near the oil filler somewhere on the cover it will say how much you need to put in
About 16 to 19 horsepower and it goes about 65 to 70 mph I love them
The kx 80 goes way faster it goes 65 If u have a pro circuit pipe it will go 70-75 The yz 80 goes 50-55 if u have a pro circuit pipe it will go 55-67
I think 700 cc or .7 Liters
10 w 40
the kx is faster
80/85 weight
vokken baie/very much
There should be a Phillips Screw on the side by the kick start remove screw and fill until oil comes out
The fuel to oil ratio should be 32:1
my 87 kx 80 bigwheel has the same problem. it needs a new water pump gaskett
you want to be putting 25ml to every litre of fuel. ie 125ml to 5 litre .