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Hi buddy.ive got a 75 400.4.and your vids helped me so much.more so doing the carb rebuild.keep up the good work.😊.

Nooooooooo dont do this to that beutiful bike..... 😢

Mate, can you help me with the ignition Gap, is it 3mm-4mm?, you show the manual and i couldnt read that, because you was with the valvules regulation

Had a bike similar to that . Mine was a ‘66 YG1K. Didn’t have the fairing and I replaced the full chain guard with the slimmer, more sporty type which only covered the top of the chain. Was a great little bike . Top speed of about 50 mph. Paid $425 CAD . Would have liked a Honda S90 or Yamaha twin 100 but they were around $500.

Dowty Seal. So called because they were invented by the Dowty company of Cheltenham in 1945, manufacturer of aircraft components. The generic name is 'bonded seal' - a seal bonded to a washer.

Is there going to be a part 9? #hopefulface

nice video,i know that you are doing just right but im just not smart enough to understand id.can you please explain how to adjust the air and fuel screw outside without disconnecting all carbs parts,i just cant find it lol"thank you.......

Have you had good luck with the Wassel carburetors? I just picked up a set and they were cheaper than the Amals. I just haven’t tried them yet.

Hi hope you can help, can you please let me know the engineering firm that measured your crankcase bearings thanks from John 😊

Original Spitfires had Amal GP carbs with a central float chamber.

I cant get episodes 1 and 2

I have an rd200a last on the road in 1979 and is from North Carolina with only 6850 miles or 10758 km. The pistons were already .25 over so I have to get .50 mm over. Bike was free but machine work was 280$$ Canadian plus IMD pistons/rings from UK. Carbs are junk.

Good series - thanks for making it. I would very much have liked to have seen what you did on the frame, particularly what type of paint and its application method following blasting.

Fumbling about? I'm a consumate professional 😂😂. I only speak to camera for about 3 seconds. .

I've had my cuurent Triumph Thruxton R, for 6 years now, 40k miles, love it. I don't normally watch videos that start with people talking to the camera, as it drives me mad, everyone wants to be on TV. But I stuck with your video and glad I did as it was nice to see you fumbling like I would around maintenance, good video, ta. Paul UK

Very good video, but I could hardly hear it!

You will need to remove the choke gizzmo's! The Mk1 concentrics are diabolical things. their pilot jets are bushing fitted in the pilot passageways. Bloody difficult to remove any blockages. One sure method is to drill out the blanking plug opposite the pilot mixture screw then, clear the blockage & use some epoxy to seal the drilled hole. Mk1.5 units already have a removable screw for just such purposes; what does that tell you?. but, over time, the carby bodies will warp causing further issues. I would not have them even as a gift! MK 2 Amals or Mikuni's are the way to go, at least in my opinion. glad it started well for you.

This series in general helped me A LOT, great videos

Im currently stripping my engine down. How did you secure the primary shaft in place to undo the nut?

This is a highly valuable step-by-step explanation of one of the most difficult elements of removing the engine-the combination of airbox and carburetor removal...I particularly appreciate how much trouble the presenter goes to get great camera angles so that you can see exactly what he's working on and follow along. A great deal of technique is required. Having just completed the process on my own 400f some ideas for your consideration that helped me remove/re-install the carburetor was to use a ratchet strap wrapped around the front of the plastic airbox plenum to pull the airbox towards the rear of the bike and gain a few precious centimeters...Be sure to remove the metal sleeve that runs into the filter box forward into the plastic airbox before attempting to remove the carbs. Whether removing the carbs or re-installing once the carbs are back in line between the manifold and the airbox plenum, get on top of the bike and straddling it reach down (wear gloves) and wiggle the carbs up and down and forward and aft to either break them loose from the front and rear boots (or when re-installing) to get the carb intakes and exhausts back into the front and rear boots. Be sure to put some lubricant on the insides of the boots. I also found using a heat gun to warm up the boots helped soften them. I also recommend placing the metal tighteners around the boots very loosely before inserting the carbs in between the airbox/engine manifold space. Leave the airbox metal sleeve out while re-inserting the carbs as you'll want to pin the airbox back with the ratchet straps while you insert, then remove the straps and (straddling the bike from above) wiggle the carbs up and down and front and back to insert the boots. Finally, a trick that I used once I got the out two outer airbox rubber boots on the intake of the carbs and needed to get the internal two airbox rubbers to go on the carb was to (1) clamp the outer two airbox rubbers onto the carbs and then get a 1" X 1" X 5: piece of wood inserted horizontally into the plastic airbox from the air filter box and then use a longer vertical piece of wood to 'lever' the horizontal piece of wood to push the front wall of the plastic airbox forward so that the inner boots cover the inner two carb intakes. After clamping the two inner airbox rubbers I then re-inserted the metal airbox sleeve running from air filter box into the plastic airbox plenum and tightened the metal clamp that holds the plastic airbox/metal sleeve and airfilter box together. Then I had (badly needed) a beer...

