
  52. YS 45 spare parts frustration
  53. Ys fz 110 prop nut
  54. Ys 61-s
  55. Ys fz63. Won't idle w/o glow igniter
  56. Ys fz63 won't idle without glow igniter
  57. Fz 120
  58. Check valve
  59. ys 110 not Guard low idel
  60. YS110s no response to throttle.
  61. greg bischof
  62. What Head Is This?
  63. I have a question about the DZ185 cdi.
  64. DZ160 Power Comparison
  65. Pulse 60 Saito 100 need more
  66. break in ys dz 170 cdi
  67. YS FZ70S vs DZ70S Difference?
  68. IS YS FZ1.40 TO MUCH POWER FOR Top Flite P51d 60 size?
  69. YS120AC needle valve question
  70. YS FZ110-S Muffler Adapter
  71. YS FZ 140 S Piston Damage.
  72. YS Fz63 disc valve and cylinder head valve sealing info needed
  73. YS 120AC piston design/failure?
  74. ys 63 fuel line pressure
  75. ys63 fuel consumpsion
  76. fz 63s mounting
  77. ys fz3s throttle arm
  78. YS 110S regulator tear down
  79. fuel dripping from carb on 120fz
  80. YS 115 problems
  81. FZ70-S : rotating the regulator
  82. Mid range stumble and dies
  83. Best , no compromise YsFZ140 exhaust setup?
  84. ys 70 pipe
  85. change the prop from 17x12 to 18.1x10
  86. .91 AC Mixture Problems
  87. YS170 fuel tank clunk & break-in
  88. YS50ST Head gasket dramas. need help!
  89. Ys175 cdi
  90. YS FZ 140 Sport Throttle Barrel Seizing
  91. YS 140L surging
  92. 140L compression
  93. ys fz 63 break in
  94. ys 160dz Question ?
  95. New YS Engine "Coming Soon"
  96. ys 170dz cam follower
  97. muffler for YS45FR
  98. When to replace YS bearings
  99. BYRON 30% Heli Fuel?
  100. YS 170 DZ Needle valve and regulator / low speed setting
  101. YS 170 prop - 4 blade?
  102. how do you stop syphoning
  103. to vibrate or not to vibrate...
  104. YS DZ 70
  105. YS45 on Arrow 40
  106. Seating New Bearings in a YS 61-R
  107. YS45FR won't start
  108. YS F120 exhaust port
  109. How do I remove the head from a YS 140L engine
  110. Max rpm for ys 120f sc
  111. New YS70
  112. where do i get this exhaust?
  113. ys170dz Fuel tank
  114. help with idle problem on 91AC
  115. ys 1.20 se ?
  116. ys 120 fs or ac ?
  117. 115FZ Crank re assembly
  118. YS DZ140
  119. Piston / Sleeve Clearance
  120. F120
  121. used 91 ST heli engine wont run
  122. 115S fuel consumption
  123. dz 160 engine problem
  124. Pre-buy inspection of YS140L
  125. YS 61 Long stroke fuel consumption
  126. YS 115 Muffler Header
  127. YS61-S
  128. Parts for YS .61 long stroke (rear ex)
  129. YS-63 Drive hub
  130. YSDZ 160 cam bearing removal from crankcase
  131. YS 175 CDI Nose Ring
  132. YS 63 overly rich regulator
  133. 120 decreasing rpm
  134. Muffler keeps loosening up
  135. fuel leaking out carb? 120fs
  136. 110 FZ pushrod tubes
  137. YS 70FZ 16-6 Prop?
  138. YS CDI RF interference
  139. YS-115 Rough on Idle
  140. YS 91AC CDI - Lubrication
  141. YS120SF Needs Help
  142. YS-FZ110 dies on idle only in flight
  143. YS 91AC
  144. YS115 wont start
  145. ys 91 ac question
  146. YS 170 regulator
  147. YS 70 loading up
  148. ys fz110 (not the s version)
