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  1. tek9tim

    Chain loosened on Mac 110 each use

    I’ll go out on a limb and guarantee that you aren’t lifting the tip of the bar while you’re tensioning the chain and tightening the bar nut. Every saw manual out there specifies to do it that way. Do an experiment: tension the chain with the bar just hanging in the air, leave the bar nut loose...
  2. tek9tim

    What makita saws were good and why

    I have a Makita 6400 that I bought new back in ‘08. Never started it up as a 64cc saw, threw the OEM 79cc top end on, bought the full wrap bar as soon as it was available in the US, put the HD air filter on it as soon as that was available in the US, and finally put the western dogs on it last...
  3. tek9tim

    Top Handle Recommendation?

    I've done a lot of falling for a lot of years, and run ported saws, primarily Stihls. I started getting into climbing in the last year and needed a top handle. Looked around, and decided that the price tag of the 355T combined with hands-on experience of folks I trust made it a good choice. No...
  4. tek9tim

    Want to Buy Jonsered 670 Top Cover

    Pretty sure I have one. I'd give you the rest of the saw with it, as long as you covered shipping.
  5. tek9tim

    Stihl 044 10 or 12mm

    I know this is a little old, and it's in the wrong area, but yeah. I'll affirm that's a 12mm. Changeover was in the 129 serial number range. Definitely figure out what caused it. Of course there's the straight gas possibility, or operator error in trying to shake out the last few drops of fuel...
  6. tek9tim

    School me on the 064 starter

    Alright, so I found a blind spot in my knowledge of Stihls. Haven't had to wrench on many 064s in my time. I've got one that's missing a starter, and I'm looking for options to remedy that. Obviously a original 064 starter is the easiest plan. But failing that, could I throw an 066 flywheel...
  7. tek9tim

    Stihl 391 top end rebuild issues

    Well, turns out that it wasn't entirely my ineptitude with a different saw than I was used to. Stihl changed the cylinder and intake from the early design. Here I thought that somehow the cylinder wasn't seating (you can't see the base of it to tell) and not allowing enough room to get the...
  8. tek9tim

    Stihl 391 top end rebuild issues

    First, a little background; I've been rebuilding Stihls for about 15 years. Can do a top end swap on a pro saw in less than 30 minutes. (using a drill with a t27 bit) I seriously have no idea how many saws I've done top ends on. I do my own port work. But, I have never touched one of the god...
  9. tek9tim

    ms440 with a 8 pin and a 25 inch bar

    Yeah, but that's a 441, never run one that felt as strong as a 44. I've run 8 tooth sprockets on 044/440s with 28" bars a lot. Have to keep your square ground chain sharp, can't run your rakers lower than .025. On the upside, you can just let the saw eat through the wood with very little...
  10. tek9tim

    Jonsered 670 questions

    Hate to say it, because I absolutely love Stihls, but at home I run my 7900 more than my Stihls. Most of that has been because I have cut smaller diameter firewood this summer, and I have a 20" bar for the 7900, and nothing shorter than 28" for the Stihls. (At work I have no choice, but I...
  11. tek9tim

    Jonsered 670 questions

    Haha... I didn't "do" anything to get these, a guy I work with put them in my truck beyond my choice. Triple basket case, but at least none of them had top ends pulled off. Also, had a guy from Battleground about a decade ago try to tell me his stock ~50cc Jonsered would smoke my Stihl 460...
  12. tek9tim

    The "Not So Pro" discussion thread...of course Pros are welcome!

    Haha... gotta do something late season to keep the crew morale up! That pic was actually taken just barely up Tiny Canyon off of Crum. I like that whole area a lot.
  13. tek9tim

    Jonsered 670 questions

    Thanks SawTroll... AS isn't letting me download that service bulletin. I'll try later. Anybody have any more info about parts crossover?
  14. tek9tim

    Advancing the Timing

    The key only helps with assembly. The taper of the crank and flywheel keep the flywheel mated once the nut is tightened. Many, myself included, run saws without keys. Takes some care in assembly, but I have many saws out there I've done work on that have run for close to a decade without a key...
  15. tek9tim

    The "Not So Pro" discussion thread...of course Pros are welcome!

    I went cutting with slowp the other day, not so impressed with the shirt she made me wear...
  16. tek9tim

    Jonsered 670 questions

    So a buddy of mine gave me 3 670s the other day, 1 champ and 2 super IIs. One of the supers looks to have been slightly smashed, with damage to the cylinder fins and flywheel. The other super had a stuck ring, and they all have bad clutches, with that being the only problem with the champ...
  17. tek9tim

    Wildland Firefighter Applying for Tree Climber Position- SOS!

    Son, you're giving us agency cutters a bad name. I'm a western C-faller for goin' on 8 years, been rock climbing for 13 years, own spurs and a belt, have actually climbed a few trees, and know enough to know I shouldn't go certify next week to be a climber. Yes, I have friends that used to...
  18. tek9tim

    Another Ethanol thread - Washington State

    I've never lived anywhere that does emission checks, so I don't know what that's all about. BUT, Oxides of Nitrogen (in that order) are why all cars have come with catalytic converters since the 80's, and why diesels now run urea. Not exactly a new emission concern. They (NO and NO2) are the...
  19. tek9tim

    Manual oilers Vs Automatics

    And if you have to make your living with either one, I feel sorry for you. I could not imagine cutting fireline for 14 hours straight with a manual oiler only. I do like having both on my 840, but for a saw I actually had to work with... nah.
  20. tek9tim

    Ms460 muffler mod... Complete!

    Yeah, February is a lot different than August. I've lit logs up with the OEM dual port setup several times, as well as stock side exits and added on off side exits. None of these are a straight path out of the muffler. I'm not making this up to scare you. I am sharing my thorough experience...
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