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Kawasaki F7 175cc Thread

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

  1. the_doc

    the_doc Street Convert

    Joined:
    Jun 9, 2013
    Oddometer:
    339
    Location:
    Dexter Township, MI
    I picked up a pair of project bikes on Craigslist recently and I've begun the search for information on these Enduros. Looks like there have been a handful of threads in this section, but I thought it would be nice to have a general resource for anyone interested in, or working on their own project.

    So this might be considered the 'mega-thread' or 'threadfest' for anyone working on an F7.

    Obligatory picture of a Nice Looking Restored F7 (Not mine...)
    [​IMG]

    [​IMG]

    So anyone out there? Whatcha working on? Just want to brag and show us your immaculate garage queen, fully restored bike? Got a sweet parts lead?

    Here are the existing F7 threads in this forum:
    1974 Project Bike
    http://advrider.com/forums/showthread.php?t=958881

    1975 Project Bike

    http://advrider.com/forums/showthread.php?t=803683

    Leaking Oil

    http://advrider.com/forums/showthread.php?t=892459

    Carb Float Height

    http://advrider.com/forums/showthread.php?t=889060

    Bogging Down / Lacking Power Carb Issues

    http://advrider.com/forums/showthread.php?t=791673

    Missing Key Bypass

    http://advrider.com/forums/showthread.php?t=700524

    There is also pretty decent information hiding in a Yahoo user Group:
    https://groups.yahoo.com/neo/groups/vintagekawasakisingles/info

    Parts diagrams are available in a handful of places, but here is a quick link to one that seems to work fine:
    http://www.goekawasaki.com/OEMpartfinder.htm

    This guy seems to have a lot of relevant information to vintage rotorary Kawasaki's in general... Not necessary the 175 in particular:
    http://www.thejunkmanadv.com/

    :beer
    #1
  2. the_doc

    the_doc Street Convert

    Joined:
    Jun 9, 2013
    Oddometer:
    339
    Location:
    Dexter Township, MI
    As I mentioned I picked up a pair of these bikes to try to get in running order and looking presentable. We'll see how far I get, considering most of the important stuff came to me in boxes.

    Here they are coming out of the truck at the homestead
    [​IMG]

    Boxes and loose parts, Also go some parts in a 30 pack (beer) box - No beer included =[
    [​IMG]

    Took a couple minutes to collect all the loose parts into something a bit more suitable
    [​IMG]

    Holding area until I see what I'm working with engine-wise
    [​IMG]

    Ideally I'd like to move all the good parts I have over to the silver bike and keep it as original as possible. The red one has obviously seen some repainting and sticker-ing, even though it appears to be in a little better condition. The guy I bought them from said that he bought the pair as a project and actually had the red one running, but one for a few minutes before the piston broke and seized it up. So I started with 1 free engine and 1 stuck engine.

    I already tore the stuck one down, and pulled out the broken piston pieces - to and the jug looks fine still. Got quite a bit of cleaning to do as they are both caked in dirt. They guy did have the clymers manual with them, so I'm not toally in the dark. I also found a pdf of the Kawasaki manual thru MY 1973 on the web...
    #2
  3. andrewgore

    andrewgore Gôremā

    Joined:
    May 5, 2008
    Oddometer:
    6,548
    Location:
    brrrrrrlington
    My thread here: http://www.advrider.com/forums/showthread.php?t=757467

    Though as you know I've listed it locally. I blame my KTM :lol3

    I've got an old school Clymer manual at home for it as well. Kinda cool that they spec out how to hot rod the motor. They give you dimensions for the rotary valve and a few other trick things.

    Andrew
    #3
  4. the_doc

    the_doc Street Convert

    Joined:
    Jun 9, 2013
    Oddometer:
    339
    Location:
    Dexter Township, MI
    A little progress on one of the 2 engines. Had a few beers with a buddy and tore it down all the way. Since he wasn't heavily invested in the project the parts ended up all over the workbench - but I figure I have 2 manuals and an example engine to put it back together, so I'm not terribly worried.

    [​IMG]

    Trying to figure out the best way to clean these up. I thought about buying a parts washing station, but settled on a plastic tote with about 1/2 of degreaser in the bottom - and an array of wire / plastic / and tube brushes. took maybe an hour to get 1 side of the crankcase looking decent.

    [​IMG]

    You can see how dirty it was compared with the uncleaned side. But there is still a fair amount of dirt / grime stuck in the little corners and odd shaped parts of the transmission area... It will do for now, or until I figure a better way to get at the small spots. Slow going, but seems like a necessary step

    [​IMG]
    #4
  5. sjc56

    sjc56 Long timer

    Joined:
    Oct 26, 2006
    Oddometer:
    2,199
    Location:
    Broad Brook CT USA
    [​IMG]Here is my 72, needs new seals which I got to get to this spring.[​IMG]
    #5
  6. Rd650

    Rd650 Been here awhile

    Joined:
    Aug 11, 2009
    Oddometer:
    238
    Location:
    Clemson SC
    ^^^
    Good looking F7
    #6
  7. the_doc

    the_doc Street Convert

    Joined:
    Jun 9, 2013
    Oddometer:
    339
    Location:
    Dexter Township, MI
    Indeed a good looking '72

    Speaking of seals-

    Would it be a major mistake to not replace all the crank case seals while I'm this far into the engines? I was considering not since they 'look' okay, and I can't find a single place to buy all the required seals.
    #7
  8. the_doc

    the_doc Street Convert

    Joined:
    Jun 9, 2013
    Oddometer:
    339
    Location:
    Dexter Township, MI
    Tried to breakdown my 2nd (Donor) engine this past weekend.

