When checking oil do you screw it all the way down or do you set on top,I have been doing it with it screwed in,but some of the old bikes use to have you set on top to check level.Do not know which way to do on this bike.

I always checked the oil level with the dipstick not screwed in. Next time you you change the oil make sure you use the 650ml and then use the dipstick and see where it needs to be to show the correct level.

i use a piece of straw as there is no dipstick!!!

Mine is an 84 yam ty250 mono

p.s with the cap screwed out

I can relate to that, no dipstick, so I put a short white paint mark on the outside of case at the level I want. Eventually it becomes habit, oil should be xx distance down on the 'straw' but the paint mark helps until then.

and I do the 175 with diptsick, not screwed in also. That was traditional japanese, I just assumed it was correct.

k