Where does oil go on this bike - 2006 Gilera Runner VX 125

Most are about 3.5 quarts with new filter. Best way to handle this is warm the bike for a bit then drain oil, put new filter on, then add 3 quarts of oil( put the drain plug back before adding oil), Start bike for a few seconds then shut off. Get on right side of bike and pull it upright , look at the little glass window located on the lower right side of bike. Add oil until the oil is in the center of glass window.....Important, make sure bike is upright to get a accurate reading.

Good luck
Semper Fi,
Z

Get car oil out - friction reducing properties ruin wet clutches - put bike oil in
Make sure cable is adjusted properly
Plates may get stuck together after time unused - see my tip for quickly releasing seized clutches
Ride Safe
Bike-Doc

Oil light came on bike cut off when I pulled in clutch I checked oil it was full started bike drove down road got were didn't want shift rite oil light still on start sqelling from bottom part of motor so when I pulled cluht in bike cut off

See It Depends from bike to bike there are so many of the yamaha motorcyles available in the market well the problem does not specify the model of the bike still i will try to help you out see it acctually depends upon the capacity of the engine the {cc} more the capacity bigger is the oil tank ,bigger the fuel tank.. FOR A 100cc BIKE OIL TANK IS ABOUT 970ml 1l APPROX and the FUEL TANK IS ABOUT 14 litres FOR A 200-350cc BIKE OIL TANK IS ABOUT 1.2l AND FUEL TANK IS 20LITRES FOR A BIKE ABOVE 350cc OIL TANK IS 1.5l AND FUEL TANK AGAIN RANGES ON THE CAPACITY OF THE ENGINE IN PROPORTION TO THE OIL TANK,FUEL TANK
hope this solves some of you problem ..

Check oil when bike is cold...... here is the best procedure.

Ride bike (and enjoy)
Park bike on side stand, let sit for at least 10 minutes or overnight. (lets oil drain out of cooler into sump)
Put bike on center stand. Bike should be on level ground
Check oil level in window on lower LHS of engine.
Level should be anywhere inside of red circle in sight glass.
DO NOT OVERFILL let level get down to lower edge of red circle before adding oil

Good Luck!

cheak to see if the oil line has dirt in it

Stop riding the bike until you change the gearbox oil and oil filter. Yes, the oil is probably the problem. I am somewhat surprised that the pistons haven't seized yet. On the bottom or lower side of the gear box there will be an oil drain plug. Drain the oil and put in new oil. The oil fill hole is probably on the right side cover near the rear of the casing. The plug will probably have a dip stick to measure the oil level. Put in 10w40 motor oil. Ride the bike for a few hours then drain the oil to help flush out the dirt and grit built up in the gearbox. Put in fresh oil and a new oil filter if the bike has a filter.

Your bike is 18 years old and parts can be difficult to find. Your bike probably has an oil filter. If so, it desperately needs a new one. Google " vintage suzuki motorcycle parts " . I can not find a free service manual online. You may be able to buy one at www.repairmanuals.com

ENDURO OR DIRT BIKES USUALLY DONT HAVE FILTER,JUST CHANGE OIL

Hi there , great bike  by the way.... Okay so you just bought a nice bike, the best thing to to is to assume that it hasn't been done, One thing is for sure the bike shop 9 times out of 10 will not spend much on a trade in and people that sell their bikes usually don't service them before they sell them which leaves you in limbo land so, if the bike is running well then great buy your self a new oil filter and oil , (check owners manual or ask at the bike shop when you buy the oil but if it was me i would used the Motul full synthetic considering the amount of miles the bike is only just run in so she will be a bit tight.
To check the oil it is easy .
First kick her over and let her run until she's at operating temperature, (don't rev it hard or any thing let it do it by itself, once this is achieved , stop the bike , put the bike on its dual stand (if fitted) if your bike has not got one then hold the bike level , now on the motor there is a black twist grip plug , with finger grab face on it , unwind it out and you will see a dip stick , on the dip stick there is two markings , one is the low level the other is the fill level , anywhere below  half way should be topped up no higher than the top mark on the stick, remember the bike must be level,
To change the oil and the oil filter its just a matter of placing the bike on its main stand ( again if your bike only came with the side stand it means that the drain plug will be located on the left side of the bottom of the motor and is usually easy to find) and in most bikes they design the fairing around it so you don't have to remove any covers , and same for the oil filter ,
I hope this info helps you , if you need a more in depth look at how to let me know 
Regards
Roadrunning1 

Also check that bike is properly positioned. Is bike on level ground? With most bikes oil is checked on center stand or holding bike upright not on side stand. Also check manual some bikes say to check hot very few with cold motor. (many bikes with oil tanks will fill up crankcase and appear empty if checked cold especially after sitting for a long time) Most will say to wait a period of time after turning off motor (usually between 10 and 30 min.) but some say to check immediately after turning off. ,