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8
EBU25741TroubleshootingAlthough Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the
fuel, compression, or ignition systems, for exam-
ple, can cause poor starting and loss of power.
The following troubleshooting charts represent
quick and easy procedures for checking these vi-
tal systems yourself. However, should your ATV
require any repair, take it to a Yamaha dealer,
whose skilled technicians have the necessary
tools, experience, and know-how to service the
ATV properly.
Use only genuine Yamaha replacement parts. Im-
itation parts may look like Yamaha parts, but they
are often inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWB02281Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
lot lights from water heaters or furnaces. U2LB61E0.book Page 66 Friday, February 21, 2014 3:03 PM
10-1
10
EBU25962
SPECIFICATIONS
Dimensions:Overall length:2065 mm (81.3 in)
Overall width: 1180 mm (46.5 in)
Overall height:
1240 mm (48.8 in)
Seat height: 905 mm (35.6 in)
Wheelbase: 1250 mm (49.2 in)
Ground clearance:
275 mm (10.8 in)
Minimum turning radius: 3200 mm (126 in)Weight:Curb weight:
294.0 kg (648 lb)Noise and vibration level:Noise level (77/311/EEC):YFM550DF 79.0 dB(A)@2950 r/min (EUR)(FRA)(GBR)
YFM550PF 79.0 dB(A)@2950 r/min (EUR)(FRA)(GBR)
YFM550PHF 79.0 dB(A)@2950 r/min
Vibration on seat (EN1032, ISO5008): YFM550DF Will not exceed 0.5 m/s² (EUR)(FRA)(GBR)
YFM550PF Will not exceed 0.5 m/s² (EUR)(FRA)(GBR)
YFM550PHF Will not exceed 0.5 m/s² Vibration on handle (EN1032, ISO5008):
YFM550DF Will not exceed 2.5 m/s² (EUR)(FRA)(GBR)
YFM550PF Will not exceed 2.5 m/s² (EUR)(FRA)(GBR)
YFM550PHF Will not exceed 2.5 m/s²
Engine:Engine type:Liquid cooled 4-stroke, SOHC
Cylinder arrangement: Single cylinder
Displacement: 558 cm³
Bore × stroke:
92.0 × 84.0 mm (3.62 × 3.31 in)
Compression ratio: 9.3 : 1
Starting system: Electric starter
Lubrication system:
Wet sumpEngine oil:Recommended brand:YAMALUBE
U2LB61E0.book Page 1 Friday, February 21, 2014 3:03 PM
