Suzuki RM-Z 250 - Recent Questions, Troubleshooting & Support - Page 7

You mean the flywheel? You need a puller for that, and it threads into the flywheel with left handed threads!

YOUR VALVE CLEARANCES NEED TO BE ADJUSTED BACK TO FACTORY SPECS...IN OTHER WORDS GET IT SERVICED AT A BIKE SHOP

YOUR BIKE HAS A POWER VALVE (DIAPHRAM FUEL PUMP) THAT GIVES A SHOT OF GAS EACH TIME THE THROTTLE IS TWISTED. WHEN THE BIKE IS HOT, IT FLOODS EASILY. DON'T HIT THE THROTTLE WHEN STARTING THE BIKE WHEN THE ENGINE IS HOT.

Like I told somebody earlier to day lower the octane rating of the gas you are using....repost if you need anything futher......

get the thermal wrap under the gas tank then if you can afford it buy the new vortec clutch it helps with starting a four stroke

i usually adjust tension by lifting the chain from rest to 1/2 inch & when it starts to resist its at that point !
make sure you adjust both sides of the rear axle the same amount or the wheel will be out of alignment!

needs the carb cleaned out.

Use 10w40 motor oil in the gear box. Don't use any synthetic oils, oil marked "EC", or oil with "special" additives. Stick with the major brands; Pennzoil, Quaker State, Mobil or Shell. If in a hot area like Texas or New Mexico go with 20w50.

Use TWO STROKE ENGINE OIL in the pump. If not using an automatic oil pump, then mix the gas and oil 32 to 1. That equals 4 ounces of TWO STROKE ENGINE OIL to one gallon of gas. NEVER use motor oil in the gas. Only two stroke engine oil.

it mite be getting in to the magneto(under the cover near your gear stick) you can test it by starting it at home and get the hose and squirt it or the wires mite have been damaged.

about 22.1 oz. give or take a .1 oz. or two

It's in the top of the cylinder head. Remove the seat then the gas tank, you should see the spark plug cap sticking up out of the cylinder head then. Pull it off by the cap not the wire. Use a spark plug socket to remove it and replace with the factory plug. Check the gap on the new plug with a wire gauge. Carefully put the plug back down in the hole with the plug in the socket. Screw in with your fingers til it's hand tight. Tighten 3/4 turn with the ratchet.

I don't know what may be wrong with the top end, (if anything), but I wish I could come up with a line of BS like these guys have. I could maybe get rich by constantly servicing just one bike. What happens when the bike "breaks down"? What does the shop say is wrong with the top end such that it needs to be rebuilt? What do they do to fix the breakdown each time? What do they charge you?
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serious problem. blown head gasket.

sounds like exhust valves rusted open or hung up.. pull head on cyclinder... drain crankcase oil put in fresh oil.. reassembile head with new gasket.

The splines on the shifting rod could be worn or the shift lever itself could be loose causing the bike not to fully shift into gear.

If the problem is not that simple then you will have to go inside the gearbox and see if the shifter forks are worn.

i just had the same problem on my 04 its the valves they need to be adjusted

Kick starting is sensitive to fresh fuel. Tank should be completely drained

Hi, you may need to have the valve clearance checked .

Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plug and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
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Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Before putting the slides back in the throat of the carbs, Move the clip on the jet needle one notch lower. It may be that you will wind up going two notches. Try one notch first. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

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drain the oil(all of it) and put on a new filter.sounds to me like you are missing a gasket to the crank case.