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  1. After run/storage oil for YS engines
  2. P51-d / ys 115ws or ys 140fz
  3. So what happened to YS (Yamada Mfg)?
  4. ys 120 fz...what prop size to use???
  5. YS 120 F compression
  6. YS FZ 53/70/80 S engines listed at YS Japan
  7. Ys 60 with macs tuned pipe
  8. Y.s. Fz120
  9. YS-120FS Rich Idle
  10. YS 63 won't go above 8,000 rpm
  11. older but seems to be in great shape ys 1.20 sputtering
  12. Drilling piston for
  13. YS 140 quits
  14. ys .45 2cycle
  15. YS FZ110S rebuilt - question on regulator
  16. re-assemble YS110s crankshaft into casing
  17. FZ110S bearings spec
  18. YS 185 won't throttle up.
  19. YS 170 DZ will not idle down
  20. Stuck valves
  21. YS DZ70 fuel draw problems....
  22. YS 175 CDI Negative Push engine dies out
  23. YS DZ70 - Air Bubbles in Fuel Injector Line
  24. Cue The Sombre Music
  25. Synthetic after run oil safe on silicone?
  26. Rear Bearing debris - New Crankcase?
  27. YS set up to run in reverse rotation for twin
  28. YF 120FZ - Valve cover Pressurized?
  29. This section is just a mine of information, thanks to all contributors
  30. Ys dz
  31. YS 53 squeaking
  32. YS 53 repaired
  33. Aluminum beam mount for YS 115
  34. Timing YS-FZ-140
  35. YS CDI ver. 2 - Power Source Selection
  36. YS F-120 RPM recommendations
  37. YS CDI Ver. 2 - RPM Telemetry
  38. Ys fz 91
  39. Ys 115fz s
  40. YS 61-S o-ring needle valve idle adjust
  41. 175FZ fuel system question
  42. us engine repair
  43. ys engine repair
  44. YS F-120 help... parts missing!
  45. YS 45 spare parts frustration
  46. Ys fz 110 prop nut
  47. Ys 61-s
  48. Ys fz63. Won't idle w/o glow igniter
  49. Ys fz63 won't idle without glow igniter
  50. Fz 120
  51. Check valve
  52. ys 110 not Guard low idel
  53. YS110s no response to throttle.
  54. greg bischof
  55. What Head Is This?
  56. I have a question about the DZ185 cdi.
  57. DZ160 Power Comparison
  58. Pulse 60 Saito 100 need more
  59. break in ys dz 170 cdi
  60. YS FZ70S vs DZ70S Difference?
  61. IS YS FZ1.40 TO MUCH POWER FOR Top Flite P51d 60 size?
  62. YS120AC needle valve question
  63. YS FZ110-S Muffler Adapter
  64. YS FZ 140 S Piston Damage.
  65. YS Fz63 disc valve and cylinder head valve sealing info needed
  66. YS 120AC piston design/failure?
  67. ys 63 fuel line pressure
  68. ys63 fuel consumpsion
  69. fz 63s mounting
  70. ys fz3s throttle arm
  71. YS 110S regulator tear down
  72. fuel dripping from carb on 120fz
  73. YS 115 problems
  74. FZ70-S : rotating the regulator
  75. Mid range stumble and dies
  76. Best , no compromise YsFZ140 exhaust setup?
  77. ys 70 pipe
  78. change the prop from 17x12 to 18.1x10
  79. .91 AC Mixture Problems
  80. YS170 fuel tank clunk & break-in
  81. YS50ST Head gasket dramas. need help!
  82. Ys175 cdi
  83. YS FZ 140 Sport Throttle Barrel Seizing
  84. YS 140L surging
  85. 140L compression
  86. ys fz 63 break in
  87. ys 160dz Question ?
  88. New YS Engine "Coming Soon"
  89. ys 170dz cam follower
  90. muffler for YS45FR
  91. When to replace YS bearings
  92. BYRON 30% Heli Fuel?
  93. YS 170 DZ Needle valve and regulator / low speed setting
  94. YS 170 prop - 4 blade?
  95. how do you stop syphoning
  96. to vibrate or not to vibrate...
  97. YS DZ 70
  98. YS45 on Arrow 40
  99. Seating New Bearings in a YS 61-R
  100. YS45FR won't start
  101. YS F120 exhaust port
  102. How do I remove the head from a YS 140L engine
  103. Max rpm for ys 120f sc
  104. New YS70
  105. where do i get this exhaust?
  106. ys170dz Fuel tank
  107. help with idle problem on 91AC
  108. ys 1.20 se ?
  109. ys 120 fs or ac ?