@toooldtodieyoungmotorcycle Take a bow Sir. I watched all 24 videos. Amazing job, great detail and honesty. I have learned a huge amount and without this video series would not have had the confidence to restore my own Yellow F2 400/4. Thanks very much. 👋

good

Nice job thank you 👍

Well done, very good video.

Hi mate; I do not live in UK. I want to buy those footrest but I do not know where. Seems the same as the front ones. Also, is not clearly where is the fitment difference between an R and RS seat... Thanks

Hello, I am looking for a chain guard for my PC50. Can you help me please

Hello, do you have the catalog for this motorcycle?

Thanks for taking the time to do this series, I just found a 75 cb400f and it’s my first bike. So happy your video exists.

Just watched your video Nice YCS5E but it does have a few falts, sounds like you have been talking to my mate Steve Chapman, his tank is NOS and very rare with reverse colours so hence is price, I too have that same tank on my YCS5E. Your tank is the right sise for your bike but what is wrong is the conbination of Tank to seat, Yamaha made two sises for the CS5, large tank and shorter seat or small tank with longer seat which was for the US market, So what you have is the UK big tank with the US seat and so to make it fit they have move the hinges up one bolt hole, to get round that you would have to get a small tank or stay with the tank then change the seat, I have come across this issue with people many times before, so buying Steve tank at £750 would be the same as yours and you would be no better off arpart it is in the original purple paint, very nice!! I have known Steve a long time and like me knows his 1970s Yamaha stuff. Hope this helps and keep up the good work as I love all Yamaha YCS5Es and YCS3Es Colin🙂🙂🙂

That looks like the tank that is made in India. I made a similar bracket to locate it. They are £230 direct but i had mine in primer as i paint my own bikes. Your taps are wrong, you can get taps that will have a 90 degree turn at the exit point making it very easy to clear.

Amal would have not told you to fit choke sliders without the cable to hold it off. You are now operating on full choke so i doubt it will make 40 mph before fouling the plugs. You do need a reasonable skill level and some correct tools plus knowledge of old British bikes to run this. I have spent over 50 years on these bikes so far

You have the wrong carbs. They should be 32mm and you have 30 mm ones. I would doubt the jets are appropriate for the bike either having the wrong carbs. All Spitfires using the Amal type are 32 mm unless someone has fitted a Lightning head with smaller intakes. Mine starts very well using genuine old Amal 32mm

Compression is miles too low for that high compression engine. It should fire but will not be very fast and will burn oil

My Spitfire starts easily but i have worked on these old bikes for over 50 years.

Where i can buy a seat like that

Great to see you both doing such a thourough job, it's going to be a well sorted wee bike!

I luv that you’re getting your wife involved with this bottoms up to u both

Just trim the gasket down paper one's are always slightly larger than needed.

I'm waiting your video at south korea

Whats happened to the rest of the restoration videos...was getting interesting 🤔

do you have the part number for the luggage rack? Is it oem?

Just wondering how comfortable seat is for pillion? As the seat seems to fall to the rear causing pillion to slide off, not a criticism just wondering as I am after two seater retro and the thruxton is on my short list, kind regards mike

Where did ya order the carb rebuild kits from? Cheers from Detroit.

Really - you left the choke slides in ! Muppet !

Hi, are you on Facebook? Or is there a way to contact you about the Honda 400/4 build. Need help (me)

Thanks so much !! Thinking of buying one

What place did ya get the parts from in Uruguay???

I picked up a little non-running moped here in Los Angeles for a few bucks. I STILL don't know what it is, but I DO know that the engine is modeled after the PC50K1; that little gear selector is a dead giveaway, lol. I'll show my wife your video, and maybe she can help me restore this one. Cheers!

What was the place you got the parts from?

Any one that can take on a quad carb Project and succeed Is a champ by all means To get all four cylinders running No leaks All plugs correct tan No bogging No flat spots No over flow Thats a strong person to Face that kind of challange I am one of those novices.