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  1. #1
    ASC is offline
    My Bike(s)
    81 yamaha 550 maxim

    81 yamaha 550 maxim questions

    My son just got a 81 yamaha 550 maxim going. We are wondering what engine oil to use along with air filter oil and fork oil. We have not manual.


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  3. #2
    Super Moderator

    My Bike(s)
    '10 Kaw Vulcan 900 Custom
    Ocala, FL
    Quote Originally Posted by ASC View Post
    We are wondering what engine oil to use along with air filter oil and fork oil.
    The odds against someone here having that exact model are kind of slim.
    The air and oil filters probably are unique to Yamaha.
    The oil needs to be motorcycle type.
    If you have a Yamaha dealer in the area, they probably could answer all of your questions.......and maybe get you a manual too.

  4. #3
    Just Won't Go Away !
    My Bike(s)
    Buford, GA
    The recommended oil depends on what temps you ride in. A 10W-40 is fine for most of the time including winter, 20W-50 is best in the hot weather. A 15W-40 is good year round. Something motorcycle-specific is good, or a diesel oil like Shell Rotella 15W-40 matches motorcycle specs almost exactly and is a popular choice. Car oil is acceptable, but do not use anything that says "conserves energy" or "saves fuel" on the label. If you want to spend your money on expensive synthetics that is your choice.

    K&N, Emgo, Yamaha, Fram, O'Reilly, NAPA, and a dozen other companies make the oil filter. Just look it up in the book or do a Google search. Same goes for the air filter.

    Fork oil depends on what kind of riding you do. Most bikes come from the factory with 10 weight, but 15 weight or even 20 weight will stiffen the suspension a little and slow doen the dampeners if you ride on rough pavement or push it hard in corners.

    Best first step is to buy the Clymer manual- it will tell you everything you need to know, and then some. The owner's manual is virtually worthless if you want to do your own service.
    You MUST obey the pug dog!


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