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  1. Ys 120 muffler thread
  2. ys63s quits running
  3. YS 185 Prop torque settings
  4. ys 63 metal sounds
  5. Need a little help sourcing a part
  6. YS 61 ar long stroke
  7. Dz140
  8. YS 115 flkooding
  9. New 80 four stroke???
  10. Ys 91fz
  11. YS63FZ-S quits in a maneuver
  12. YS 185 cdi zero surging going rich and back firing
  13. Engine size, Proppeller, RPM
  14. After run/storage oil for YS engines
  15. P51-d / ys 115ws or ys 140fz
  16. So what happened to YS (Yamada Mfg)?
  17. ys 120 fz...what prop size to use???
  18. YS 120 F compression
  19. YS FZ 53/70/80 S engines listed at YS Japan
  20. Ys 60 with macs tuned pipe
  21. Y.s. Fz120
  22. YS-120FS Rich Idle
  23. YS 63 won't go above 8,000 rpm
  24. older but seems to be in great shape ys 1.20 sputtering
  25. Drilling piston for
  26. YS 140 quits
  27. ys .45 2cycle
  28. YS FZ110S rebuilt - question on regulator
  29. re-assemble YS110s crankshaft into casing
  30. FZ110S bearings spec
  31. YS 185 won't throttle up.
  32. YS 170 DZ will not idle down
  33. Stuck valves
  34. YS DZ70 fuel draw problems....
  35. YS 175 CDI Negative Push engine dies out
  36. YS DZ70 - Air Bubbles in Fuel Injector Line
  37. Cue The Sombre Music
  38. Synthetic after run oil safe on silicone?
  39. Rear Bearing debris - New Crankcase?
  40. YS set up to run in reverse rotation for twin
  41. YF 120FZ - Valve cover Pressurized?
  42. This section is just a mine of information, thanks to all contributors
  43. Ys dz
  44. YS 53 squeaking
  45. YS 53 repaired
  46. Aluminum beam mount for YS 115
  47. Timing YS-FZ-140
  48. YS CDI ver. 2 - Power Source Selection
  49. YS F-120 RPM recommendations
  50. YS CDI Ver. 2 - RPM Telemetry
  51. Ys fz 91
  52. Ys 115fz s
  53. YS 61-S o-ring needle valve idle adjust
  54. 175FZ fuel system question
  55. us engine repair
  56. ys engine repair
  57. YS F-120 help... parts missing!
  58. YS 45 spare parts frustration
  59. Ys fz 110 prop nut
  60. Ys 61-s
  61. Ys fz63. Won't idle w/o glow igniter
  62. Ys fz63 won't idle without glow igniter
  63. Fz 120
  64. Check valve
  65. ys 110 not Guard low idel
  66. YS110s no response to throttle.
  67. greg bischof
  68. What Head Is This?
  69. I have a question about the DZ185 cdi.
  70. DZ160 Power Comparison
  71. Pulse 60 Saito 100 need more
  72. break in ys dz 170 cdi
  73. YS FZ70S vs DZ70S Difference?
  74. IS YS FZ1.40 TO MUCH POWER FOR Top Flite P51d 60 size?
  75. YS120AC needle valve question
  76. YS FZ110-S Muffler Adapter
  77. YS FZ 140 S Piston Damage.
  78. YS Fz63 disc valve and cylinder head valve sealing info needed
  79. YS 120AC piston design/failure?
  80. ys 63 fuel line pressure
  81. ys63 fuel consumpsion
  82. fz 63s mounting
  83. ys fz3s throttle arm
  84. YS 110S regulator tear down
  85. fuel dripping from carb on 120fz
  86. YS 115 problems
  87. FZ70-S : rotating the regulator
  88. Mid range stumble and dies
  89. Best , no compromise YsFZ140 exhaust setup?
  90. ys 70 pipe
  91. change the prop from 17x12 to 18.1x10
  92. .91 AC Mixture Problems
  93. YS170 fuel tank clunk & break-in
  94. YS50ST Head gasket dramas. need help!
  95. Ys175 cdi
  96. YS FZ 140 Sport Throttle Barrel Seizing
  97. YS 140L surging
  98. 140L compression
  99. ys fz 63 break in
  100. ys 160dz Question ?
  101. New YS Engine "Coming Soon"
  102. ys 170dz cam follower
  103. muffler for YS45FR
  104. When to replace YS bearings
  105. BYRON 30% Heli Fuel?
  106. YS 170 DZ Needle valve and regulator / low speed setting
  107. YS 170 prop - 4 blade?
  108. how do you stop syphoning
  109. to vibrate or not to vibrate...
  110. YS DZ 70
  111. YS45 on Arrow 40
  112. Seating New Bearings in a YS 61-R
  113. YS45FR won't start
  114. YS F120 exhaust port
  115. How do I remove the head from a YS 140L engine
  116. Max rpm for ys 120f sc
  117. New YS70
  118. where do i get this exhaust?
  119. ys170dz Fuel tank
  120. help with idle problem on 91AC
  121. ys 1.20 se ?
