8-22
85. Insert the dipstick completely into the oil filler
hole, and then remove it again to check the oil
level.
TIPThe engine oil should be between the minimum
and maximum level marks. 6. If the engine oil is at or below the minimumlevel mark, add sufficient oil of the recom-
mended type to raise it to the correct level.
NOTICE: Be sure the engine oil is at the
correct level, otherwise engine damage
may result.
[ECB00852]
7. Insert the dipstick completely into the oil filler hole.
8. Install the access cover by turning it clock- wise.
To change the engine oil (with or without oil fil-
ter cartridge replacement) 1. Place the ATV on a level surface.
2. Remove the access cover by turning it coun- terclockwise.
3. Place an oil pan under the engine to collect the used oil.
4. Remove the dipstick, and then remove the engine oil drain bolt and its gasket to drain the
oil from the crankcase.
1. Maximum level mark
2. Minimum level markUB1660E0.book Page 22 Thursday, February 26, 2015 4:01 PM
8-26
82. Remove the final gear oil level check bolt and
its gasket, and then check the oil level in the
final gear case. The oil level should be at the
brim of the check hole.
3. If the oil is below the brim of the check hole, remove the final gear oil filler bolt and its gas-
ket, and then add sufficient oil of the recom-
mended type to raise it to the correct level. 4. Check the gaskets for damage, and replace
them if necessary.
5. Install the oil level check bolt, the oil filler bolt and their gasket, and then tighten the bolts to
the specified torques.
1. Final gear oil
2. Gasket
3. Final gear oil level check bolt
4. Correct oil level
1
243
1. Final gear oil filler bolt
2. GasketTightening torques:Final gear oil level check bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Final gear oil filler bolt: 23 Nm (2.3 m·kgf, 17 ft·lbf)
1
2
UB1660E0.book Page 26 Thursday, February 26, 2015 4:01 PM
8-28
86. Check the oil level check bolt gasket and the
oil filler bolt gasket for damage, and replace
them if necessary.
7. Install the oil level check bolt, the oil filler bolt and their gasket, and then tighten the bolts to
the specified torques.
8. Check the final gear case for oil leakage. If oil is leaking, check for the cause.
EBU23427Differential gear oilThe differential gear case must be checked for oil
leakage before each ride. If any leakage is found,
have a Yamaha dealer check and repair the ATV.
In addition, the differential gear oil level must be
checked and the oil changed as follows at the in-
tervals specified in the periodic maintenance and
lubrication chart. To check the differential gear oil level
1. Place the ATV on a level surface.
2. Remove the differential gear oil filler bolt and its gasket, and then check the oil level in the
differential gear case. The oil level should be
at the brim of the filler hole.
3. If the oil is below the brim of the filler hole, add sufficient oil of the recommended type to
raise it to the correct level.
4. Check the gasket for damage, and replace it if necessary.
Tightening torques:
Final gear oil level check bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Final gear oil filler bolt: 23 Nm (2.3 m·kgf, 17 ft·lbf)
1. Differential gear oil filler bolt
2. Gasket
3. Differential gear oil
4. Correct oil level
1
2
3
4
UB1660E0.book Page 28 Thursday, February 26, 2015 4:01 PM
8-45
8
Insufficient brake fluid may allow air to enter
the brake system, reducing braking perfor-
mance.
Clean the filler cap before removing. Use
only DOT 4 brake fluid from a sealed contain-
er.
Use only the specified brake fluid; otherwise,
the rubber seals may deteriorate, causing
leakage.
Refill with the same type of brake fluid. Add-
ing a brake fluid other than DOT 4 may result
in a harmful chemical reaction.
Be careful that water does not enter the
brake fluid reservoir when refilling. Water will
significantly lower the boiling point of the flu-
id and may result in vapor lock.
NOTICEECB01161Brake fluid may damage painted surfaces or
plastic parts. Always clean up spilled fluid im-
mediately. As the brake pads wear, it is normal for the brake
fluid level to gradually go down. A low brake fluid
level may indicate worn brake pads and/or brake
system leakage; therefore, be sure to check the brake pads for wear and the brake system for
leakage. If the brake fluid level goes down sud-
denly, have a Yamaha dealer check the cause be-
fore further riding.
EBU24283Changing the brake fluidHave a Yamaha dealer change the brake fluid at
the intervals specified in the periodic maintenance
and lubrication chart. In addition, have the oil seals
of the brake master cylinder and calipers as well
as the brake hoses replaced at the intervals listed
below or whenever they are damaged or leaking.
Oil seals: Replace every two years.
Brake hoses: Replace every four years.EBU24395Checking the front brake lever free
playThe brake lever free play must be checked at the
intervals specified in the periodic maintenance
and lubrication chart. The brake lever should have
no free play as shown. If there is free play, have a
Yamaha dealer check the brake system.
