Yamaha QT50 basic repairs with full audio take 2
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- เผยแพร่เมื่อ 19 ต.ค. 2024
- Ok, I have voice-over going through entire video on this one. This video gives you an idea of how to go about basic repairs like rear brake replacement, rear wheel replacement, exhaust removal, transmission oil change, rear brake adjustment, cylinder head torque, adding a temp gauge, etc.
I am an aircraft and powerplant mechanic and in the aviation industry we simply just never encounter stud or bolt breakage because we use compound every time that we touch any threads. I work on cars, boats,and etc. and run into stuck or broken bolts and studs all the time.I start all new projects by spraying all fasteners down with penitrating oil and it makes a huge difference!
that's a great tip
Great videos to help us novice folks who just are getting into the QT50. I just picked up a 82 on Craigslist and it runs but not great. I have ordered a few parts and hope to get it running better after getting pointers from your videos. Thanks for posting all these helpful videos.
sure thing, more to come
@@jackrutherford-1 1981 yamaha towny..runs superb..know of any potential buyers? Thanks
@@close202 try the yamahopper Facebook group
@@jackrutherford-1 thankyou
“Get lit, get it up and get it in!” Words to live by...
After upgrading my top end to 60cc my spark plug was really hot to touch, is that normal?
Yes. What spark plug are you using?
get it lit, get it up, and get it in.
That's what she said.
do you like working on the Yamaha or the Urban express better, which one is the easiest
Hello,
Nice video. What kind of tire have you put in the back and front.
I also have a qt 50, rode with since 1994.
Thanks in advance for the answer.
Welcome
Edmond
I put the IRC NR 77 on the back. 14" 70/90 which is technically a front tire as per IRC but the 80/90 (technically the rear tire size for this tire) is a bit too wide although it might work without the fender. Shock would probably be the issue. You can put that same tire on the front but will need to adjust the fender stays. Kenda makes a 14" tire that is skinnier and more appropriate for the front. I think it's the kenda k261
I am having trouble getting the rear wheel to come off. I took off exhaust, rear fender and the nut off that holds the wheel on and disconnected the brakes in case the brake pads were too tight but still no matter how hard I yank on it, wheel is on tight. Any suggests as I did not want to try to tap it off as worried about the gears getting nicked up? thanks.
I think at this point, you have to tap it with a rubber mallet.
Thanks for the advice, I was afraid that was the answer. I posted this question on Moped Army too, so you will see it there. thanks again...
runs well at at start up and for the first couple of miles. Once warmed up it dies every few blocks. It starts right up every time but dies after 4 blocks. Thoughts? only does it when its warm. Cleaned tank and replaced fuel line / filter
I like to use clear/transparent fuel line and filter - that way you can see if it is getting fuel and how quickly it is getting fuel. Fuel delivery issue seems to be the place to start. Could be other things. With something to catch the gas, pull fuel line at carb and see how gas flows out. Do the same right after the petcock. Also check at the drain screw on float bowl.
as a test, can i run straight line out of tank (bypass petcock)
you could. I assume you have a fuel filter on.
churioz26
One question where I can get a rear brakes for my bike?thank you
If you can help me
What is measurement on the brakes ?
I broke 3 of the four bolts off in the cylinder, got them out with a drill that cuts counter clock wise
I watched one of your videos and I seen that you had a surplus store or part store that sold all equipment in parts to a 1983 QT 50 is there anyway you can give us the name of that company
no one sells all the parts. babbittsonline.com has some stuff. so does treatland.tv and boats.net
Could you recommend a good surplus or the part store that sells all the equipment and pieces for a 1983 Yamaha qt 50
Treatland
I have a little rust in tank. What you suggest cleaning it with?
