Newly acquired GZ250

[jrou111]

Hello all! I just picked up a 2002 GZ250 from a neighbor for a couple hundred $. It had been sitting in their garage for several years. I'm planning on fixing it up and selling it, once I teach my wife to ride. :rawk:

http://i18.photobucket.com/albums/b124/jrou111/bamarides/22080DD0-8AB4-4B7A-932D-40694BF4377B-7889-000004DD7E1035FB.jpg

http://i18.photobucket.com/albums/b124/jrou111/bamarides/A3FB85F1-C081-48F6-8115-7132B4ABAF03-7889-000004DD8271B664.jpg

[5th_bike]

Yay Welcome to the Forum ! ! ! :2tup:
If you have been here regularly, you know what to do:
- replace the tires
- replace the gas
- replace oil & filter
And a couple other things, others will fill in.

And I don't have to tell you that these little bikes really purr when they're clean ! :)

[blaine]

Welcome to the family. :cool: :)

[Water Warrior 2]

Good grief, you have a brand new bike for a couple hundred bucks. Where am I when these deals come out of hiding?? You will absolutely need a new battery too.
Add new tubes when you get tires.
We will help you get it up to running order with some advice and a little TLC on your end. Welcome to the forum. The carb will be your biggest headache but we can solve that easily enough.

[alantf]

Wish I had that speedo. I've been riding/driving in a "kilometer" country for over ten years, but after doing forty years in a "miles" country, I still find that I'm mentally converting kilometers per hour into miles per hour so that i know how fast I'm really going. O_o

[Fawlty]

[c:102oodnj][/c:102oodnj]Wish I had that speedo. I've been riding/driving in a "kilometer" country for over ten years, but after doing forty years in a "miles" country, I still find that I'm mentally converting kilometers per hour into miles per hour so that i know how fast I'm really going. O_o

Yes Alan, I am the same. Pity they don't fit the same dual reading speedo on the European models, after all the UK is in Europe (or is it?), and still operates mph. It would appear that the North American models are fitted with the dual clock because the US has mph and I believe Canada operates kmh.

[blaine]

[c:24wj5u7m][/c:24wj5u7m] I believe Canada operates kmh.

Yep.Canada is Kmh.We shifted from MPH in the early 70's.
:cool: :)

[Water Warrior 2]

[c:1dtao041][/c:1dtao041] I believe Canada operates kmh.

Yep.Canada is Kmh.We shifted from MPH in the early 70's.
:cool: :)
Actually it was the late 70's. The auto industry had a lot of fun in those days with anything metric. Initially the speedo registered in kilometers but the odometer registered in miles. A really great way to keep owners on their toes and create confusion for a couple years.
Then of course the conversion to metric for the nuts and bolts was another fiasco. Some stuff was metric and some wasn't. Metric fittings were painted blue for identification while under the hood. This carried on for years and years. Still does in many cases.
Anyone wanting to work in the auto industry as a mechanic had to buy nearly 2 times the amount of tools just to get their job done. It is still a screw up when we have 1/4, 3/8, 1/2 inch drives with assorted SAE and Metric sockets.
So we have Metric, SAE, JIS from Japan and some stuff that doesn't seem to fit anything.
Thanks to Alantf for telling us about JIS screw drivers and screw heads and how to make the regular screw drivers work on JIS heads. I used to curse at those darn Philips head screws every time I got close to them.
Maybe we should just convert to the Robertson head(a Canadian invention)for everything just to keep the tool companies busier with another product line.

[jrou111]

Thanks guys for the welcome. BTW, I got the title and it's actually a 2003. It has only been ridden 2 miles since 2005 when it was last registered.

Tonight I worked on the bike. I went from this...

http://i18.photobucket.com/albums/b124/jrou111/bamarides/1FEE7F70-DC5F-41A2-9027-36E92DC3529A-9258-0000059A7BAC1A09.jpg

http://i18.photobucket.com/albums/b124/jrou111/bamarides/C0E644AF-0A0F-418E-9D48-F6DFD3BD572C-9258-0000059A77EBB7FE.jpg

To this...

http://i18.photobucket.com/albums/b124/jrou111/bamarides/F3F75463-2C10-4EE2-9057-A09BD7F05A44-10247-000005FDB0E3BCDC.jpg

And from this...

http://i18.photobucket.com/albums/b124/jrou111/bamarides/43D0B3BC-873E-4A6E-B29B-723F2312C34C-9258-0000059A8473FB2F.jpg

To this...

http://i18.photobucket.com/albums/b124/jrou111/bamarides/7D839004-2AFB-40F8-84A0-F0CA22A90C15-10247-00000606F5E37412.jpg

http://i18.photobucket.com/albums/b124/jrou111/bamarides/B9C6420D-4BB3-461F-8BAC-20258C238A28-10247-00000606F9E36895.jpg

http://i18.photobucket.com/albums/b124/jrou111/bamarides/35D07B80-D7F3-46A7-BF4E-C49B4BF254BA-10247-00000606FDE4C696.jpg

Carb should be back together tomorrow after it soaks 24 hours in Pine-Sol. The old battery was an AGM sealed unit and surprisingly is holding a charge...so far. The tank didn't have ANY rust or varnish inside, and the screens on the petcock valve were clean.

I've got a dual sport camp and ride trip this weekend, but I should be able to get it running on Sunday when I get back. My wife is eager to ride it!

[Rookie Rider]

Awesome, welcome to the forum Mr. Handyman.

[mole2]

Welcome to the forum from South Carolina. Ride safe.


:)

[Water Warrior 2]

Awesome TLC. Had a thought..............have you found any frozen links in the chain after all the years of being parked? There may also be some rollers that don't want to rotate.