UB1660E0.book Page 45 Thursday, February 26, 2015 4:01 PM
10-1
10
EBU25962
SPECIFICATIONS
Dimensions:Overall length:2070 mm (81.5 in)
Overall width: 1180 mm (46.5 in)
Overall height:
1240 mm (48.8 in)
Seat height: 860 mm (33.9 in)
Wheelbase: 1250 mm (49.2 in)
Ground clearance:
275 mm (10.8 in)
Minimum turning radius: 3200 mm (126 in)Weight:Curb weight:
300.0 kg (661 lb) (YFM70KDHG, YFM70KDXG)
307.0 kg (677 lb) (YFM70KPHG, YFM70KPXG)
312.0 kg (688 lb) (YFM70KPSG)Noise and vibration level:Noise level (77/311/EEC):80.0 dB(A) at 3125 r/min (EUR/FRA/GBR)
Uncertainty of measurement: 3.0 dB(A) (EUR/FRA/GBR)
Vibration on seat (EN1032, ISO5008): Will not exceed 0.5 m/s² (EUR/FRA/GBR) Uncertainty of measurement:
0.0 m/s² (YFM70KPHG, YFM70KPSG_EUR/FRA/GBR,
YFM70KPXG_EUR/FRA/GBR)
0.1 m/s² (YFM70KDHG, YFM70KDXG_EUR/FRA/GBR)
Vibration on handle (EN1032, ISO5008): Will not exceed 2.5 m/s² (EUR/FRA/GBR)
Uncertainty of measurement:
0.3 m/s² (EUR/FRA/GBR)
Engine:Engine type:Liquid cooled 4-stroke, DOHC
Cylinder arrangement:
Single cylinder
Displacement: 708 cm³
Bore × stroke:
103.0 × 85.0 mm (4.06 × 3.35 in)
Compression ratio:
10.1 : 1
Starting system: Electric starter
Lubrication system: Wet sumpEngine oil:Recommended brand:YAMALUBE
UB1660E0.book Page 1 Thursday, February 26, 2015 4:01 PM
10-2
10
Type:SAE 0W-30, 10W-30, 10W-40, 15W-40, 20W-40 or 20W-
50
Recommended engine oil grade: API service SG type or higher, JASO standard MA
Engine oil quantity: Without oil filter cartridge replacement:2.00 L (2.11 US qt, 1.76 Imp.qt)
With oil filter cartridge replacement: 2.10 L (2.22 US qt, 1.85 Imp.qt)Final gear oil:Type:Mobilfluid 424
Quantity: 0.52 L (0.55 US qt, 0.46 Imp.qt)Differential gear oil:Type:SAE 80 API GL-4 Hypoid gear oil Quantity:
0.22 L (0.23 US qt, 0.19 Imp.qt)
Coolant quantity:Coolant reservoir (up to the maximum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes): 1.76 L (1.86 US qt, 1.55 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:Regular unleaded gasoline only
Fuel tank capacity:
18.0 L (4.75 US gal, 3.96 Imp.gal)
Fuel reserve amount: 4.0 L (1.06 US gal, 0.88 Imp.gal)Fuel injection:Throttle body:
ID mark:B161 00Spark plug (s):Manufacturer/model:NGK/CPR7EA-9
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:Wet, centrifugal automatic
0 10 30 50 70 90 110 130 F
–20 –10 0 10 20 30 40 50 CSAE 0W-30
SAE 10W-30
SAE 10W-40
SAE 15W-40
SAE 20W-40SAE 20W-50
UB1660E0.book Page 2 Thursday, February 26, 2015 4:01 PM
10-4
10
Rear wheel:Wheel type:Cast wheel (YFM70KPSG)
Panel wheel (YFM70KDHG, YFM70KDXG,
YFM70KPHG, YFM70KPXG)
Rim size: 12 x 7.5ATFront brake:Type:
Disc brake
Operation: Right hand operation
Specified brake fluid: DOT 4Rear brake:Type:Wet multiple disc brake
Operation: Left hand and right foot operationFront suspension:Type:Double wishbone
Spring/shock absorber type: Coil spring/oil damper
Wheel travel:
193 mm (7.6 in)Rear suspension:Type:Double wishbone
Spring/shock absorber type:
Coil spring/oil damper Wheel travel:
232 mm (9.1 in)
Electrical system:Ignition system:
TCI
Charging system: AC magnetoBattery:Model:
YTX20L-BS
Voltage, capacity: 12 V, 18.0 AhHeadlight:Bulb type:
Krypton bulb
High-mounted headlight bulb type: Halogen bulb (YFM70KPHG, YFM70KPSG,
YFM70KPXG)Bulb voltage, wattage × quantity:Headlight:
12 V, 30.0/30.0 W × 2
High-mounted headlight:
12 V, 35.0/36.5 W × 1 (YFM70KPHG, YFM70KPSG,
YFM70KPXG)
Tail/brake light:
12 V, 5.0/21.0 W × 1
Meter lighting: EL (Electroluminescent) (YFM70KPHG, YFM70KPSG,
YFM70KPXG)
Neutral indicator light: LED
UB1660E0.book Page 4 Thursday, February 26, 2015 4:01 PM