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  1. DZ 160 cdi flooded crankcase?
  2. What's difference between YS185DZ and YS175FZ
  3. YS 63S Surges Above Half Throttle
  4. DZ160 won't shut down
  5. FZ-140 flooding
  6. Running in a new YS
  7. Difficult to start YS FZ115WS by electirc starter
  8. YS 91AC needle valve
  9. 110 fz sudden stop and compression on every stroke
  10. 53 available again?????
  11. How to buy YS FZ115-WS out of US?
  12. YS 140 fz flooding out
  13. Info about this YS please
  14. What is the fix for a rich mid range in a YS 120NC
  15. YS63FZ-S Valve Seats
  16. Valve retainer diameter
  17. Ys fz80 not available?
  18. ys 120 excessive smoke
  19. YS 140 DINGO how set the gap disc valve?
  20. YS 91 AC or new YS 80fz for Warbird Racing
  21. YS FZ 63 Low RPM
  22. YS91FZ, need help with the Regulator setting.
  23. 185 dz cdi - air in the fuel line between injector and throttle body
  24. DZ 170 Questions
  25. Ys 120 muffler thread
  26. ys63s quits running
  27. YS 185 Prop torque settings
  28. ys 63 metal sounds
  29. Need a little help sourcing a part
  30. YS 61 ar long stroke
  31. Dz140
  32. YS 115 flkooding
  33. New 80 four stroke???
  34. Ys 91fz
  35. YS63FZ-S quits in a maneuver
  36. YS 185 cdi zero surging going rich and back firing
  37. Engine size, Proppeller, RPM
  38. After run/storage oil for YS engines
  39. P51-d / ys 115ws or ys 140fz
  40. So what happened to YS (Yamada Mfg)?
  41. ys 120 fz...what prop size to use???
  42. YS 120 F compression
  43. YS FZ 53/70/80 S engines listed at YS Japan
  44. Ys 60 with macs tuned pipe
  45. Y.s. Fz120
  46. YS-120FS Rich Idle
  47. YS 63 won't go above 8,000 rpm
  48. older but seems to be in great shape ys 1.20 sputtering
  49. Drilling piston for
  50. YS 140 quits
  51. ys .45 2cycle
  52. YS FZ110S rebuilt - question on regulator
  53. re-assemble YS110s crankshaft into casing
  54. FZ110S bearings spec
  55. YS 185 won't throttle up.
  56. YS 170 DZ will not idle down
  57. Stuck valves
  58. YS DZ70 fuel draw problems....
  59. YS 175 CDI Negative Push engine dies out
  60. YS DZ70 - Air Bubbles in Fuel Injector Line
  61. Cue The Sombre Music
  62. Synthetic after run oil safe on silicone?
  63. Rear Bearing debris - New Crankcase?
  64. YS set up to run in reverse rotation for twin
  65. YF 120FZ - Valve cover Pressurized?
  66. This section is just a mine of information, thanks to all contributors
  67. Ys dz
  68. YS 53 squeaking
  69. YS 53 repaired
  70. Aluminum beam mount for YS 115
  71. Timing YS-FZ-140
  72. YS CDI ver. 2 - Power Source Selection
  73. YS F-120 RPM recommendations
  74. YS CDI Ver. 2 - RPM Telemetry
  75. Ys fz 91
  76. Ys 115fz s
  77. YS 61-S o-ring needle valve idle adjust
  78. 175FZ fuel system question
  79. us engine repair
  80. ys engine repair
  81. YS F-120 help... parts missing!
  82. YS 45 spare parts frustration
  83. Ys fz 110 prop nut
  84. Ys 61-s
  85. Ys fz63. Won't idle w/o glow igniter
  86. Ys fz63 won't idle without glow igniter
  87. Fz 120
  88. Check valve
  89. ys 110 not Guard low idel
  90. YS110s no response to throttle.
  91. greg bischof
  92. What Head Is This?
  93. I have a question about the DZ185 cdi.
  94. DZ160 Power Comparison
  95. Pulse 60 Saito 100 need more
  96. break in ys dz 170 cdi
  97. YS FZ70S vs DZ70S Difference?
  98. IS YS FZ1.40 TO MUCH POWER FOR Top Flite P51d 60 size?
  99. YS120AC needle valve question
  100. YS FZ110-S Muffler Adapter
  101. YS FZ 140 S Piston Damage.
  102. YS Fz63 disc valve and cylinder head valve sealing info needed
  103. YS 120AC piston design/failure?
  104. ys 63 fuel line pressure
  105. ys63 fuel consumpsion
  106. fz 63s mounting
  107. ys fz3s throttle arm
  108. YS 110S regulator tear down
  109. fuel dripping from carb on 120fz
  110. YS 115 problems
  111. FZ70-S : rotating the regulator
  112. Mid range stumble and dies
  113. Best , no compromise YsFZ140 exhaust setup?
  114. ys 70 pipe
  115. change the prop from 17x12 to 18.1x10
  116. .91 AC Mixture Problems
  117. YS170 fuel tank clunk & break-in
  118. YS50ST Head gasket dramas. need help!
  119. Ys175 cdi
  120. YS FZ 140 Sport Throttle Barrel Seizing
  121. YS 140L surging
  122. 140L compression
  123. ys fz 63 break in
  124. ys 160dz Question ?