I don't doubt your wife is excited and wanting to learn to ride. When Lynda got her GZ she was very happy with the size and lack of intimidation factor that other bikes possessed. The GZ was a wonderful 1st bike and allowed her to develop her skills and confidence before moving up to her Suzuki M-50.

[jrou111]

Thanks again, guys.

So I soaked the carb in Pine Sol for 24 hours. This is the result...

http://i18.photobucket.com/albums/b124/jrou111/bamarides/109985DF-BD2D-4DFA-95A7-E798CC2F1F71-10898-00000654CDA3F9F9.jpg

http://i18.photobucket.com/albums/b124/jrou111/bamarides/338B279C-3187-441D-A261-4BF632549549-10898-00000654D200B42F.jpg

http://i18.photobucket.com/albums/b124/jrou111/bamarides/762C165D-3937-4374-944F-D0072D467E48-10898-00000654D4B31D94.jpg

This was some of the dirt in the bottom of the pan...

http://i18.photobucket.com/albums/b124/jrou111/bamarides/9167D36E-BA8B-4812-9A1B-2DD61D1BA915-10898-00000654D8BF4440.jpg

And the nasty gunk still suspended in the liquid...

http://i18.photobucket.com/albums/b124/jrou111/bamarides/F70EF0E0-DF06-40A2-ADDA-42CB57750A64-10898-00000654DAF499E6.jpg

So after drying everything, I assembled it all back together...

http://i18.photobucket.com/albums/b124/jrou111/bamarides/A88265C8-95D1-400E-8CD6-20ED64B1F783-10898-00000654DE4DEB85.jpg

http://i18.photobucket.com/albums/b124/jrou111/bamarides/6A94B475-9CAD-456C-807A-75EAF44283A4-10898-00000654E2B14612.jpg

With a brand new battery in place, I went to crank up the bike. I got the bike to start, but it will only run with the choke on. This makes me think that a circuit is still clogged. I'm going to tear it down one more time and run a wire through all the circuits. Other than the service manual, is there a really good tech thread on here on carb rebuilds?

[blaine]

Did you drill out the plug covering the idle mixture screw so you could access the idle mixture needle? When the bike won't idle without the choke on is a sure sign of the idle mixture jet plugged.The plug needs to be drilled out & the mixture screw adjusted anyway as they are very lean from the factory.When the idle mixture is a little richer the bike will start easier,idle smoother,& sound better.
:cool: :)

[jrou111]

Did you drill out the plug covering the idle mixture screw so you could access the idle mixture needle? When the bike won't idle without the choke on is a sure sign of the idle mixture jet plugged.The plug needs to be drilled out & the mixture screw adjusted anyway as they are very lean from the factory.When the idle mixture is a little richer the bike will start easier,idle smoother,& sound better.
:cool: :)

I sure did. I do that with every bike I've had that was carb'd. Even all the way up to 8 turns out, the bike still wouldn't idle without the choke on. I'm gonna tear into it again, I think I swapped the primary jets 1 & 2 in the wrong spots, and I also think that some of the circuits might still be clogged.

If this doesn't work, I'm just going to look for a carb from a running bike on eBay. :cry:

[jrou111]

Got it running Friday! Didn't get to mess with it much this weekend since I went on a dual sport ride and camp.

https://www.youtube.com/watch?v=L8P5OOfM7dM

[blaine]

Got it running Friday! Didn't get to mess with it much this weekend since I went on a dual sport ride and camp.

https://www.youtube.com/watch?v=L8P5OOfM7dM
From your video it sounds pretty good. :2tup: :)

[mole2]

Got it running Friday! Didn't get to mess with it much this weekend since I went on a dual sport ride and camp.

https://www.youtube.com/watch?v=L8P5OOfM7dM

What was the problem?


:)

[blaine]

Got it running Friday! Didn't get to mess with it much this weekend since I went on a dual sport ride and camp.

https://www.youtube.com/watch?v=L8P5OOfM7dM

What was the problem?


:)
"jrou111": With a brand new battery in place, I went to crank up the bike. I got the bike to start, but it will only run with the choke on. This makes me think that a circuit is still clogged. I'm going to tear it down one more time and run a wire through all the circuits. Other than the service manual, is there a really good tech thread on here on carb rebuilds?

:) :cool:

[jrou111]

Got it running Friday! Didn't get to mess with it much this weekend since I went on a dual sport ride and camp.

https://www.youtube.com/watch?v=L8P5OOfM7dM

What was the problem?


:)

Starter and main jets were wrong spots, primary was still a little clogged, and the idle screw wasn't adjusted correctly as per manual. Took all of 20 minutes to take it all off and clean/swap/flush and get it back on the bike. I've ridden it around the neighborhood a bit. Gonna take it to the DMV to get a tag. The one on it is from 2005! O_o

The power delivery is definitely thumper-esque. Quite a bit less power than my WR250X rev monster :poke2: but good putting around town. At 119 miles now, I've still got quite a bit of break in left to do.

[northsidegz]

Awesome. Great deal for you on a great bike. Congrats! Hope your wife is enjoying it.

[mrgz250]

you have the right idea but taking the carb apart like u showed in the photos is wrong I not been a smart ass
but if you lay it out the parts in order on a clean rag or paper towel it will be a lot easer to clean & rebuild the air screw is about 2 1/4 turns out mine is set to 3 1/4 turns out use ngk dr9ea spark plug yalvs is ex .09 to1.0 mm in is .05
13.5 yrs& almost 80k on her factory new condition

[Goose51683]

So glad this guy (MRGZ250) is gone!