  122. ys 120 fs or ac ?
  123. 115FZ Crank re assembly
  124. YS DZ140
  125. Piston / Sleeve Clearance
  126. F120
  127. used 91 ST heli engine wont run
  128. 115S fuel consumption
  129. dz 160 engine problem
  130. Pre-buy inspection of YS140L
  131. YS 61 Long stroke fuel consumption
  132. YS 115 Muffler Header
  133. YS61-S
  134. Parts for YS .61 long stroke (rear ex)
  135. YS-63 Drive hub
  136. YSDZ 160 cam bearing removal from crankcase
  137. YS 175 CDI Nose Ring
  138. YS 63 overly rich regulator
  139. 120 decreasing rpm
  140. Muffler keeps loosening up
  141. fuel leaking out carb? 120fs
  142. 110 FZ pushrod tubes
  143. YS 70FZ 16-6 Prop?
  144. YS CDI RF interference
  145. YS-115 Rough on Idle
  146. YS 91AC CDI - Lubrication
  147. YS120SF Needs Help
  148. YS-FZ110 dies on idle only in flight
  149. YS 91AC
  150. YS115 wont start
  151. ys 91 ac question
  152. YS 170 regulator
  153. YS 70 loading up
  154. ys fz110 (not the s version)
  155. New YS 115s runs then dies over and over.
  156. help with YS info
  157. Identification of YS 120
  158. Y 140 no compression
  159. YS 120SF crankshaft questions
  160. FZ70 Disassembly
  161. Proper Service After 5yr Storage
  162. Ys fz70
  163. YS 160/170 to gasser?
  164. Ys FZ 110S, just want to make sure.
  165. ys 170 - shutting down
  166. YS F120 Crankshaft Confusion...explain ? ?
  167. dz160 stop in Loud noise
  168. 91 ac idle problem
  169. Badly running YS 63S
  170. Where are the 91FZ's??
  171. YS-120SF VS YS-120NC
  172. YS 110s problems
  173. YS Super Mount 3
  174. Is this muffler ok?
  175. 3 or 4 blade prop for ys fz 91?
  176. YS 140 Sport Idle Problems
  177. YS 140 Sport
  178. YS 115s and fuel consuption
  179. Wanted: YS 45 Carb. body
  180. F1.20 head replacement
  181. Question re smoke trail YSFZ 1.10
  182. YS 110s problem
  183. ys 91 4 stroke
  184. YS 120 No Pressure from Pump.
  185. yamada email
  186. Striped out muffler caseing
  187. YS 160DZ Help
  188. 160 vs 170 cdi much difference?
  189. YS Repair Facility
  190. Troubled YS110S
  191. Old YS.60 2S-need directions
  192. YS 1.40L sensitive needle
  193. New FZ-110s fuel problems
  194. .91 AC
  195. YS FZ 70S a few questions
  196. YS 110FZ throttle barrel setting
  197. Ys fz 91
  198. Dz 160 fuel pump prime
  199. YS .60/.61 two stroke parts source?
  200. 61 and 80 Heli engine Qs...
  201. 160 down on power
  202. PETEC - HELP with YS parts and service
  203. What fuel tank for FZ .91?
  204. YS Heli engines for Pattern?
  205. Aftermarket venturi for YS 170 ?
  206. YS 110S won't prime
  207. YS 170 CDI on low nitro
  208. 170 DZ
  209. 91AC fuel running out carb and exhaust
  210. Could not start NIB YS115S
  211. YS 115 Leaking airbox
  212. YSE0895 Exhaust Pipe Assembly for YS
  213. YS 110 Full throttle with carb closed
  214. To all YS CDI users
  215. YS 70 prop choice
  216. YS 170 CDI
  217. YX 140L sensitive needle
  218. Which ys 120 is this
  219. Canadian YS engines part retailer ??
  220. how hard I have to close the prop nut ,dz160
  221. Recalcitrant 160
  222. 140s problem
  223. YS170 Setting Up
  224. YS 120AC Dependability Maintenance and tweaks
  225. FZ115 fuel consumption
  226. YS 120 cams
  227. DZ170 Throttle Linkage
  228. YS 91 Pulsating Idle
  229. How to take out cylinder liner of DZ170 ?
  230. HS needle not change maximum rpm dz160
  231. prop apc 17x12w for dz 160
  232. fuel system problem with YS 140s
  233. Backplate HELP
  234. YS 115 strange idle
  235. Best Nitro/OIL/methanol combo for Fz 1.10
  236. YS 1.20 FZ HELP!!!!
  237. YS115
  238. Regulator direction
  239. YS Setup and Photos
  240. 120FZ and drop of fuel
  241. YS110 FZ prop
  242. YS 1.10 FZ trouble since repair
  243. YS63 tickover
  244. Changing ring in YS1.10
  245. how to fill
  246. YS 70 REAR BEARINGS
  247. Rules for Posting in the YS Forum (Please Read)
  248. YS 110fz lacks of power
  249. YS-175 CDI ?
  250. AFTERRUN OIL MISTAKE...

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