Kawasaki F7 175cc Thread

Discussion in '2 smokers' started by the_doc, Mar 4, 2014.

  1. sjc56

    sjc56 Long timer

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    if they have never been done the old leaky crank seals will suck the oil out of the gear box and you will smoke heavily. I trashed a transmission this way. Luckily I had a spare motor. They are cheap and fairly easy to replace.
    Westcoasthumpin likes this.
  2. Mhacks

    Mhacks n00b

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    I'm having trouble with the contact points in my bike. I have a 1971 f7 that I bought off someone that came with a bunch of parts including new contact point breaker and a condenser. I don't know where it goes. Everything I've found points to inside the flywheel but I cannot for the life of me get the thing off. I ended up beinding the bolt that comes out of the flywheel in the process of getting this damn thing off. I'm getting really frustrated here I would appreciate any help

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  3. RockyRue

    RockyRue Long timer

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    There are no points in the flywheel, that is your stator I think
    and you have really mangled that which is the end of the crank
    I think it has a CDI ignition
  4. Mhacks

    Mhacks n00b

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    You think I can just leave it since that flywheel ain't going nowhere?
  5. RockyRue

    RockyRue Long timer

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    Now you have a problem, you need to get the nut back on...
    And you have pretty well bent the threads.
    You need a "split die"
    Put it on behind the bent part, add some cutting fluid and work it off.
  6. RockyRue

    RockyRue Long timer

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    You probably want to continue and get the flywheel off and replace that crank seal.
    Lesson Time
    It looks like you used a puller with a wide pointed pin
    You need a specific puller with a flat face and a small pin to keep it centered
    And then you want a harmonic balance type that has the bolts to thread into the flywheel
    I did something similar to mine, and used a split die to fix it.
  7. RockyRue

    RockyRue Long timer

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    Another idea to help a bit.
    Get the split die
    Fix the threads
    Get 2 or 3 nuts on the threads to "protect them"
    maybe even put a smaller nut inside the outer nut to protect the end of the crank
    And try again
    Leave just enough space between the flywheel and the closest nut for the fly wheel to "PoP" off
  8. Mhacks

    Mhacks n00b

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    I was able to get the nut back on with your advice, very helpful btw thank you, and tried to pop off the flywheel but the thing didnt want to come off and I didnt want to superman anymore metal. I thought I had no reason to get into the flywheel anymore that was until I noticed I messed up the coils a bit from threading the bolts of the harmonic balancer a little too deep and turning the flywheel. Now the Coils look like this and I am not getting any spark. Pretty sure I need new coils. What do you think? I looked up the price of the two coils (primary coil and pulser coil) and i would have to pay about $230 total. Does anyone know any cheaper or alternative solutions?

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  9. RockyRue

    RockyRue Long timer

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  10. Mhacks

    Mhacks n00b

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    We both put ourselves in a very similar situation lol. Except now the washer is stuck. At this point I am literally having dreams about getting this thing off. I've applied a LOT of torque, heat, hammer taps and still nothing. Not even budging, used marker to see if it moved at all and there has been no difference. What am I supposed to do?

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  11. Mhacks

    Mhacks n00b

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    Update on flywheel: I have no idea how im going to get this magneto off but I'm determined to get this bike running eventually. If anyone's got any ideas or knows where I can get a functioning 1971 f7 175cc motor please let me know. Thank you
  12. ChopperCharles

    ChopperCharles Long timer

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    You won't find a functional motor, every one of them will need crank seals. Plus, it's a relatively rare bike.

    Charles.
  13. RockyRue

    RockyRue Long timer

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    There are craigslist.org search engines or you can do something like this on Google:
    kawasaki f7 site:craigslist.org

    This is exactly what I paid for my turn key running F7 a few years ago.
    72' Kawasaki f7- parts/project - $1,450
  14. 380Viking

    380Viking Adventurer

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    Get a scrap of 1/4 or thicker steel plate about 3x3 or bigger, drill three 1/4inch holes that match the layout of the 6mm threaded holes in the hub, get 3 high quality 6mm metric bolts about 30mm long, back the flywheel nut off so the end of the crank is just below flush to the nut surface, grease the 6mm bolts and bolt the plate down over the flywheel nut using care to keep it flat to the nut surface as it comes tight, tighten it evenly a little more, whack the plate between the bolts with a ball peen hammer, tighten the bolts a little more then hit it again a little harder, repeat until it pops loose
  15. Coldsmoke

    Coldsmoke n00b

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    So, I have a f7 175 that I am working on and I'm trying to locate a carb. Anyone out there have any leads? Thanks in advance!
  16. ChopperCharles

    ChopperCharles Long timer

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  17. Dirt2007

    Dirt2007 Long timer Supporter

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    What year? I've been looking for a rebuild kit for my 73.
  18. Coldsmoke

    Coldsmoke n00b

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  19. sjc56

    sjc56 Long timer

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    I have had this bike for years now but one issue keeps cropping up is gas accumulating where the Carb lives. The motor will start bogging down because it is sucking in raw gas that is coming from somewhere. I clean the carb many many times, rebuilt it, I turn on the gas, I take off the cover and sit there watching for gas and nothing, seems to happen when running, it does spit gas out the intake when running, but I have read that is normal any ideas.
  20. ChopperCharles

    ChopperCharles Long timer

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    Crank seals most likely.

    Charles.