    The flywheel would NOT come off the shaft. Not sure if I was doing something wrong, but the damn thing would not budge a bit. I ended up destroying my puller/bolts - the center pin yielded and bent off in the dimple in the end of the shaft. NO LUCK.

    This was my setup:
    [​IMG]

    I need to get to the transmission gears to replace 2 broken pieces in the other engine...
    #8
  9. andrewgore

    andrewgore Gôremā

    Joined:
    May 5, 2008
    Oddometer:
    6,548
    Location:
    brrrrrrlington
    Mine was the same situation. I think it's the 40 years of being in 1 location it's entire life. It doesn't want to move. I'm trying to remember, but I may have used a little heat or some other form of persuasion to get mine off. Maybe spray with some penetrating fluid?

    Just don't thread the bolts in too far & hit the stator. DAMHIK.

    Andrew
    #9
  10. pirate gonzo

    pirate gonzo Weirdo

    Joined:
    Jul 26, 2011
    Oddometer:
    279
    Location:
    West Bend WI
    Subscribing just because this was my first bike, mine was a 1972 yellowish color. I would love to get one again some day just for nostalgic purposes.
    #10
  11. the_doc

    the_doc Street Convert

    Joined:
    Jun 9, 2013
    Oddometer:
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    Location:
    Dexter Township, MI
    I tried the torch and a bit of strategic pounding and that didn't help either. I think you are right, after 40 years, its basically like 1 solid piece of steel.

    Thanks for tagging along. It'll be slow going, as its just a bit of a side project... but Hopefully I'll have a farm bomber on the other side.
    #11
  12. JMGreen

    JMGreen Adventurer

    Joined:
    Mar 29, 2014
    Oddometer:
    17
    Subscribing because I just bought one. Getting cylinder work done now and will hopefully have it running soon.


    Sent from my iPhone using Tapatalk
    #12
  13. Redclayrider

    Redclayrider Long time gone

    Joined:
    Oct 28, 2012
    Oddometer:
    3,120
    Location:
    Way down in the southern lands
    In.
    #13
  14. andrewgore

    andrewgore Gôremā

    Joined:
    May 5, 2008
    Oddometer:
    6,548
    Location:
    brrrrrrlington
    I decided to pull the motor out of my F7 last night. I figured if all else were in decent enough shape, I'd try to find a stator setup to mod in from another bike to get mine going.

    [​IMG]

    I figured why not pull the head.....
    [​IMG]

    Welp, there goes any plans to make this motor run again. :lol3

    Time to find an alternative route to take.

    Andrew

    ps - I need to put that motor in a plastic bag. My garage has a hint of 70's premix to it now. :lol3
    #14
  15. the_doc

    the_doc Street Convert

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    Hmmm... doesn't look good. I see your flywheel came off, doing better than I :thumb

    Do you still have the carb assembled? Do you happen to have a pic of that you could post up?
    #15
  16. andrewgore

    andrewgore Gôremā

    Joined:
    May 5, 2008
    Oddometer:
    6,548
    Location:
    brrrrrrlington
    I can get a pic of it, yah. I'll likely be unloading much of the original stuffs related to this motor.

    I'm still tempted by swapping in a 200cc 4T engine.

    Andrew
    #16
  17. gigger

    gigger n00b

    Joined:
    Apr 25, 2014
    Oddometer:
    2
    [​IMG]

    Here's my F7, not sure on the year as it's a bit of a mix. She needs some new seals and I've got the carb soaking. I also have a mostly complete parts bike with a seized motor to tear apart and see what's usable. I'm thinking of swapping a different motor in there if I can find one.
    #17
    ForeignDreamer86 likes this.
  18. JMGreen

    JMGreen Adventurer

    Joined:
    Mar 29, 2014
    Oddometer:
    17
    Ok gentlemen just got my cylinder back from the shop. It was bored to 63mm. This may sound like a dumb question but I am looking at wiseco kits on eBay. Will the 63mm piston fit? And what about clearance? Lastly break in procedure?


    Sent from my iPhone using Tapatalk
    #18
  19. JMGreen

    JMGreen Adventurer

    Joined:
    Mar 29, 2014
    Oddometer:
    17
    Got my F7 running but it runs almost full throttle. Any suggestions? I am going to plug the crank case drain tonight.


    Sent from my iPhone using Tapatalk
    #19
  20. the_doc

    the_doc Street Convert

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    Jun 9, 2013
    Oddometer:
    339
    Location:
    Dexter Township, MI
    Yes, from what I understand you have to be super careful about plugging all the places where air might be able to get in.

    The oil pump/drain thing is probably a good place to start, but probably not 100% of the issue.
    #20