Yamaha FZ 25 2021 - Engine Maintenance Specifications

2-2
SPEC
MAINTENANCE SPECIFICATION (ENGINE)
Engine
Combustion cycle 4-stroke
Cooling system Air cooled
Valve train SOHC
Displacement 249 cm³
Number of cylinders Single cylinder
Bore  stroke 74.0  58.0 mm (2.91  2.28 in)
Compression ratio 9.8 : 1
Compression pressure 1044-1344 kPa/700 r/min (10.4–13.4
kgf/cm
2
/700 r/min, 148.5-191.2 psi/700 r/min)
Starting system Electric starter
Fuel
Recommended fuel Regular unleaded gasoline (E10 acceptable)
Fuel tank capacity 14 L (3.7 US gal, 3.1 Imp.gal)
Fuel reserve amount 2.1 L (0.55 US gal, 0.46 Imp.gal)
Engine oil
Recommended brand YAMALUBE
SAE viscosity grades 10W-40
Recommended engine oil
API service SL type, JASO standard MA
Lubrication system Wet sump
Engine oil quantity
Oil change 1.35 L (1.43 US qt, 1.19 Imp.qt)
With oil filter removal 1.45 L (1.53 US qt, 1.28 Imp.qt)
Quantity (disassembled) 1.55 L (1.64 US qt, 1.36 Imp.qt)
Oil filter
Oil filter type
Cartridge
Spark plug(s)
Manufacturer/model NGK/DR8EA
Spark plug gap 0.6–0.7 mm (0.024–0.028 in)
Cylinder head
Warpage limit 0.05 mm (0.0020 in)
MAINTENANCE SPECIFICATION (ENGINE)
B9X-F8197-E0.book Page 2 Thursday, July 16, 2020 2:28 PM