  110. 115FZ Crank re assembly
  111. YS DZ140
  112. Piston / Sleeve Clearance
  113. F120
  114. used 91 ST heli engine wont run
  115. 115S fuel consumption
  116. dz 160 engine problem
  117. Pre-buy inspection of YS140L
  118. YS 61 Long stroke fuel consumption
  119. YS 115 Muffler Header
  120. YS61-S
  121. Parts for YS .61 long stroke (rear ex)
  122. YS-63 Drive hub
  123. YSDZ 160 cam bearing removal from crankcase
  124. YS 175 CDI Nose Ring
  125. YS 63 overly rich regulator
  126. 120 decreasing rpm
  127. Muffler keeps loosening up
  128. fuel leaking out carb? 120fs
  129. 110 FZ pushrod tubes
  130. YS 70FZ 16-6 Prop?
  131. YS CDI RF interference
  132. YS-115 Rough on Idle
  133. YS 91AC CDI - Lubrication
  134. YS120SF Needs Help
  135. YS-FZ110 dies on idle only in flight
  136. YS 91AC
  137. YS115 wont start
  138. ys 91 ac question
  139. YS 170 regulator
  140. YS 70 loading up
  141. ys fz110 (not the s version)
  142. New YS 115s runs then dies over and over.
  143. help with YS info
  144. Identification of YS 120
  145. Y 140 no compression
  146. YS 120SF crankshaft questions
  147. FZ70 Disassembly
  148. Proper Service After 5yr Storage
  149. Ys fz70
  150. YS 160/170 to gasser?
  151. Ys FZ 110S, just want to make sure.
  152. ys 170 - shutting down
  153. YS F120 Crankshaft Confusion...explain ? ?
  154. dz160 stop in Loud noise
  155. 91 ac idle problem
  156. Badly running YS 63S
  157. Where are the 91FZ's??
  158. YS-120SF VS YS-120NC
  159. YS 110s problems
  160. YS Super Mount 3
  161. Is this muffler ok?
  162. 3 or 4 blade prop for ys fz 91?
  163. YS 140 Sport Idle Problems
  164. YS 140 Sport
  165. YS 115s and fuel consuption
  166. Wanted: YS 45 Carb. body
  167. F1.20 head replacement
  168. Question re smoke trail YSFZ 1.10
  169. YS 110s problem
  170. ys 91 4 stroke
  171. YS 120 No Pressure from Pump.
  172. yamada email
  173. Striped out muffler caseing
  174. YS 160DZ Help
  175. 160 vs 170 cdi much difference?
  176. YS Repair Facility
  177. Troubled YS110S
  178. Old YS.60 2S-need directions
  179. YS 1.40L sensitive needle
  180. New FZ-110s fuel problems
  181. .91 AC
  182. YS FZ 70S a few questions
  183. YS 110FZ throttle barrel setting
  184. Ys fz 91
  185. Dz 160 fuel pump prime
  186. YS .60/.61 two stroke parts source?
  187. 61 and 80 Heli engine Qs...
  188. 160 down on power
  189. PETEC - HELP with YS parts and service
  190. What fuel tank for FZ .91?
  191. YS Heli engines for Pattern?
  192. Aftermarket venturi for YS 170 ?
  193. YS 110S won't prime
  194. YS 170 CDI on low nitro
  195. 170 DZ
  196. 91AC fuel running out carb and exhaust
  197. Could not start NIB YS115S
  198. YS 115 Leaking airbox
  199. YSE0895 Exhaust Pipe Assembly for YS
  200. YS 110 Full throttle with carb closed
  201. To all YS CDI users
  202. YS 70 prop choice
  203. YS 170 CDI
  204. YX 140L sensitive needle
  205. Which ys 120 is this
  206. Canadian YS engines part retailer ??
  207. how hard I have to close the prop nut ,dz160
  208. Recalcitrant 160
  209. 140s problem
  210. YS170 Setting Up
  211. YS 120AC Dependability Maintenance and tweaks
  212. FZ115 fuel consumption
  213. YS 120 cams
  214. DZ170 Throttle Linkage
  215. YS 91 Pulsating Idle
  216. How to take out cylinder liner of DZ170 ?
  217. HS needle not change maximum rpm dz160
  218. prop apc 17x12w for dz 160
  219. fuel system problem with YS 140s
  220. Backplate HELP
  221. YS 115 strange idle
  222. Best Nitro/OIL/methanol combo for Fz 1.10
  223. YS 1.20 FZ HELP!!!!
  224. YS115
  225. Regulator direction
  226. YS Setup and Photos
  227. 120FZ and drop of fuel
  228. YS110 FZ prop
  229. YS 1.10 FZ trouble since repair
  230. YS63 tickover
  231. Changing ring in YS1.10
  232. how to fill
  233. YS 70 REAR BEARINGS
  234. Rules for Posting in the YS Forum (Please Read)
  235. YS 110fz lacks of power
  236. YS-175 CDI ?
  237. AFTERRUN OIL MISTAKE...
  238. Tips fpr YS90 and 110
  239. Inverted ys120
  240. Starting my YS 1.40L
  241. Something new in the works from YS
  242. YS Fuel
  243. ys 115
  244. When to replace the bearings
  245. ys63 slight problem
  246. 91AC vs 91FZ vs a 120 size 4 stroke
  247. Prop chunker
  248. Rapicon 30% 2C fuel for 160dz
  249. YS63FZ
  250. Oily mess

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