Yamaha MZ175 Owner's Manual page 24

Recommended fuel:
Unleaded gasoline
Fuel tank capacity:
Total:
MZ175 4.0 L (1.06 US gal, 0.88 Imp gal)
MZ200 4.0 L (1.06 US gal, 0.88 Imp gal)
MZ250 5.5 L (1.45 US gal, 1.21 Imp gal)
MZ300 5.5 L (1.45 US gal, 1.21 Imp gal)
MZ360 6.1 L (1.61 US gal, 1.34 Imp gal)
Your Yamaha engine has been designed to use regu-
lar unleaded gasoline with a pump octane number ((R
+ M)/2) of 86 or higher, or research octane number of
91 or higher.
NOTICE
Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts.
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