1971 Honda MiniTrail Z50 Questions?

Discussion in 'General' started by fbergski, Apr 4, 2021.

  1. fbergski

    fbergski New Member

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    Hello All,

    I'm finishing up a preservation of the above bike. It's all back together and I've started it for the first time. After starting riding it around my street I have a few questions for the experts.

    1. What is the stock front sprocket tooth size, I put a 12 on it and it seems a bit high?

    2. I replaced the clutch plates with NOS and cleaned clutch assembly, I did not completely disassemble but placed the half disassembled unit in my ultra sonic tank. After I soaked it oil to prevent flash rusting. It went back together fine since I took pictures. After starting the bike and putting in gear the clutch drags and slows the engine down from the original idle. Is this normal? I adjusted the clutch per the manual and it didn't seem to help. It shifts okay I guess, I didn't ride the bike before I started the project. Also what rpm should the clutch engage from idle? It seems to be too high for me but it may be normal.

    I reviewed some posts on here regarding the clutch assembly and noticed that one of the pictures showed a snap ring, my clutch had no snap ring. It' appears to be a different design.

    3. Should the spark arrestor have some packing in it? Bike seems loud but it may be normal.

    Here's short video of the bike.

    https://photos.app.goo.gl/SUVbSoMFDAZ2MwpGA

    Thanks

    Philip
     
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  3. cjpayne

    cjpayne Well-Known Member

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    The vid cuts off right before you start it up. Nice bike btw
     
  4. fbergski

    fbergski New Member

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    I know, my fault I realized I couldn't hold my phone and start it at the same time.
     
  5. Gary

    Gary Well-Known Member

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    No on the packing. Back in the day they did not seem loud maybe because some of our friends had Briggs & Stratton minis ? But now days yes they seem loud especially when compared to CT 70's
     
  6. kirrbby

    kirrbby Well-Known Member

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    12 tooth should be right, with a 35 tooth rear.
    Is your muffler a original Honda part??
    Try adjusting your clutch again. It may have loosened up or changed since your first adjustment.
    Then try moving the adjuster screw farther right...try it...see if it's any better or worse. Then try moving it farther left...try it...
    A by-the-book adjustment is a good start, and is sometimes just right. But other times you just need to play it by ear. Make it work to your liking. If you just can't seem to get it to good, you might need to go back inside for a look. Something could be off...missing, etc.

    There are a few different clutches for our bikes...one of the very first designs DID have a smaller snap ring on the back side. But I think they ALL use the big snap ring to hold the plates into the outer housing.
     
    #5 kirrbby, Apr 4, 2021
    Last edited: Apr 4, 2021
  7. kirrbby

    kirrbby Well-Known Member

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    Great lookin bike BTW. Nice work, and welcome to lilHonda.
     
  8. fbergski

    fbergski New Member

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    As far as I know it's the original muffler. This bike is my daughter's mother in-law's, she rode it around her small town as a young girl. Last year we were over at my daughters for a barbecue. Here husband took me over to there garage to show me a boat but the I saw the bike sitting in the corner. I'm a bike guy so I instantly wanted to know about the bike. Hadn't been ridden in at least twenty years and was pretty beat up. So I asked her to sell to me and she said no, I came up with a compromise, I'll restore it but she'll reimburse me for the parts. Her Dad bought it new in 1971.
     
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  9. fbergski

    fbergski New Member

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    Drove it around again today and it's starting to shift better. I'll keep putting around for few weeks before I give it back to her on Mother's day. Thanks for the sprocket info.
     
  10. cjpayne

    cjpayne Well-Known Member

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    Trust me, you'll have the BEST Mother's Day present this year.lol
     

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