  149. New YS 115s runs then dies over and over.
  150. help with YS info
  151. Identification of YS 120
  152. Y 140 no compression
  153. YS 120SF crankshaft questions
  154. FZ70 Disassembly
  155. Proper Service After 5yr Storage
  156. Ys fz70
  157. YS 160/170 to gasser?
  158. Ys FZ 110S, just want to make sure.
  159. ys 170 - shutting down
  160. YS F120 Crankshaft Confusion...explain ? ?
  161. dz160 stop in Loud noise
  162. 91 ac idle problem
  163. Badly running YS 63S
  164. Where are the 91FZ's??
  165. YS-120SF VS YS-120NC
  166. YS 110s problems
  167. YS Super Mount 3
  168. Is this muffler ok?
  169. 3 or 4 blade prop for ys fz 91?
  170. YS 140 Sport Idle Problems
  171. YS 140 Sport
  172. YS 115s and fuel consuption
  173. Wanted: YS 45 Carb. body
  174. F1.20 head replacement
  175. Question re smoke trail YSFZ 1.10
  176. YS 110s problem
  177. ys 91 4 stroke
  178. YS 120 No Pressure from Pump.
  179. yamada email
  180. Striped out muffler caseing
  181. YS 160DZ Help
  182. 160 vs 170 cdi much difference?
  183. YS Repair Facility
  184. Troubled YS110S
  185. Old YS.60 2S-need directions
  186. YS 1.40L sensitive needle
  187. New FZ-110s fuel problems
  188. .91 AC
  189. YS FZ 70S a few questions
  190. YS 110FZ throttle barrel setting
  191. Ys fz 91
  192. Dz 160 fuel pump prime
  193. YS .60/.61 two stroke parts source?
  194. 61 and 80 Heli engine Qs...
  195. 160 down on power
  196. PETEC - HELP with YS parts and service
  197. What fuel tank for FZ .91?
  198. YS Heli engines for Pattern?
  199. Aftermarket venturi for YS 170 ?
  200. YS 110S won't prime
  201. YS 170 CDI on low nitro
  202. 170 DZ
  203. 91AC fuel running out carb and exhaust
  204. Could not start NIB YS115S
  205. YS 115 Leaking airbox
  206. YSE0895 Exhaust Pipe Assembly for YS
  207. YS 110 Full throttle with carb closed
  208. To all YS CDI users
  209. YS 70 prop choice
  210. YS 170 CDI
  211. YX 140L sensitive needle
  212. Which ys 120 is this
  213. Canadian YS engines part retailer ??
  214. how hard I have to close the prop nut ,dz160
  215. Recalcitrant 160
  216. 140s problem
  217. YS170 Setting Up
  218. YS 120AC Dependability Maintenance and tweaks
  219. FZ115 fuel consumption
  220. YS 120 cams
  221. DZ170 Throttle Linkage
  222. YS 91 Pulsating Idle
  223. How to take out cylinder liner of DZ170 ?
  224. HS needle not change maximum rpm dz160
  225. prop apc 17x12w for dz 160
  226. fuel system problem with YS 140s
  227. Backplate HELP
  228. YS 115 strange idle
  229. Best Nitro/OIL/methanol combo for Fz 1.10
  230. YS 1.20 FZ HELP!!!!
  231. YS115
  232. Regulator direction
  233. YS Setup and Photos
  234. 120FZ and drop of fuel
  235. YS110 FZ prop
  236. YS 1.10 FZ trouble since repair
  237. YS63 tickover
  238. Changing ring in YS1.10
  239. how to fill
  240. YS 70 REAR BEARINGS
  241. Rules for Posting in the YS Forum (Please Read)
  242. YS 110fz lacks of power
  243. YS-175 CDI ?
  244. AFTERRUN OIL MISTAKE...
  245. Tips fpr YS90 and 110
  246. Inverted ys120
  247. Starting my YS 1.40L
  248. Something new in the works from YS
  249. YS Fuel
  250. ys 115

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