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  1. FZ53 suspect regulator
  2. YS120 YS140 Documentation - Setup - Maintenancee
  3. YS91AC Carb cleaning
  4. YS FZ63 and FZ110S Problem Children
  5. Old YS 120 f
  6. ys 110s lean out problems
  7. Is it manditory to use a gas ported piston?
  8. Weston Genesis Aero Pipes for YS 61R / YS 61 S Classic Engines ?
  9. YS engine help
  10. YS 120SF bent crankshaft repair
  11. YS170 Sudden Dead Stop from Fast Idle
  12. YS engine service Australia
  13. YS 140 and up opinion
  14. YS 115S crank replace
  15. YS-185 CDI Sensor problem
  16. Ys91ac fuel selection
  17. 45 FS muffler mounting screw size
  18. FZ110 excessive smoking
  19. Propeller choice for 115S
  20. YS Newbie Exhaust Question
  21. YS direct 80, 115 Mufflers
  22. DZ 200 CDI NEW, Problem in mid rang
  23. YS 140L wont throttle up
  24. Request for update
  25. YS 110 dripping fuel from air chamber
  26. Black oil from Hatori tuned muffler
  27. About factory setting for "low speed needle valve" of YS115WS
  28. YS FZ-175s Tuning
  29. YS 110S Tuning
  30. DZ 160 cdi flooded crankcase?
  31. What's difference between YS185DZ and YS175FZ
  32. YS 63S Surges Above Half Throttle
  33. DZ160 won't shut down
  34. FZ-140 flooding
  35. Running in a new YS
  36. Difficult to start YS FZ115WS by electirc starter
  37. YS 91AC needle valve
  38. 110 fz sudden stop and compression on every stroke
  39. 53 available again?????
  40. How to buy YS FZ115-WS out of US?
  41. YS 140 fz flooding out
  42. Info about this YS please
  43. What is the fix for a rich mid range in a YS 120NC
  44. YS63FZ-S Valve Seats
  45. Valve retainer diameter
  46. Ys fz80 not available?
  47. ys 120 excessive smoke
  48. YS 140 DINGO how set the gap disc valve?
  49. YS 91 AC or new YS 80fz for Warbird Racing
  50. YS FZ 63 Low RPM
  51. YS91FZ, need help with the Regulator setting.
  52. 185 dz cdi - air in the fuel line between injector and throttle body
  53. DZ 170 Questions
  54. Ys 120 muffler thread
  55. ys63s quits running
  56. YS 185 Prop torque settings
  57. ys 63 metal sounds
  58. Need a little help sourcing a part
  59. YS 61 ar long stroke
  60. Dz140
  61. YS 115 flkooding
  62. New 80 four stroke???
  63. Ys 91fz
  64. YS63FZ-S quits in a maneuver
  65. YS 185 cdi zero surging going rich and back firing
  66. Engine size, Proppeller, RPM
  67. After run/storage oil for YS engines
  68. P51-d / ys 115ws or ys 140fz
  69. So what happened to YS (Yamada Mfg)?
  70. ys 120 fz...what prop size to use???
