20 Most Recent 2003 Suzuki RM 250 - Page 8 Questions & Answers

Bel Ray Gear saver for two strokes is good stuff. Available at any bike dealer. You can also use regular motor oil (10-40w) but I've had great luck with the Bel ray. It's synthetic and made for that application.

hi mate you float is to high in the carb take the carb off and take the bottom casing off and adjust the float to the correct measurements in the manual if the float is too high it is allowing to much fuel in and so it will flow over the over flow and out the tubes it is simple puch the pin out and adjust the metal where the little valve is hanging onto with a pair of long nose pliers good luck

change your plug and adjust your air screw brass flat head screw nere the air filter boot screw right (in) gently then turn (left) out 3 quarters of a turn try that then go a quarter of a turn at a time out till you find your sweet spot

Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock. www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx

Look at the clutch diagram on the Babbit's site. Chances are that the "E" ring #14 was not put on the clutch rack #13 that the pinion shaft #16 engages to pull the pressure plate #8 outward, disengaging the clutch. Without the E-ring the rack can fall inside the clutch and is unable to pull the clutch plates apart. This is likely to be where the problem is. By the way, look at the sequence all the parts are to be installed in. Does your clutch assembly match that sequence? Let me know what you find.

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Put it on a stand take a tape measure. find the length from the middle of the axle bolt to the bottom of the fender. Ok next put the bike on the ground and sit on it this may take more people put all of your weight on the bike have some one measure it the same way as when it was on the stand. now find the difference of it. the correct sag should be about 100mm. if it is not the loosen the ring at the top grab the spring and spin it right or left depending on your measurements.

Your bike is a 2000 model year. The 10th digit is the year designation.

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Probably due to a bad crank seal on the clutch side. The extra smoke is from the trans fluid burning through the cylinder.

dear benny it seems to me the first thing to do is to clean carb. it sounds like the pilot jet is pluged which is the jet that controls 0-1/8 throttle setting. remove pilot jet and soak in carb cleaner use comp air to clean only use visual means to see it is clear hope this helps jim

The clutch has two different types of needle bearings. One flat thrust bearing about 1" diameter and one caged needle bearing. The most likely culprit is the thrust bearing. This is a 5 to 10 dollar bearing and easy to replace if you have an impact driver to loosen the right case cover screws. Drain the oil, remove the right case cover then the clutch end plate. The bearing is there, and will probably come off with the plate.
SKU: 09263-10002 THRUST BEARING

http://www.shopmanualdownloads.com/rip/results.php?style=Motocross
you can download it here and it is the cheapest one i can find

go to cyclepedia.com to download the entire manual for your bike.around 20 bucks

Chances are that you can save your money, most of it anyway. Change the gearbox oil, ( 10w40 ), then ride for 50 miles. Now change it again. This should flush out the dirt and grit in the clutch plates. Also, remove the gas tank and then replace the clutch cable. Cables just don't get lubrication often enough. Yours is probably really old. Now try the bike.

If you do change out the clutch, keep the basket. Unless you hit it with a hammer, the clutch hub should be perfectly fine. Just replace the fiber plates. Unless warped, the steel plates should be perfectly fine also.

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what color is the spark plug when you take it out? All black too rich, a chalky white look is way too lean which is far worse than a rich mixture. I blew up my CR-80 when I was a kid from an improper fuel mixture. You really have to get that correct and the dealer can give you the numbers on that. Also you might wanna get a measuring cup from a local dollar store or discount store to help you add the correct mix into the gas. You said its boggy in 1st and 2nd....how is it from 3rd up? Has the carb been jetted for possibly a different exhaust pipe or filter that aren't on the bike anymore? Or did you change those components and not jet correctly? I'm going to log this as a solution, but its borderline a clarification request....

Hi .... Try this site for the oil.

http://www.opieoils.co.uk/c-852-recommend-an-oil-for-my-motorcycle.aspx

Other problem sounds like carb or air filter. Does it spit back through carb ?

I am going to stick my neck out here and hope I can help.
The springs are not at all likely to be the problem. Any chance the cable is hanging up and not releasing fully? Disconnect the cable at the gearbox, put the bike in gear with the motor not running and see if the motor puts a major drag on pushing the bike. If pushing the bike makes the wheel lock up or the engine turn over it tends to say the cable is bad.

It could be you were given the wrong hub. Compare the old hub to the new one. Do the various measurements match? Contact the dealers parts department and ask how many fiber and how many steel clutch plates are in your clutch. Did your 9 year old son play with a funny looking frisbie and leave it in the back yard?
Ask what plate goes into the clutch hub first > Fiber or steel? Did you install the plates that way? Did the outer clutch cap go on properly and rest against the outer plate? Do any of the fiber disks have a gap wider than the other disks?

Food for thought. I hope this helps.
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Install a new NGK spark plug ONE HEAT RANGE HOTTER THAN STOCK . Now go back to the 32/1 gas mix. The 32/1 is what lubricates the crank bearings and piston. At 44/1 you are asking for a seized piston and/or the need for new crank bearings. Be sure to use Two Stroke Engine Oil in the gas, NOT motor oil. Use premium gas, not regular. This should take care of plug fouling.

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 all the little airways and fittings in the carb. Remove the two screws on the outside throat of the carb and spray into the screw holes as well.

Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. 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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try adjusting the needle jet on the top of the carb down one setting this will raise the needle when getting in the throttle. Altitude has alot to do with this setting of the needle jet also. UM if this doesnt work try goin up one setting from original if this doesnt work the power valve may be malfunctioning till it gets lose and then works fine till cool down may be sticking.

redline.
and mix accordingly with a "ratio-rite"cup.

Sorry to hear you've been looking for an answer for so long, I just stumbled on the post. Sounds like a problem I once had on an '83 Honda Magna. This was the 1100cc version but I think the carb set up was the same. There are 2 parts that are suspect from the symptoms that you're describing. One is the rubber tube that connects the carbs to the block. These tend to dry rot and crack over the years hence letting in air and messing with your mixture as it enters the cylinder. The second thing to look at is the rubber diaphragm in the top of the carb. Should just be 4 screws that hold on the top plate and under is a gasket with the idle pin underneath. Again this tends to crack on these old bikes and cause problems. I suggest you buy these parts new though, used ones are likely to have the same problem.

Good Luck

If you don't have a oil tank or reservoir you have to mix it yourself. "https://www.6ya.com/callphilipforhelp