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  1. ys 120 excessive smoke
  2. YS 140 DINGO how set the gap disc valve?
  3. YS 91 AC or new YS 80fz for Warbird Racing
  4. YS FZ 63 Low RPM
  5. YS91FZ, need help with the Regulator setting.
  6. 185 dz cdi - air in the fuel line between injector and throttle body
  7. DZ 170 Questions
  8. Ys 120 muffler thread
  9. ys63s quits running
  10. YS 185 Prop torque settings
  11. ys 63 metal sounds
  12. Need a little help sourcing a part
  13. YS 61 ar long stroke
  14. Dz140
  15. YS 115 flkooding
  16. New 80 four stroke???
  17. Ys 91fz
  18. YS63FZ-S quits in a maneuver
  19. YS 185 cdi zero surging going rich and back firing
  20. Engine size, Proppeller, RPM
  21. After run/storage oil for YS engines
  22. P51-d / ys 115ws or ys 140fz
  23. So what happened to YS (Yamada Mfg)?
  24. ys 120 fz...what prop size to use???
  25. YS 120 F compression
  26. YS FZ 53/70/80 S engines listed at YS Japan
  27. Ys 60 with macs tuned pipe
  28. Y.s. Fz120
  29. YS-120FS Rich Idle
  30. YS 63 won't go above 8,000 rpm
  31. older but seems to be in great shape ys 1.20 sputtering
  32. Drilling piston for
  33. YS 140 quits
  34. ys .45 2cycle
  35. YS FZ110S rebuilt - question on regulator
  36. re-assemble YS110s crankshaft into casing
  37. FZ110S bearings spec
  38. YS 185 won't throttle up.
  39. YS 170 DZ will not idle down
  40. Stuck valves
  41. YS DZ70 fuel draw problems....
  42. YS 175 CDI Negative Push engine dies out
  43. YS DZ70 - Air Bubbles in Fuel Injector Line
  44. Cue The Sombre Music
  45. Synthetic after run oil safe on silicone?
  46. Rear Bearing debris - New Crankcase?
  47. YS set up to run in reverse rotation for twin
  48. YF 120FZ - Valve cover Pressurized?
  49. This section is just a mine of information, thanks to all contributors
  50. Ys dz
  51. YS 53 squeaking
  52. YS 53 repaired
  53. Aluminum beam mount for YS 115
  54. Timing YS-FZ-140
  55. YS CDI ver. 2 - Power Source Selection
  56. YS F-120 RPM recommendations
  57. YS CDI Ver. 2 - RPM Telemetry
  58. Ys fz 91
  59. Ys 115fz s
  60. YS 61-S o-ring needle valve idle adjust
  61. 175FZ fuel system question
  62. us engine repair
  63. ys engine repair
  64. YS F-120 help... parts missing!
  65. YS 45 spare parts frustration
  66. Ys fz 110 prop nut
  67. Ys 61-s
  68. Ys fz63. Won't idle w/o glow igniter
  69. Ys fz63 won't idle without glow igniter
  70. Fz 120
  71. Check valve
  72. ys 110 not Guard low idel
  73. YS110s no response to throttle.
  74. greg bischof
  75. What Head Is This?
  76. I have a question about the DZ185 cdi.
  77. DZ160 Power Comparison
  78. Pulse 60 Saito 100 need more
  79. break in ys dz 170 cdi
  80. YS FZ70S vs DZ70S Difference?
  81. IS YS FZ1.40 TO MUCH POWER FOR Top Flite P51d 60 size?
  82. YS120AC needle valve question
  83. YS FZ110-S Muffler Adapter
  84. YS FZ 140 S Piston Damage.
  85. YS Fz63 disc valve and cylinder head valve sealing info needed
  86. YS 120AC piston design/failure?
  87. ys 63 fuel line pressure
  88. ys63 fuel consumpsion
  89. fz 63s mounting
  90. ys fz3s throttle arm
  91. YS 110S regulator tear down
  92. fuel dripping from carb on 120fz
  93. YS 115 problems
  94. FZ70-S : rotating the regulator
  95. Mid range stumble and dies
  96. Best , no compromise YsFZ140 exhaust setup?
  97. ys 70 pipe
  98. change the prop from 17x12 to 18.1x10
  99. .91 AC Mixture Problems
  100. YS170 fuel tank clunk & break-in
  101. YS50ST Head gasket dramas. need help!
  102. Ys175 cdi
  103. YS FZ 140 Sport Throttle Barrel Seizing
  104. YS 140L surging
  105. 140L compression
  106. ys fz 63 break in
  107. ys 160dz Question ?
  108. New YS Engine "Coming Soon"
  109. ys 170dz cam follower
  110. muffler for YS45FR
  111. When to replace YS bearings
  112. BYRON 30% Heli Fuel?
  113. YS 170 DZ Needle valve and regulator / low speed setting
  114. YS 170 prop - 4 blade?
  115. how do you stop syphoning
  116. to vibrate or not to vibrate...