  71. YS 120 F compression
  72. YS FZ 53/70/80 S engines listed at YS Japan
  73. Ys 60 with macs tuned pipe
  74. Y.s. Fz120
  75. YS-120FS Rich Idle
  76. YS 63 won't go above 8,000 rpm
  77. older but seems to be in great shape ys 1.20 sputtering
  78. Drilling piston for
  79. YS 140 quits
  80. ys .45 2cycle
  81. YS FZ110S rebuilt - question on regulator
  82. re-assemble YS110s crankshaft into casing
  83. FZ110S bearings spec
  84. YS 185 won't throttle up.
  85. YS 170 DZ will not idle down
  86. Stuck valves
  87. YS DZ70 fuel draw problems....
  88. YS 175 CDI Negative Push engine dies out
  89. YS DZ70 - Air Bubbles in Fuel Injector Line
  90. Cue The Sombre Music
  91. Synthetic after run oil safe on silicone?
  92. Rear Bearing debris - New Crankcase?
  93. YS set up to run in reverse rotation for twin
  94. YF 120FZ - Valve cover Pressurized?
  95. This section is just a mine of information, thanks to all contributors
  96. Ys dz
  97. YS 53 squeaking
  98. YS 53 repaired
  99. Aluminum beam mount for YS 115
  100. Timing YS-FZ-140
  101. YS CDI ver. 2 - Power Source Selection
  102. YS F-120 RPM recommendations
  103. YS CDI Ver. 2 - RPM Telemetry
  104. Ys fz 91
  105. Ys 115fz s
  106. YS 61-S o-ring needle valve idle adjust
  107. 175FZ fuel system question
  108. us engine repair
  109. ys engine repair
  110. YS F-120 help... parts missing!
  111. YS 45 spare parts frustration
  112. Ys fz 110 prop nut
  113. Ys 61-s
  114. Ys fz63. Won't idle w/o glow igniter
  115. Ys fz63 won't idle without glow igniter
  116. Fz 120
  117. Check valve
  118. ys 110 not Guard low idel
  119. YS110s no response to throttle.
  120. greg bischof
  121. What Head Is This?
  122. I have a question about the DZ185 cdi.
  123. DZ160 Power Comparison
  124. Pulse 60 Saito 100 need more
  125. break in ys dz 170 cdi
  126. YS FZ70S vs DZ70S Difference?
  127. IS YS FZ1.40 TO MUCH POWER FOR Top Flite P51d 60 size?
  128. YS120AC needle valve question
  129. YS FZ110-S Muffler Adapter
  130. YS FZ 140 S Piston Damage.
  131. YS Fz63 disc valve and cylinder head valve sealing info needed
  132. YS 120AC piston design/failure?
  133. ys 63 fuel line pressure
  134. ys63 fuel consumpsion
  135. fz 63s mounting
  136. ys fz3s throttle arm
  137. YS 110S regulator tear down
  138. fuel dripping from carb on 120fz
  139. YS 115 problems
  140. FZ70-S : rotating the regulator
  141. Mid range stumble and dies
  142. Best , no compromise YsFZ140 exhaust setup?
  143. ys 70 pipe
  144. change the prop from 17x12 to 18.1x10
  145. .91 AC Mixture Problems
  146. YS170 fuel tank clunk & break-in
  147. YS50ST Head gasket dramas. need help!
  148. Ys175 cdi
  149. YS FZ 140 Sport Throttle Barrel Seizing
  150. YS 140L surging
  151. 140L compression
  152. ys fz 63 break in
  153. ys 160dz Question ?
  154. New YS Engine "Coming Soon"
  155. ys 170dz cam follower
  156. muffler for YS45FR
  157. When to replace YS bearings
  158. BYRON 30% Heli Fuel?
  159. YS 170 DZ Needle valve and regulator / low speed setting
  160. YS 170 prop - 4 blade?
  161. how do you stop syphoning
  162. to vibrate or not to vibrate...
  163. YS DZ 70
  164. YS45 on Arrow 40
  165. Seating New Bearings in a YS 61-R
  166. YS45FR won't start
  167. YS F120 exhaust port
  168. How do I remove the head from a YS 140L engine
  169. Max rpm for ys 120f sc
  170. New YS70
  171. where do i get this exhaust?
  172. ys170dz Fuel tank
  173. help with idle problem on 91AC
  174. ys 1.20 se ?
  175. ys 120 fs or ac ?
  176. 115FZ Crank re assembly
  177. YS DZ140
  178. Piston / Sleeve Clearance
  179. F120
  180. used 91 ST heli engine wont run
  181. 115S fuel consumption
  182. dz 160 engine problem
  183. Pre-buy inspection of YS140L
  184. YS 61 Long stroke fuel consumption
  185. YS 115 Muffler Header
  186. YS61-S
  187. Parts for YS .61 long stroke (rear ex)
  188. YS-63 Drive hub
  189. YSDZ 160 cam bearing removal from crankcase
  190. YS 175 CDI Nose Ring
  191. YS 63 overly rich regulator
  192. 120 decreasing rpm
  193. Muffler keeps loosening up
  194. fuel leaking out carb? 120fs
  195. 110 FZ pushrod tubes
  196. YS 70FZ 16-6 Prop?
  197. YS CDI RF interference
  198. YS-115 Rough on Idle
  199. YS 91AC CDI - Lubrication
  200. YS120SF Needs Help
  201. YS-FZ110 dies on idle only in flight
  202. YS 91AC
  203. YS115 wont start
  204. ys 91 ac question
  205. YS 170 regulator
  206. YS 70 loading up
  207. ys fz110 (not the s version)
  208. New YS 115s runs then dies over and over.
  209. help with YS info
  210. Identification of YS 120
  211. Y 140 no compression
  212. YS 120SF crankshaft questions
  213. FZ70 Disassembly
  214. Proper Service After 5yr Storage
  215. Ys fz70
  216. YS 160/170 to gasser?
  217. Ys FZ 110S, just want to make sure.
  218. ys 170 - shutting down
  219. YS F120 Crankshaft Confusion...explain ? ?
  220. dz160 stop in Loud noise
  221. 91 ac idle problem
  222. Badly running YS 63S
  223. Where are the 91FZ's??
  224. YS-120SF VS YS-120NC
  225. YS 110s problems
  226. YS Super Mount 3
  227. Is this muffler ok?
  228. 3 or 4 blade prop for ys fz 91?
  229. YS 140 Sport Idle Problems
  230. YS 140 Sport
  231. YS 115s and fuel consuption
  232. Wanted: YS 45 Carb. body
  233. F1.20 head replacement
  234. Question re smoke trail YSFZ 1.10
  235. YS 110s problem
  236. ys 91 4 stroke
  237. YS 120 No Pressure from Pump.
  238. yamada email
  239. Striped out muffler caseing
  240. YS 160DZ Help
  241. 160 vs 170 cdi much difference?
  242. YS Repair Facility
  243. Troubled YS110S
  244. Old YS.60 2S-need directions
  245. YS 1.40L sensitive needle
  246. New FZ-110s fuel problems
  247. .91 AC
  248. YS FZ 70S a few questions
  249. YS 110FZ throttle barrel setting
  250. Ys fz 91