2009 YAMAHA YFM50R oil type

8-10
1
2
3
4
5
6
78
9
10
11

To check the engine oil level
1. Place the ATV on a level surface.
2. Check the engine oil level on a cold engine.
TIP

If the engine was started before checking the oil
level, be sure to warm up the engine sufficiently,
and then wait at least ten minutes until the oil set-
tles for an accurate reading.
3. Remove the engine oil filler cap, and then
wipe the dipstick off with a clean rag.
4. Insert the dipstick into the filler hole (withoutscrewing it in), and then remove it again to
check the oil level.TIP
The engine oil should be between the minimum
and maximum level marks.
5. If the engine oil is at or below the minimum
level mark, add sufficient oil of the recom-
mended type to raise it to the correct level.
6. Insert the dipstick into the oil filler hole, and
then tighten the engine oil filler cap.
1. Engine oil filler cap
2. Dipstick
12

1. Maximum level mark
2. Minimum level mark
1
2

8-12
1
2
3
4
5
6
78
9
10
11

minutes while checking it for oil leakage. If oil
is leaking, immediately turn the engine off and
check for the cause.
9. Turn the engine off, wait at least ten minutes,
and then check the oil level and correct it if
necessary.
EBU23404
Final gear oil
The final gear case must be checked for oil leak-
age before each ride. If any leakage is found, have
a Yamaha dealer check and repair the ATV. In ad-
dition, the final gear oil level must be checked and
the oil changed as follows at the intervals specified
in the periodic maintenance and lubrication chart.
To check the final gear oil level
1. Place the ATV on a level surface.
TIP

The final gear oil level must be checked on a cold
engine.
2. Remove the final gear oil filler cap, wipe the
dipstick off with a clean rag, insert it back into
the oil filler hole (without screwing it in), and
then remove it again to check the oil level.
TIP

The final gear oil should be between the minimum
and maximum level marks.
3. If the oil is at or below the minimum level mark,
add sufficient oil of the recommended type to
raise it to the correct level.
4. Insert the dipstick into the oil filler hole, and
then tighten the oil filler cap.
1. Final gear oil filler cap
2. Dipstick
3. Maximum level mark
4. Minimum level mark
2 3
4
1

10-1
1
2
3
4
5
6
7
8
910
11

EBU25960
SPECIFICATIONS
EBU2597B
Dimensions:
Overall length:
1537 mm (60.5 in)
Overall width:
825 mm (32.5 in)
Overall height:
915 mm (36.0 in)
Seat height:
618 mm (24.3 in)
Wheelbase:
1030 mm (40.6 in)
Ground clearance:
75 mm (3.0 in)
Minimum turning radius:
2300 mm (91 in)
Weight:
With oil and fuel:
115.0 kg (254 lb)
Noise and vibration level:
Noise level (77/311/EEC):
76.7 dB(A) (EUR)
Vibration on seat (EN1032, ISO5008):
Will not exceed 0.5 m/s
2

(EUR)
Vibration on handlebar (EN1032, ISO5008):
Will not exceed 2.5 m/s
2

(EUR)
Engine:
Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
49.0 cm
3

Bore
×
stroke:
39.0
×
41.4 mm (1.54
×
1.63 in)
Compression ratio:
10.30 :1
Starting system:
Electric starter
Lubrication system:
Wet sump

Engine oil:
Type:
SAE 5W-30 or SAE 10W-30 or SAE 10W-40 or SAE
15W-40 or SAE 20W-40 or SAE 20W-50

10-2
1
2
3
4
5
6
7
8
910
11

Recommended engine oil grade:
API service SG type or higher, JASO standard MA
Engine oil quantity:
Periodic oil change:
0.80 L (0.85 US qt, 0.70 Imp.qt)
Final gear oil:
Type:
SAE 80 API GL-4 Hypoid gear oil
Quantity:
0.12 L (0.13 US qt, 0.11 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
Regular unleaded gasoline only (EUR)
Unleaded gasoline only (AUS)(NZL)
Fuel tank capacity:
6.8 L (1.80 US gal, 1.50 Imp.gal)
Fuel reserve amount:
0.9 L (0.24 US gal, 0.20 Imp.gal)
Carburetor:
Manufacturer:
MIKUNI
Type
×
quantity:
VM16SH x 1
Spark plug (s):
Manufacturer/model:
NGK/CR7HSA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Clutch:
Clutch type:
Wet, multiple-disc automatic
Transmission:
Primary reduction system:
Spur gear
Primary reduction ratio:
65/20 (3.250)
Secondary reduction system:
Shaft drive
-20 -10 0
1020 304050 ˚C
SAE 15W-40
SAE 20W-40SAE 20W-50
SAE 10W-40
SAE 5W-30
SAE 10W-30

10-4
1
2
3
4
5
6
7
8
910
11
Rear brake:

Type:
Drum brake
Operation:
Left hand operation
Front suspension:
Type:
Leading arm
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
57 mm (2.3 in)
Rear suspension:
Type:
Swingarm
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
56 mm (2.2 in)
Electrical system:
Ignition system:
CDI
Charging system:
AC magneto
Battery:
Model:
12N7D-3B
Voltage, capacity:
12 V, 7.0 Ah
Bulb voltage, wattage
×× × ×
quantity:
Neutral indicator light:
12 V, 1.7 W
×
1
Fuses:
Main fuse:
5.0 A