  117. YS DZ 70
  118. YS45 on Arrow 40
  119. Seating New Bearings in a YS 61-R
  120. YS45FR won't start
  121. YS F120 exhaust port
  122. How do I remove the head from a YS 140L engine
  123. Max rpm for ys 120f sc
  124. New YS70
  125. where do i get this exhaust?
  126. ys170dz Fuel tank
  127. help with idle problem on 91AC
  128. ys 1.20 se ?
  129. ys 120 fs or ac ?
  130. 115FZ Crank re assembly
  131. YS DZ140
  132. Piston / Sleeve Clearance
  133. F120
  134. used 91 ST heli engine wont run
  135. 115S fuel consumption
  136. dz 160 engine problem
  137. Pre-buy inspection of YS140L
  138. YS 61 Long stroke fuel consumption
  139. YS 115 Muffler Header
  140. YS61-S
  141. Parts for YS .61 long stroke (rear ex)
  142. YS-63 Drive hub
  143. YSDZ 160 cam bearing removal from crankcase
  144. YS 175 CDI Nose Ring
  145. YS 63 overly rich regulator
  146. 120 decreasing rpm
  147. Muffler keeps loosening up
  148. fuel leaking out carb? 120fs
  149. 110 FZ pushrod tubes
  150. YS 70FZ 16-6 Prop?
  151. YS CDI RF interference
  152. YS-115 Rough on Idle
  153. YS 91AC CDI - Lubrication
  154. YS120SF Needs Help
  155. YS-FZ110 dies on idle only in flight
  156. YS 91AC
  157. YS115 wont start
  158. ys 91 ac question
  159. YS 170 regulator
  160. YS 70 loading up
  161. ys fz110 (not the s version)
  162. New YS 115s runs then dies over and over.
  163. help with YS info
  164. Identification of YS 120
  165. Y 140 no compression
  166. YS 120SF crankshaft questions
  167. FZ70 Disassembly
  168. Proper Service After 5yr Storage
  169. Ys fz70
  170. YS 160/170 to gasser?
  171. Ys FZ 110S, just want to make sure.
  172. ys 170 - shutting down
  173. YS F120 Crankshaft Confusion...explain ? ?
  174. dz160 stop in Loud noise
  175. 91 ac idle problem
  176. Badly running YS 63S
  177. Where are the 91FZ's??
  178. YS-120SF VS YS-120NC
  179. YS 110s problems
  180. YS Super Mount 3
  181. Is this muffler ok?
  182. 3 or 4 blade prop for ys fz 91?
  183. YS 140 Sport Idle Problems
  184. YS 140 Sport
  185. YS 115s and fuel consuption
  186. Wanted: YS 45 Carb. body
  187. F1.20 head replacement
  188. Question re smoke trail YSFZ 1.10
  189. YS 110s problem
  190. ys 91 4 stroke
  191. YS 120 No Pressure from Pump.
  192. yamada email
  193. Striped out muffler caseing
  194. YS 160DZ Help
  195. 160 vs 170 cdi much difference?
  196. YS Repair Facility
  197. Troubled YS110S
  198. Old YS.60 2S-need directions
  199. YS 1.40L sensitive needle
  200. New FZ-110s fuel problems
  201. .91 AC
  202. YS FZ 70S a few questions
  203. YS 110FZ throttle barrel setting
  204. Ys fz 91
  205. Dz 160 fuel pump prime
  206. YS .60/.61 two stroke parts source?
  207. 61 and 80 Heli engine Qs...
  208. 160 down on power
  209. PETEC - HELP with YS parts and service
  210. What fuel tank for FZ .91?
  211. YS Heli engines for Pattern?
  212. Aftermarket venturi for YS 170 ?
  213. YS 110S won't prime
  214. YS 170 CDI on low nitro
  215. 170 DZ
  216. 91AC fuel running out carb and exhaust
  217. Could not start NIB YS115S
  218. YS 115 Leaking airbox
  219. YSE0895 Exhaust Pipe Assembly for YS
  220. YS 110 Full throttle with carb closed
  221. To all YS CDI users
  222. YS 70 prop choice
  223. YS 170 CDI
  224. YX 140L sensitive needle
  225. Which ys 120 is this
  226. Canadian YS engines part retailer ??
  227. how hard I have to close the prop nut ,dz160
  228. Recalcitrant 160
  229. 140s problem
  230. YS170 Setting Up
  231. YS 120AC Dependability Maintenance and tweaks
  232. FZ115 fuel consumption
  233. YS 120 cams
  234. DZ170 Throttle Linkage
  235. YS 91 Pulsating Idle
  236. How to take out cylinder liner of DZ170 ?
  237. HS needle not change maximum rpm dz160
  238. prop apc 17x12w for dz 160
  239. fuel system problem with YS 140s
  240. Backplate HELP
  241. YS 115 strange idle
  242. Best Nitro/OIL/methanol combo for Fz 1.10
  243. YS 1.20 FZ HELP!!!!
  244. YS115
  245. Regulator direction
  246. YS Setup and Photos
  247. 120FZ and drop of fuel
  248. YS110 FZ prop
  249. YS 1.10 FZ trouble since repair
  250. YS63 tickover