Looking for Insights on 1978 Yamaha DT 175

Motorcycles
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Introduction

I’ve recently stumbled upon a 1978 Yamaha DT 175 and I’m seriously considering adding it to my collection of vintage bikes. I’m reaching out to the community for insights and advice about this specific model.

Specifications

From what I’ve gathered, the Yamaha DT 175 is a two-stroke enduro bike that was quite popular in its time. Here are some of the specs I found:

  • Engine: 175cc, air-cooled, single-cylinder
  • Power Output: Approximately 15 horsepower
  • Transmission: 5-speed manual

Does anyone have more detailed specifications or any hidden features that I should be aware of?

Maintenance Concerns

I’ve heard that certain maintenance issues might be common with the DT 175. In particular, I’m curious about:

  • Oil Injection System: I understand that the oil injection system can sometimes malfunction. Are there recommended practices to keep it running smoothly?
  • Electrical Issues: Are there any specific wiring problems that frequently occur with this model?

Buying Tips

For those who have owned one, what should I be cautious about when purchasing? Are there red flags to look out for? And what’s a fair price range for a bike in good condition?

Parts and Resources

Lastly, where can I find parts for restoration? Any recommended suppliers or forums specifically for parts sourcing?

Conclusion

I’d love to hear your experiences and any tips you might have about the Yamaha DT 175. Any help would be greatly appreciated as I venture into potentially restoring this classic bike!

8 Likes
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I’m excited to see someone restoring a 1978 Yamaha DT 175! First, make sure you have a good service manual. It’ll guide you through the process. Have you started sourcing parts?

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Absolutely! I found one on eBay for about $20. It’s invaluable for tricky parts and specifications.

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For sourcing parts, check out online communities and websites dedicated to vintage motorcycles. They can have hard-to-find items!

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If you’re handy, look into local motorcycle salvage yards. You can often find great parts there at a fraction of the price. Plus, it’s like a treasure hunt!

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Good point! I also recommend joining Facebook groups focused on vintage bikes; they can be super helpful.

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Don’t forget about tools! A good socket set and a torque wrench are essential for any restoration. Anything else you’d suggest?

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I’d also add a carburetor cleaner and a compression tester. Makes tuning so much easier!

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Has anyone come across a detailed step-by-step guide for the DT 175? I could use something straightforward for my restoration!

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I created a YouTube series recently that showcases my step-by-step process! It covers restoration of the DT 175. Check it out if you’d like!

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That sounds awesome! Can you share the link? I’d love to watch and learn from your journey!

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I’ve heard restoring old bikes can be a pain! But once you get it running, there’s no greater joy. Anyone else find it challenging to source parts without breaking the bank?

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I used to own a 1978 Yamaha DT 175! One common issue I faced was electrical problems, especially with the lighting system. Make sure to check the connections and replace any frayed wires.

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That sounds familiar! I had trouble with the starter too. Have you checked the battery voltage? It’s usually a simple fix.

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In addition to electrical issues, the carburetor tends to get gunky over time. Clean it regularly to avoid stalling. The DT 175 is a great bike, but requires some TLC!

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Totally agree! I learned to take it apart and clean it every season. It saved me a lot of headaches on the road!

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I’ve noticed that a lot of DT 175s exhibit clutch slippage issues. It’s often due to improperly adjusted cables. Have you checked if yours needs a tweak?

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Haha, sounds like a ritual! How about ignition coils? I had a frustrating time with mine failing unexpectedly. Any tips?

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Ignition problems can be a nightmare! Check the coil connections and if possible, replace old spark plugs. It might just save you from some roadside trouble!

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I find it amusing how spark plugs are often overlooked! Seriously, though – I’ve seen folks come back to life just by replacing those.

2 Likes