Yamaha Ultramatic GRIZZLY 660 Owner's Manual - page 36

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CAUTION:

ECB00070

Use only unleaded gasoline. The use of leaded

gasoline will cause severe damage to internal

engine parts, such as the valves and piston

rings, as well as to the exhaust system.

Your Yamaha engine has been designed to use

regular unleaded gasoline with a pump octane

number [(R+M)/2] of 86 or higher, or a research oc-

tane number of 91 or higher. If knocking or pinging

occurs, use a different brand of gasoline or premi-

um unleaded fuel. Unleaded fuel will give you long-

er spark plug life and reduced maintenance cost.

Gasohol

There are two types of gasohol: gasohol contain-

ing ethanol and that containing methanol. Gasohol

containing ethanol can be used if the ethanol con-

tent does not exceed 10%. Gasohol containing

methanol is not recommended by Yamaha be-

cause it can cause damage to the fuel system or

ATV performance problems.

WARNING

EWB00270

1. Fuel level

2. Fuel tank filler tube

Recommended fuel:

UNLEADED GASOLINE ONLY

Fuel tank capacity:

20.0 L (5.28 US gal) (4.40 Imp.gal)

Fuel reserve amount:

3.5 L (0.92 US gal) (0.77 Imp.gal)

POTENTIAL HAZARD

Improper care when refueling.

U2C612E0.book  Page 17  Wednesday, March 8, 2006  10:15 AM