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      JUST IN!   04/24/2018

      HOW TO: 4-STROKE PISTON REPLACEMENT DONE RIGHT!

klowens1

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About klowens1

  • Rank
    TT Newbie

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  • Location
    Arkansas
  1. everything is stock on the heads. the seals and guides look good and everything feels and works perfect when i reassemble with new valves. I thought it might be a oiling problem
  2. yes... the wedge type keepers
  3. i also considered the bigger bars for mine...the clamp is only 1/4" or so higher than stock. but the place where bars normally bend is at the bottom bend. the oversize bars are still 7/8 in that spot. but i do reccomend staying with the pro taper bars
  4. I have a 98 yz400. The left side intake valve has stripped the cotters on multiple occasions. I can't be sure if the valve is sticking and causing this or if the valve just becomes stuck as a result of being struck by the piston. each time this happens I replace the valve and inspect the cylinder head but can't find any visible defects. Bottom line......stripped cotters, stuck valve, valve bent from piston. Not sure in what order. Please help, this is driving me crazy.
  5. I have a 98 yz400. The left side intake valve has stripped the cotters on multiple occasions. I can't be sure if the valve is sticking and causing this or if the valve just becomes stuck as a result of being struck by the piston. each time this happens I replace the valve and inspect the cylinder head but can't find any visible defects. Bottom line......stripped cotters, stuck valve, valve bent from piston. Not sure in what order. Please help, this is driving me crazy.
  6. I live about 3 miles from there but i was looking for long trails...maybe some all-day riding
  7. I've lived in the dfw area for a while and i know where all the tracks are but i was looking to do some trail riding. i was wondering if anybody knew where some good trail riding is in the area.
  8. I found when teaching my kids that it's extremely difficult to learn the clutch and shifting at the same time. I reccomend an automatic clutch until she grasps throttle feathering and shifting. My girl ran over or into everything in front of her even with the automatic clutch, so riding gear is probably a good idea.
  9. i don't have my owners manual but mine weighs in at 238 with oil and coolant (no gas)
  10. I have a yz400 and i've found that i consume about the same amount of fuel just putting around or riding hard. the difference is minute if any at all.