20w50
Use 90 weight gear oil for your crankcase.
The Yamaha NS-10 is a monitor design first introduced in 1978. Studio monitors have been around since the 1920's, when they were used mostly to check for interference of noise and technical problems.
yamalube or Castro syntech weight is up to you yama lube prefer because it is used for higher rpm motors
Cast iron insert is used in a motorcycle crankcase due to its durability. This makes is impossible for thread stripping of the cylinder head.Ê
Cast iroN
Allow pressurized gases to vent from the crankcase.
Yamaha
A PCV valve is used to control the air that enters the crankcase.
You can purchase a Yamaha outboard motor online at www.ebay.com. Also if you have a Yamaha distributorner you,it is possible they carry used motors
10w-30
The Yamaha Raptor 660 is a motorcycle that was made by Yamaha between 2001 and 2006. One can purchase a second-hand Yamaha Raptor 660 at a used Yamaha dealer.
The type of oil being used in a Yamaha 350 series ATV depends on the temperature where the vehicle is kept. For colder areas 5w-40 oil is preferred, but for hotter temperatures 10w-40 is better.