Brent Chastain evaporust
churioz26 The evaporust worked GREAT! What airfilter are you using? I misplaced my breather box :(
I just broke an engine stud today like you talked about in this video. What do I do?? It still runs fine but feel as tho I'm lacking some compression any tips would be greatly appreciated
So you're using 3 studs instead of 4? If so, yeah you probably lost some compression. You can test with a compression gauge or use the thumb test. I'd have to see the broken stud. there are many options. If enough of the stud is still outside of the engine, you may be able to still get it out from the outside. If not, then you'll probably have to drill it out with some titanium drill bits. If you do have to drill it out, then start with a very small drill bit at low rpms and use some WD40 or oil from time to time to lubricate the drill bit. Work your way up in drill bit size. Sometimes you have to drill all the way to the end of the stud to get it out. This can be a very long process - several hours. So if you get frustrated it better to take a break than get neanderthal on it. Here's a good tutorial www.wikihow.com/Remove-a-Broken-Bolt
churioz26 hey thanks man for the help love your videos keep em coming thanks again
I've also had pretty good luck with these screw/bolt extractors.
www.lowes.com/pd/SpeedOut-Damaged-Screw-Extractor/1000170531
you drill into the broken stud with one side of the extractor and then you use the other side in reverse on your drill. It will dig into the bolt and unscrew it.
I remembered that part of my problem was a broke off the drill bit in the stud when I was trying to drill it out. Don't do that. That made things 10x harder.
churioz26 thanks I'm about to try that today also my tire was bald so I put a new one on yesterday which was a pain but I must have punctured the tube cause now it won't hold air do you suggest I patch the tube or get a brand new one
cool videos on mopeds. what size tire you use you taked too fast to cach size.?
IRC NR 77 70/90 x 14
hi if you put the 3 way handel to run with no key in enition do you get spark from pluge?spark pug rest on side pistion.
Bruce Wilmot i think you need the key
I would like to add on/off tires to my QT50. Do you know if Shinko 244 Dual Sport Front - Rear Tire - 2.75-14 would work?
kind of large for the front tire and rear for that matter
Can you redo this video I'd like to see everything at least what you could do is do a video on how to change the cold start hard start cable and speedometer cable also I'm trying to look for videos that I could use to get information on fixing my I've watched at least probably about 30 videos neither one of them have given me any advice that I needed and I feel that you can do it
Last week i has blow wheel out and i fix it now my wheel dont want go back on is hitting brake line and stand
Anyone know if the Yamaha mj50 is the same??? I have an 82 I’m trying to replace the rear brake shoes on now
Pretty much the same
my key swich is 8 wires if I chang it to 4 wire plug will it work?
I'm not sure on that one.
do you know what air filter I should order for my qt50?
You can get a stock air filter element on ebay for pretty cheap. If you are going aftermarket - K&N RC-2540 or any 28 or 29mm mesh air filter.
ill say it got a bit confusing for a bit last night trying to distinguish the listed diameter to what the actual diameter was, but i ordered a 1 1/4" x 3" Uni Filter today and some 8mm fuel line/filter. hoping for good fitment. thanks for the reply budday! moar vids pls
R Weed
Ok, I should've been more clear. The key measurement for the air filter is the diameter of the air intake on the carburetor (where the air filter would attach). So that measurement is 28 mm or 1.10 inches. the K&N I mentioned above will fit. If you go with a different air filter, you want to make sure that where it attaches to the carb is 28mm. I actually have some for sale that will fit.
what thodeal cable whare to buy one
you can get most cables for the qt50 at treatland.tv - ebay is another good place
Does anyone have an exhaust for a 1986 Yamaha QT50 and how much
I may have one.
Yamaha qt50 engine for sale www.ebay.com/itm/333970250803
qt50 I bypass oil pup
I do on most of mine as well. pwonly.com and peeweecycle.com has block off plates or you can use a freeze plug.
@@jackrutherford-1 Do you remember what size freeze plug you used on the qt50? I want to do it to my qt50. I just finished up my 81 honda express 2 speed which took a 22mm to 25mm freezeplug. Thanks to your videos I finally got it running nice and premix now.I removed all the junk autochoke system and capped everything off. I also removed and plugged the oilpump. Now the bike runs so much better and starts easy.
Will Gibbs search my site at qt50.net. I bet I put it there.
Will Gibbs search my site at qt50.net. I bet I put it there.
Will Gibbs search my site at qt50.net. I bet I put it there.