Going to try the new Hummer G4

Ive seen someone put a zongshen 250cc in a xr200 frame, the mounts were all the same...i cant find the website now but ill try to find it and I might have a look at my mates xr250 and compare it to my tomahawk kx 250.

Hey guys

Need some help on adjusting the rear suspension it is really soft any1 know how ?

Thanks

You need to get yourself a rear shock spanner and tighten down the spring. Loosen the top lock-ring first - then tighten the bottom ring to compress the spring. Don't tighten down more than a three full turns - otherwise you are exceeding the disign parameters of the spring. Once it's adjusted down - re-tighten the lock ring on the top. If you don't want to buy a shock spanner - you can use a hammer and punch - but this will ding your locking and adjustment rings (most folks don't worry about it).

There are also dampening adjustment screws on the rear shock to adjust the compression & rebound once you've got the ride height set up OK.

If these two adjustments don't work well enough for you - then you'll have to remove the rear shock and buy a custom spring. Most suspension guys who do MX bikes will be able to get you an aftermarket heavy duty spring - but they are expensive!

If you look up "Adjusting MX Suspension" on Google, there are a number of articles on how to set your shocks and ride height correctly.

on my shock, i rebuilt it with thicker oil, i cant remember what it was, but that and a few turns on the spring, it was handling and dampening like a dream, its worth the time taking the shock apart and replacing the oil. if you need instructions on how to dismantle it just message. good luck

Cheers linkavitch yeah got my old man to have a look at it and we soon worked out what to do .

Thanks

Thanks also rodbox didnt see ya reply there

Need a bigger front and rear sprocket wondering where i could possibly get them from?

Hi Mate,

You can order them mail order from here.

Saturday Night Cycles Home

Be sure to give them the specs for the chain size and sprocket mounting holes - since they sell a lot of different models.

I'm currently using a 17 tooth front sprocket and a 56 tooth rear sprocket (purchased from SNC) and they work really well.

You will have to either remove or shorten the chain roller guide, since otherwise the chain angle will be too steep with the bigger sprocket.

Hope that helps.

OK all,

Just finished preparing the Kuda Pro ( HUMMER 250cc OHC Zongshen)for this coming spring and found a few things that needed doing.


Top suspension frame mount had several cracks around the welds and needed rewelding & strengthening
Top head stem bearing needed replacing
Changed the handlebars - finally after 2 years and bending them back too many times
Adjusted the valve clearance 0.05mm
New Battery
After reassembly chased an electrical problem that ended up being a connecter pin on the CDI
Changed oil
Checked and started OK, let warm up and a quick ride around the back and put it away for the night.

So my problem started once I changed the oil and started the bike next day.....Ploombs of white smoke for a few minutes and of course a bit of a miss at medium revs. Dissapointed, put it away.

CAme back to it in the afternoon and tried again and the smoke was hardly noticable after a few seconds and is now almost non existant, except under hard acceleration

I guess this may need a top end strip down, but in this air cooled motor, is there a possibility that it may be just a head gasket or someting else?

PS are there any manual showing torque settings for the bolts for this engine?

Rob

Hi Cujo,

You may have just had some water condense out in your carbie whilst the bike was laid up.

If not, a new 250 Zongshen head gasket is available from just about anywhere these days and changes over with no hassle.

If you don't have the torque for the head bolts in your owners manual, there are a few tech threads on this site that will give you the torque values you need. Be careful not to go over the required torque values, since the head bolts stretch easily.