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  1. .91 AC
  2. YS FZ 70S a few questions
  3. YS 110FZ throttle barrel setting
  4. Ys fz 91
  5. Dz 160 fuel pump prime
  6. YS .60/.61 two stroke parts source?
  7. 61 and 80 Heli engine Qs...
  8. 160 down on power
  9. PETEC - HELP with YS parts and service
  10. What fuel tank for FZ .91?
  11. YS Heli engines for Pattern?
  12. Aftermarket venturi for YS 170 ?
  13. YS 110S won't prime
  14. YS 170 CDI on low nitro
  15. 170 DZ
  16. 91AC fuel running out carb and exhaust
  17. Could not start NIB YS115S
  18. YS 115 Leaking airbox
  19. YSE0895 Exhaust Pipe Assembly for YS
  20. YS 110 Full throttle with carb closed
  21. To all YS CDI users
  22. YS 70 prop choice
  23. YS 170 CDI
  24. YX 140L sensitive needle
  25. Which ys 120 is this
  26. Canadian YS engines part retailer ??
  27. how hard I have to close the prop nut ,dz160
  28. Recalcitrant 160
  29. 140s problem
  30. YS170 Setting Up
  31. YS 120AC Dependability Maintenance and tweaks
  32. FZ115 fuel consumption
  33. YS 120 cams
  34. DZ170 Throttle Linkage
  35. YS 91 Pulsating Idle
  36. How to take out cylinder liner of DZ170 ?
  37. HS needle not change maximum rpm dz160
  38. prop apc 17x12w for dz 160
  39. fuel system problem with YS 140s
  40. Backplate HELP
  41. YS 115 strange idle
  42. Best Nitro/OIL/methanol combo for Fz 1.10
  43. YS 1.20 FZ HELP!!!!
  44. YS115
  45. Regulator direction
  46. YS Setup and Photos
  47. 120FZ and drop of fuel
  48. YS110 FZ prop
  49. YS 1.10 FZ trouble since repair
  50. YS63 tickover
  51. Changing ring in YS1.10
  52. how to fill
  53. YS 70 REAR BEARINGS
  54. Rules for Posting in the YS Forum (Please Read)
  55. YS 110fz lacks of power
  56. YS-175 CDI ?
  57. AFTERRUN OIL MISTAKE...
  58. Tips fpr YS90 and 110
  59. Inverted ys120
  60. Starting my YS 1.40L
  61. Something new in the works from YS
  62. YS Fuel
  63. ys 115
  64. When to replace the bearings
  65. ys63 slight problem
  66. 91AC vs 91FZ vs a 120 size 4 stroke
  67. Prop chunker
  68. Rapicon 30% 2C fuel for 160dz
  69. YS63FZ
  70. Oily mess
  71. Recommended tank size
  72. YS FZ110-S Problems
  73. YS 160 Re-assymbly Help
  74. Ys Super Mount 3
  75. Fuel tank pressure
  76. Cam timing on a YS 1.10
  77. YS FZ91 Throttle Arm Question
  78. 140 DZ wont run still
  79. YS140FZ has both valves stuck in open position
  80. where to send my ys 140 for service
  81. Loose Screws on a 140s valve cover
  82. New YS 140 Sport Leaking fuel out the carb
  83. YS 110FZ inverted dripps gas from carb can't tune
  84. How do you lap a YS valve
  85. YS F-120 Low Compression?
  86. YS 110 FZ
  87. YS63FZ will not go above idle
  88. YS91AC Slow to Pick Up Revs on Occasion
  89. YS-45 problem (pump?)
  90. Best Tuned pipe and Engine mount for YS long stroke 61
  91. Spares for YS61 FR
  92. Engine dies when reducuing power from 100%
  93. 91 AC Plunger woes
  94. YS FZ 110S Case Bronzing
  95. Fuel Dots?
  96. Fuel Dots?
  97. YS70
  98. YS 91 ST runing hot on the High end
  99. YS 91 AC -(H)heli parts differences?
  100. YS 110 Barrel seal
  101. YS110FZ compression problem
  102. Lost 91 AC muffler, any thread matches?
  103. Need Advice YS 140FZ
  104. YS 140FZ idle RPM changes
  105. YS170 Maintenance
  106. YS170cdi conrod again
  107. Hatori Flex header for YS engines
  108. YS 140DZ and 160DZ exhaust header interchangeability
  109. YS 120 manual
  110. YS 160/170 pump question
  111. ys 140 is a 140L or a 140 FZ
  112. Fuel Pump ... principle.
  113. Conrod reassembly YS 170 cdi
  114. Which electric starter for 160-170DZ??
  115. What version is this YS 140 L or FZ ?
  116. Need YS 120AC Manual
  117. YS110s Mid Range RICH
  118. Cam gear bearing change - Help!
  119. DZ 160 exhaust
  120. YS 70S
  121. OK to run CP 30% nitro 23% syn oil in YS 140L?
  122. FZ110 / Front and Rear Bearing Replacement
  123. YS DZ 175 CDI
  124. YS FZ110S - problem removing prop hub
