yes if it is 4stroke witch i think ttr 90 is! use good type of gas, you have separate place for engine oil, but with 2stroke engines you have to mix gas and oil together.
2.16 oz my ttr 125 takes 900mls to 1 litre
yes, i think it will even fit on a ttr 90.
I believe it's 20W 40, if this helps.
a ttr 90 goes about 35 to 40mph.
The precise type of oil that a Yamaha TTR 90 dirt bike should use can depend on the year the bike had been manufactured ad should be listed in the manual for the bike. For a 2002 Yamaha TTR 90 bike, the recommended oil type is 10W-30 (when 10 degrees Fahrenheit or above) and 20W-40 (when 40 degrees Fahrenheit or above).
10w 40, I use vavoline for all of my bikes
when the ttr 90 is flipped over oil pours into the airbox.
it would have to be the Yamaha ttr 90
It will go about 20-30 MPH.
I am unable to locate one
The vin shows a 2000 model year machine