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    • Bryan Bosch

      JUST IN!   04/24/2018

      HOW TO: 4-STROKE PISTON REPLACEMENT DONE RIGHT!

RPMR6

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About RPMR6

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    Wisconsin
  1. I ended up doing just that after i clean some oil out of my twin air filter (noob had it too oiled) and dropped the needle one clip it got better with just a stutter up the wfo. that made me think rich so i swapped to the 165 main and it pulls like a freight train now Thanks for the help R
  2. Got rid of most of my mid range stumble but still have a high speed skip i turned fuel screw to 2.5 to help decel popping and droped the red needle to the 4th clip as well as rermoved to much oil from my twin air filter my question is it lean just on top now and would the blue needle help or the 170 main ? thanks
  3. Just rejetted a stock 05 yfz450 atv with no lid and a twinair filter no spark arrestor in the pipe and the carb spring mod (moved coil attachment point) done nothing else. used JDJETTING KIT Red needle 168 main and a 45 pilot with 2 turns out on the fuel screw Now i have a mid to high speed miss in second and up near the top of the power thought it was the throttle cable being to tight and the TORs kicking in but adjusting that didnt help much at all I ride at about 1200 feet and 65-90 deg temps Anythoughts on what the cause might be ? the bike ran great before i started am i rich or lean or what ? thanks R