Suzuki GN250 1988 carb boot problems

ammo_chick · L Plate Warrior Joined: 27 Apr 2014 Karma :

Hey everybody!

Got a 1988 Suzuki Gn250, not terrible shape but bad enough.First bike. Carburetor was crap so i got a new one, stuck it on and it would turn over but wouldn't fire up, the carb boot was tore, I was messing around with it and it came apart the rubber piece coming off and the metal brace still attached. The bolts wont budge for me to remove the rest of it. Any ideas in how to lossen them up and get if off with damaging anything. The bolts are still good but I dont want to strip them.

Thanks in advance.

Scotsman37 · World Chat Champion Joined: 17 Aug 2004 Karma :

Have you tried using an impact driver on it?

Piercee100 · Trackday Trickster Joined: 07 Mar 2011 Karma :

Yep, good old fashioned impact driver. I had to go out and hunt one down since all the big name tool shops want to sell you a drill!
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Rides: Honda H100a (Retired), VT500e (Sold), Kawasaki ZX400 (sold), Kawasaki GT550 (Sold), Suzuki Inazuma (Daily), Honda CD185t (Broken), LML Star 2t (Last run edition).

ammo_chick · L Plate Warrior Joined: 27 Apr 2014 Karma :

Thanks, I just called a friend and bringing one over later. Hopefully that will do the trick. I dont have one of those lying around. Sad

Scotsman37 · World Chat Champion Joined: 17 Aug 2004 Karma :

yen_powell · World Chat Champion Joined: 22 Jun 2008 Karma :

I have found that once the impact driver is set to undo (test it by pushing it on the ground to see which way it turns) and located in the stuck bolt or screw, it helps if you push it and twist slightly to take any slack out of it before hitting it with a hammer. This means all the force is used to turn the bolt straight away.
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Blackmail is a nasty word........but not as nasty as phlegm!
XT1200Z and a DR350 in bits

ammo_chick · L Plate Warrior Joined: 27 Apr 2014 Karma :

Ha yea no doubt. I will probably be frequently posting on this board, I am trying to do everything "diy" so I will know the bike inside and out.

smegballs · World Chat Champion Joined: 28 Oct 2007 Karma :

I too have a GN 250 since last week or so. I'm probably going to refurb most of the stuff on it as I want to ride it down to portugal this summer so I want confidence in the machine!

This is the rubber inlet stub between the head and the carb right? Mine is also split and I need to replace it really, there is a chinese vendor on ebay selling them new for 15 quid delivered, long arrival time tho.

What condition is your exhaust in? Mines rotten to hell and back, shame really as the rest of the bike (1997) is pretty good nick.

Scotsman37 · World Chat Champion Joined: 17 Aug 2004 Karma :

Or buy it via this website for only $8.97 Yes, you've read it right from directly China via the US website the exact same thing for a a fraction of the cost, and if you change £15 to US dollars that would be about $24

Big saving!https://www.aliexpress.com/store/product/FREE-SHIPPING-SUZUKI-GN250-SP250-GN-SP-250-13110-38200-CARBURETOR-INTAKE-PIPE-MANIFOLD/817202_764172910.html

https://i00.i.aliimg.com/wsphoto/v0/764172910_1/FREE-SHIPPING-SUZUKI-GN250-SP250-GN-SP-250-13110-38200-CARBURETOR-INTAKE-PIPE-MANIFOLD.jpg_50x50.jpg

They also sell loads of other stuff too for the GN250

https://www.aliexpress.com/store/group/GN250-PARTS-AND-ACCESSORIES/817202_212293609.html

smegballs · World Chat Champion Joined: 28 Oct 2007 Karma :

Loving the "made in japan" on the manifold..... Laughing

Never used aliexpress before is it a legit site?

Scotsman37 · World Chat Champion Joined: 17 Aug 2004 Karma :

Yes, it appears to be and they are definitely a lot cheaper!!!

ammo_chick · L Plate Warrior Joined: 27 Apr 2014 Karma :

smegballs · World Chat Champion Joined: 28 Oct 2007 Karma :

Looks better than my much newer one! You got any mods planned? For instance the stock 14mm master cylinder is way too big for the single 38mm brake piston I've ordered an 11mm one which should have much better feel and generate more pressure in the lines - hence more braking power.

With the 11mm M/c it should bring the lever back into the firm end of the recommended brake ratio.

I've started a show and tell thread on my trials and tribulations here if you're interested: https://www.bikechatforums.com/viewtopic.php?t=289076

smegballs · World Chat Champion Joined: 28 Oct 2007 Karma :

Well I just ordered that intake manifold from aliexpress!

Made the order but paypal wasn't an option so didn't really proceed with it. Then got an email today saying that if i would like to proceed their paypal address is..... Sent them the cash, about a fiver, and have just go the confirmation on aliexpress that they have received the cash. Let's see what arrives in a few weeks..