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Post by Kenho21 on Feb 25, 2019 22:35:23 GMT -5
Hello all!!
Brand new member and first post to the forum here. Nice to (virtually) meet everyone haha.
I very recently acquired two new (to me) scooters; a '95 and a '99 Yamaha Jog.
The '95 ran when I first picked it up, but once I let it cool and restarted it, it would bog very badly and stall until I gave it enough time and restarted it enough to get it warm and even then it would hesitate bog a bit. It did have great power and sounded fine other than the bogging issue though. Thoughts?
Onto the '99... Didn't start when I bought it and the guy I got it from said it ran this past summer, but it's been sitting with sta-bil in the gas tank for a few months. Wouldn't even start with a little starting fluid being sprayed into the intake, but felt and sounded like it had good compression.
For both, I plan on emptying/refilling the fuel and oils tanks, checking lines and petcocks (or whatever they're called on two strokes), changing the fuel filters and spark plugs, and cleaning the carbs. Can anyone think of any other bases I should cover to take care of the basics and continue with diagnostics/getting them running?
Thank you!
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Post by tsimi on Feb 26, 2019 1:29:46 GMT -5
Hi and welcome! Your To Do list sounds good so far. Get them cleaned up and let's see from there. All kinds of gunk and dirt can accumulate over time when things don't get used so often and just stand around for a while. While you take the carburetors apart and cleaned also write down the jet sizes for the main and pilot/slow jet. Usually a number stamped on it. The only other thing that comes to mind would be to open up the CVT cover on the side and check the drive belt and remove the front pulley and check the roller weights for wear or damage. These are not really essential yet to get the scooter starting and running but they will be the next thing to do.
Also you might wanna change the gear oil on both scoots. There is a drain bolt on the bottom side of the engine case near the rear wheel, open it and let the dirty, old oil drain out. Turn the rear wheel slowly by hand while doing that to get as much as possible out. Then close the drain bolt and refill with fresh, new gear oil. I think it was 100cc on the Jogs.
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Post by Kenho21 on Feb 26, 2019 6:46:53 GMT -5
Hello and thanks for the reply!
Good points. I will definitely open up the transmissions and change the gear oil. Going to be teaching my girlfriend her way around her new scooter as we go through this process, so I’m pretty excited and want to be as thorough as possible.
Any recommendations on type/brand/weight of gear oil?
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Post by tsimi on Feb 26, 2019 6:59:58 GMT -5
I use Yamalube gear oil for mine.
Forgot something, you also should check if there is a sponge filter still inside the airbox. They can deteriorate by time and then you get more air into the carb than you need or your jets are set to handle.
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Post by Kenho21 on Feb 26, 2019 8:49:46 GMT -5
I see that according to the manual 10W30 is recommended for the transmission... is that what Yamaha is referring to as the "transmission?" Are they referring to the gears?
Ahh, definitely will check the air filter! Thank you. I bet they will both be in need of replacing. Doesn't look like anyone has cared a great deal about either of these in a little while. I'll get them back to beautiful though.
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Post by geoffh on Feb 26, 2019 15:45:44 GMT -5
Kenho21,welcome to the forum I run a Yamaha cs50 jog just plodding on at 50cc,Yamaha jog is a model name that covers a range of "jogs" Europe got different specs than the USA some pictures would help,just to add to the super advice above the auto lube for the 2t is vital and the one thing that will kill your engine if it fails,ask here or read up in the tech sect.
Geoff
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Post by Kenho21 on Feb 26, 2019 19:18:55 GMT -5
Here’s a pic in the back of a pickup. Only pic I have at the moment and I’m not near it. That’s the ‘99 and the ‘95 looks the same...I think. Previous owner spray painted it. Any recommendations on weight for gear oil?  |
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Post by Jwhood on Feb 26, 2019 21:17:39 GMT -5
2 jogs..........2 freaking jogs,I can't even find 1 for a decent price,your truly blessed by the scooter God's!!!😉😉
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Post by Kenho21 on Feb 26, 2019 22:03:47 GMT -5
Haha thank you sir. Both need a little love and I haven’t even had a chance to dig into either of them yet, but hoping they’re not too bad off.
I had to drive 2.5 hours for one and only a few minutes for the other and paid a decent price imo as well. $625 for the running and driving one with the cold start hesitation problem and $450 for the non-running, but hopeful one that’s pictured.