  125. I need help tuning 91 fz
  126. YS70...In the air & Haul'in
  127. Where to Find manuals for YS engines online?
  128. YS 91 FZ fuel drip
  129. YS91AC - Trouble making revs
  130. starting problem with YS 140s
  131. YS 110 FZ idle issues
  132. YS FZ140 sport regulator screw direction
  133. YS Foam Clunk
  134. YS .91FZ original production needle valve question
  135. YS170 CDI difficult start
  136. After run oil
  137. YS 140DZ no fuel
  138. Trouble 63S
  139. shaft dia and thread count FZ 110
  140. ys 45 and ys 60 needle valve
  141. YS-FZ 70
  142. YS spare parts dealers in AUS
  143. YS FZ 110S Camgear timing adjustment
  144. YS 110FZ Problems... re-build?
  145. 3blade prop for fz-140
  146. YS 63 vibration
  147. 1.60DZ Sudden problem
  148. YS Parts and Service new website
  149. ys 140 fz s above idle problems
  150. YS .63 Straight pipe (Flexible)
  151. what fuel for ys 140 DZ
  152. F-120 Manual
  153. YS91AC vs YS120NC
  154. YS - 120 F set up & Operating Instructions
  155. YS 63 FZS airbleed
  156. New YS owner seeks info
  157. YS 110 FZ
  158. What starter and battery best for YS 1.10
  159. YS drip fuel
  160. YS 60FS Short Stroke Air vs. Heli
  161. Ys Super Mounts
  162. moving up from 20/20 to 30% and prop size
  163. FZ53 or FZ63 What's the difference?
  164. YS 1.40DZ failure
  165. stuck valve?
  166. YS 110 rebuild
  167. i
  168. YS 1.40 vs 1.10 for racing
  169. YS 1.10 - Mount Upside Down?
  170. the new y.s. motors
  171. Ys 110FZ crankcase and rod pitting
  172. 63S Regulator
  173. Muffler for YS170DZ -CDI
  174. YS-110 idle
  175. Ys 110's First start
  176. YS 1.10FZ fuel pump / pressure
  177. ys 45 fuel consumption
  178. ID this YS 140
  179. Neddle valve o-rings
  180. What is a good way to inject after run oil in a YS 140?
  181. YS Parts???
  182. 3mm left hand screw
  183. Where to get YS decals?
  184. FZ-110 won't start and I tried everything under the sun
  185. ys 1.20
  186. FZ110 VS FZ110S
  187. YS .91ST for speed prop plane
  188. YS170 CDI - INGINITON SWITCH
  189. 91AC drive washer
  190. 110 FZ runs perfect til it warms up.. then...
  191. ys 140 valve tappet clearance
  192. YS 91 AC and Muffler Piping options- Please help...
  193. idle issue
  194. YS 61 AR LONG STROKE DONT IDLE
  195. YS 120 Disassembly
  196. 120-FS rich low throttle
  197. YS F-120AC
  198. Looking fo a YS110
  199. YS and gas
  200. YS 70
  201. JBA 75 FS = YAMADA rebuild?
  202. ys 140 sport problem
  203. ys 140s will not start
  204. new ys 1.40 FZ
  205. YS 91 in T-Rex 700
  206. ys 140 sport
  207. ys newbie questions
  208. Fuel system in dz160
  209. 110 FZ squirting from carb
  210. YS110 idle variation
  211. YS110FZ-S won't quit
  212. Ys 53 problem
  213. Just a little info please
  214. 149 FZ drips from carb even after cleaning the regulator
  215. YS-91 AC
  216. YS FZ 110Detecting Air Leaks
  217. 140s midrange problem
  218. 140 FZ
  219. YS-110S dies at idle in flight, runs great on ground
  220. YS .91FZ frustrations....
  221. Ys 110FZ Low end too rich
  222. YS 91ST Bearing Replacement
  223. 110 FZ deadsticks and bad idle...
  224. FZ-110 idle inconsistancy
  225. YS-140 Limited
  226. Where to Buy?
  227. YS=63 FZ regulator orientation
  228. starter to dz160
  229. 63FZ trouble
  230. YS 170 fuel pump issue
  231. How do you remove the crankshaft to get the bearings out YS 110 FZ?
  232. YS 160 DZ CDI ?
  233. YS 110 keeps going dead stick
  234. YS 1.20AC Tuning Help Needed
  235. YS 140 Sport
  236. YS 91,no pressure in lines?
  237. dz 170 cdi
  238. Cleaning a dirty YS
  239. tunning video
  240. Sport or DZ?
  241. 110s Top End issues
  242. YS115FZ-S when/where available??
  243. YS 110 - lots of fuel leakage: just part of it?
  244. YS FZ 110 S Three Blade Prop
  245. YS-53 throws Prop / Detonation
  246. Moving throttle arm to the other side
  247. YS FZ110 Problem
  248. 91FZ not running
  249. Gaskets
  250. YS 140 Limited Edition