Question about 2003 Suzuki RM 125

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I have an 83 rm 125 and know nothing about bikes!! I went to fire it up after it sitting for about 8 months and it started right up. Problem is when I went to put it in first gear it cuts the clutch is not engaging.I tightened my clutch cable but still nothing. I checked the tranny fluid and it's almost bone dry!. Could that be why?? Remember I am new to this whole bike thing. Please help!!

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Yes sir that would be the reason i my self have a 2 stroke ts 250 i use automatic transmission fluid for cars in my i have never had a problem all the years i have had mine

Posted on Mar 25, 2011


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1 Answer

1997 rm 125 won't start why should I do?

For your dirt bike to run you need 3 things:

1. Fuel (gas/air)
2. Compression
3. Spark

Start trouble shooting through these. Make sure your gas is turned on, and that it flows through the carb; if you tilt the bike does fuel run through the overflow tube in the carb? Make sure you have good spark; take out the spark plug from the cylinder, still connected to the ignition wire touch the threaded end to somewhere metal on the engine and turn the bike over. You should see a spark. Finally, do you have good compression, how hard is it to kick over etc.

These are the first things to trouble shoot, I would look on youtube if you don't know what you're doing, there are plenty of helpful videos there. You can also try putting a thimble full of fuel into the cylinder and then kick it over to help it start if it has been sitting a while.

Dec 09, 2012 | Motorcycles

1 Answer

I have a 2000 Suzuki rm 125, when in gear with the clutch pulled in the bike is always in gear and I can't stop with out stalling i have tried all adjustments on the cable. Any advice

Are you using the correct 10W40W wet clutch motorcycle oil? It has special friction modifiers in it for this clutch drag issue.

Nov 19, 2012 | 2003 Suzuki RM 125

1 Answer

I have lot's of spark on my 83 rm 125. I fired it up after sitting for a long time and it kicked right over. I let it run for a few minutes and then shut it off. now it won't fire up again.! Lot's of spark...

Could be low compression (poor piston rings) or plugged air filter.
If it looks like oil on the plug, not fuel, you could have a crank seal issue, as the right side one will **** in transmission oil if it leaks.

Mar 25, 2011 | 2003 Suzuki RM 125

1 Answer

I have an 83 rm 125 it wont start but i have sparks gas and every thing is their but it wont start what shoud i do

get a compression gauge and test the engine compression, since it is old it most likely needs to be bored out and have new piston and rings installed

Mar 29, 2010 | 2003 Suzuki RM 125

1 Answer

2001 rm125 start help

Three things required for combustion: fuel, compression, and spark (at the right time). If your bike has sat for more than a few months, the carburetor is very likely plugged up with gasoline varnish. Take it completely apart and soak in carburetor cleaner, then blow out with compressed air - making sure the jets are clear (hold each one up to a light and look through it). Refill the tank with fresh gasoline and it should run.

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older bikes have high speed and low speed staor coils. check stator

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Fuel injected right? Sounds like you have some fuel injector issues now that the gas has varnished them up. Use stabilizer in the fuel anytime the bike will sit that long without being ridden.

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