Really hoping to have both decent enough to be on the road for my girlfriend and I to enjoy in a couple months tops.
How do you folks think I did?
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Post by Jwhood on Feb 26, 2019 22:10:27 GMT -5
Gotta get us some close up pics of the scoots,that's not that bad price wise
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Post by repherence2 on Feb 26, 2019 22:27:01 GMT -5
I see that according to the manual 10W30 is recommended for the transmission... is that what Yamaha is referring to as the "transmission?" Are they referring to the gears? Ahh, definitely will check the air filter! Thank you. I bet they will both be in need of replacing. Doesn't look like anyone has cared a great deal about either of these in a little while. I'll get them back to beautiful though. I run Mobil1 car engine oil (10w30) in my gearbox. it was recommended to me by a former local moped shop (Motosource) that specialized in minarelli engines and SMC Rexy's. I figured, they were the best minarelli tuners on Oahu, so trusted what they recommended. the sticking point was that, "it can handle up to 500 degrees". I bought parts from them a lot, they would help me troubleshoot from what I described to him, but the owner absolutely refused to work on my Chinese Ningbo GTX because it was Chinese. im pretty sure it was a quality issue for him, I respected that. |
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Post by Kenho21 on Feb 26, 2019 23:45:29 GMT -5
Gotta get us some close up pics of the scoots,that's not that bad price wise I’ll get some up as soon as I get the one out of storage once the weather warms up and the other next time I’m over my girlfriend’s place in a couple days. |
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Post by Kenho21 on Feb 26, 2019 23:46:47 GMT -5
I see that according to the manual 10W30 is recommended for the transmission... is that what Yamaha is referring to as the "transmission?" Are they referring to the gears? Ahh, definitely will check the air filter! Thank you. I bet they will both be in need of replacing. Doesn't look like anyone has cared a great deal about either of these in a little while. I'll get them back to beautiful though. I run Mobil1 car engine oil (10w30) in my gearbox. it was recommended to me by a former local moped shop (Motosource) that specialized in minarelli engines and SMC Rexy's. I figured, they were the best minarelli tuners on Oahu, so trusted what they recommended. the sticking point was that, "it can handle up to 500 degrees". I bought parts from them a lot, they would help me troubleshoot from what I described to him, but the owner absolutely refused to work on my Chinese Ningbo GTX because it was Chinese. im pretty sure it was a quality issue for him, I respected that. Sounds like good advice. I should probably see if I can find a decent shop near me that stocks some parts. Always seems like brick and mortar scooter shops either are dishonest or charge extremely high prices in my area. |
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Post by repherence2 on Feb 27, 2019 20:49:01 GMT -5
Sounds like good advice. I should probably see if I can find a decent shop near me that stocks some parts. Always seems like brick and mortar scooter shops either are dishonest or charge extremely high prices in my area. Very true. Motosource was only 2 blocks away from my apartment. It is true that his prices were higher, it was a brick and mortar store, and lease rent in Honolulu is ridiculously high. I was working a lot of overtime back then, my scoot was a daily rider, but the shop stocked a lot of minarelli go-fast parts. He even had used parts and he had small parts like gaskets, drive bosses, dowel alignment pins for CVT/gearbox covers, etc. Most of the other shops only stock Honda Elite type parts because that is where the market demand is. Don't get me wrong, at first the owner was a dick to me because i have a Chinarelli. Along the way he realized that I would walk in with a mission to spend some ca$h and that I wasn't futtin' around. I'd make it a point to always buy something from the shop on each visit whether it be a set of rollers, a couple spark plugs, a bottle of racing oil, a couple jets, etc. He shared his knowledge and expertise with me, so I made it a point to put some ca$h in his register whenever I visited him. It got to a point of monthly visits. Twice he had taida 54mm bores and 90cc V8 pipes to match the bore, both times he gave a substantial discount for the bore/pipe combo. Your 2 jogs have a lot of potential. In Hawaii, I don't think the Jog like yours can be registered as a "moped", it is registered as a "scooter" which makes it freeway legal and requires insurance. The Jogs you have are super rare on Oahu. |
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Post by 2smokeruck on Mar 14, 2019 1:24:03 GMT -5
I would definitely clean the card and check for the filter. Mine had no filter and a dead battery and my gas tank had freakin mountains of rust inside. New filter, belt, fuel lines and gas tank and she was rolling. They do 45 derestricted
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