  125. New YS Engine "Coming Soon"
  126. ys 170dz cam follower
  127. muffler for YS45FR
  128. When to replace YS bearings
  129. BYRON 30% Heli Fuel?
  130. YS 170 DZ Needle valve and regulator / low speed setting
  131. YS 170 prop - 4 blade?
  132. how do you stop syphoning
  133. to vibrate or not to vibrate...
  134. YS DZ 70
  135. YS45 on Arrow 40
  136. Seating New Bearings in a YS 61-R
  137. YS45FR won't start
  138. YS F120 exhaust port
  139. How do I remove the head from a YS 140L engine
  140. Max rpm for ys 120f sc
  141. New YS70
  142. where do i get this exhaust?
  143. ys170dz Fuel tank
  144. help with idle problem on 91AC
  145. ys 1.20 se ?
  146. ys 120 fs or ac ?
  147. 115FZ Crank re assembly
  148. YS DZ140
  149. Piston / Sleeve Clearance
  150. F120
  151. used 91 ST heli engine wont run
  152. 115S fuel consumption
  153. dz 160 engine problem
  154. Pre-buy inspection of YS140L
  155. YS 61 Long stroke fuel consumption
  156. YS 115 Muffler Header
  157. YS61-S
  158. Parts for YS .61 long stroke (rear ex)
  159. YS-63 Drive hub
  160. YSDZ 160 cam bearing removal from crankcase
  161. YS 175 CDI Nose Ring
  162. YS 63 overly rich regulator
  163. 120 decreasing rpm
  164. Muffler keeps loosening up
  165. fuel leaking out carb? 120fs
  166. 110 FZ pushrod tubes
  167. YS 70FZ 16-6 Prop?
  168. YS CDI RF interference
  169. YS-115 Rough on Idle
  170. YS 91AC CDI - Lubrication
  171. YS120SF Needs Help
  172. YS-FZ110 dies on idle only in flight
  173. YS 91AC
  174. YS115 wont start
  175. ys 91 ac question
  176. YS 170 regulator
  177. YS 70 loading up
  178. ys fz110 (not the s version)
  179. New YS 115s runs then dies over and over.
  180. help with YS info
  181. Identification of YS 120
  182. Y 140 no compression
  183. YS 120SF crankshaft questions
  184. FZ70 Disassembly
  185. Proper Service After 5yr Storage
  186. Ys fz70
  187. YS 160/170 to gasser?
  188. Ys FZ 110S, just want to make sure.
  189. ys 170 - shutting down
  190. YS F120 Crankshaft Confusion...explain ? ?
  191. dz160 stop in Loud noise
  192. 91 ac idle problem
  193. Badly running YS 63S
  194. Where are the 91FZ's??
  195. YS-120SF VS YS-120NC
  196. YS 110s problems
  197. YS Super Mount 3
  198. Is this muffler ok?
  199. 3 or 4 blade prop for ys fz 91?
  200. YS 140 Sport Idle Problems
  201. YS 140 Sport
  202. YS 115s and fuel consuption
  203. Wanted: YS 45 Carb. body
  204. F1.20 head replacement
  205. Question re smoke trail YSFZ 1.10
  206. YS 110s problem
  207. ys 91 4 stroke
  208. YS 120 No Pressure from Pump.
  209. yamada email
  210. Striped out muffler caseing
  211. YS 160DZ Help
  212. 160 vs 170 cdi much difference?
  213. YS Repair Facility
  214. Troubled YS110S
  215. Old YS.60 2S-need directions
  216. YS 1.40L sensitive needle
  217. New FZ-110s fuel problems
  218. .91 AC
  219. YS FZ 70S a few questions
  220. YS 110FZ throttle barrel setting
  221. Ys fz 91
  222. Dz 160 fuel pump prime
  223. YS .60/.61 two stroke parts source?
  224. 61 and 80 Heli engine Qs...
  225. 160 down on power
  226. PETEC - HELP with YS parts and service
  227. What fuel tank for FZ .91?
  228. YS Heli engines for Pattern?
  229. Aftermarket venturi for YS 170 ?
  230. YS 110S won't prime
  231. YS 170 CDI on low nitro
  232. 170 DZ
  233. 91AC fuel running out carb and exhaust
  234. Could not start NIB YS115S
  235. YS 115 Leaking airbox
  236. YSE0895 Exhaust Pipe Assembly for YS
  237. YS 110 Full throttle with carb closed
  238. To all YS CDI users
  239. YS 70 prop choice
  240. YS 170 CDI
  241. YX 140L sensitive needle
  242. Which ys 120 is this
  243. Canadian YS engines part retailer ??
  244. how hard I have to close the prop nut ,dz160
  245. Recalcitrant 160
  246. 140s problem
  247. YS170 Setting Up
  248. YS 120AC Dependability Maintenance and tweaks
  249. FZ115 fuel consumption
  250. YS 120 cams