Yamalube motor oil.
The best type of Yamaha motorcycle is definitely Yamaha FJR.
BR9EG NGK(resistance type) is what the owners manual says to use
The Yamaha YZF R1 motorcycle is a sports bike class motorcycle. The Yamaha YZF R1, like other Yamaha sports bikes, are available from authorized Yamaha dealers.
1982 yamaha xt 250
12V 10AH is the battery of Yamaha v star 650
Yamalube motor oil
Type your answer here... Under the seat
Use 10w40 4-stroke motorcycle oil. DO NOT use any type of automotive oil; motorcycle oil is needed because of the wet clutch.
Yes, it depends on what type of shaft it is to determine how your going to tackle the job.
If the woman has a small frame personally i would suggest a Yamaha ttr110
Sign up at myyamaha.com and download the service data sheet for your bike which lists the oil type and capacity. https://www.yamaha-motor.com/sport/myyamaha/login/L3Nwb3J0L215eWFtYWhhL2hvbWUuYXNweA==/starthere.
10w-30 engine oil preferably motorcycle type oil for wet clutch.