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7-23
7WHAT TO DO...
●If your ATV doesn’t turn when you want it to:
Bring the ATV to a stop and practice the turning
maneuvers again. Be sure you are putting your
weight on the footboard to the outside of the
turn. Position your weight over the front wheels
for better control. (See page 7-12.)●If your ATV begins to tip while turning:
Lean more into the turn to regain balance. If nec-
essary, gradually let off the throttle and/or steer
to the outside of the turn. (See page 7-12.)●If your ATV starts to slide sideways:
Steer in the direction of the slide if you have the
room. Applying the brakes or accelerating is not
recommended until you have corrected the
slide. (See page 7-21.)●If your ATV can’t make it up a hill you are trying
to climb:
Turn the ATV around if you still have forward
speed. If not, stop, dismount on the uphill side of
the ATV and physically turn the ATV around. If
the ATV starts to slip backwards, DO NOT USE
THE REAR BRAKE IF THE ATV IS IN “2WD” –
the ATV may tip over on top of you. Dismount
the ATV on the uphill side. (See page 7-13.)
●If your ATV is traversing a sloping surface:
Be sure to ride with your weight positioned to-
wards the uphill side of the ATV to maintain
proper balance. If the ATV starts to tip, steer
down the hill (if there are no obstacles in your
way) to regain balance. If you discover that the
ATV is going to tip over, dismount on the uphill
side. (See page 7-17.)●If your ATV encounters shallow water:
Ride slowly and carefully through slow moving
water, watching for obstacles. Be sure to let wa-
ter drain from the ATV and CHECK YOUR
BRAKES FOR PROPER OPERATION when
you come out of the water. Do not continue to
ride your ATV until you have regained adequate
braking ability. (See page 7-18.)
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10-1
10
EBU25961
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:With oil and fuel:
294.0 kg (648 lb)Noise and vibration level:Noise level (77/311/EEC):YFM550DE 79.0 dB(A)@2950 r/min
YFM550PE 79.0 dB(A)@2950 r/min (EUR)(FRA)(GBR)
YFM550PHE 79.0 dB(A)@2950 r/min
YFM550PLE 79.0 dB(A)@2950 r/min Vibration on seat (EN1032, ISO5008):
YFM550DE Will not exceed 0.5 m/s²
YFM550PE Will not exceed 0.5 m/s² (EUR)(FRA)(GBR)
YFM550PHE Will not exceed 0.5 m/s²
YFM550PLE Will not exceed 0.5 m/s²
Vibration on handlebar (EN1032, ISO5008): YFM550DE Will not exceed 2.5 m/s²
YFM550PE Will not exceed 2.5 m/s² (EUR)(FRA)(GBR)
YFM550PHE Will not exceed 2.5 m/s²
YFM550PLE 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: 9.30 : 1
Starting system: Electric starter
Lubrication system:
Wet sumpEngine oil:Recommended brand:YAMALUBE
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Page 166 of 174

10-3
10
Spark plug (s):Manufacturer/model:NGK/LMAR6A-9
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:Wet, centrifugal automaticTransmission:Primary reduction system:V-belt
Secondary reduction system: Shaft drive
Secondary reduction ratio:
41/21 × 24/18 × 33/9 (9.544)
Transmission type: V-belt automatic
Operation: Left hand operation
Reverse gear:
23/14 × 28/23 (2.000)
Low range: 31/16 (1.938)
High range: 31/27 (1.148)Chassis:Frame type:Steel tube frame
Caster angle: 5.0 ° Trail:
26.0 mm (1.02 in)
Front tire:Type:
Tubeless
Size: AT25 x 8-12
Manufacturer/model: YFM550DE MAXXIS/MU19
YFM550PE CHENG SHIN/C828 (AUS)(NZL)
YFM550PE MAXXIS/MU19 (EUR)(FRA)(GBR)
YFM550PHE MAXXIS/MU19
YFM550PLE MAXXIS/MU19Rear tire:Type:
Tubeless
Size: AT25 x 10-12
Manufacturer/model: YFM550DE MAXXIS/MU20
YFM550PE CHENG SHIN/C828 (AUS)(NZL)
YFM550PE MAXXIS/MU20 (EUR)(FRA)(GBR)
YFM550PHE MAXXIS/MU20
YFM550PLE MAXXIS/MU20Loading:Maximum loading limit:
220.0 kg (485 lb)
(Total weight of rider, cargo, accessories, and tongue)
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