Page 170 of 180

10-2
10
Vibration on handle (EN1032, ISO5008):Will not exceed 2.5 m/s² (YFM70GPAK,
YFM70GPHK_EUR/FRA/GBR, YFM70GPLK,
YFM70GPXK_EUR/FRA/GBR)
Uncertainty of measurement:
0.1 m/s² (YFM70GPAK, YFM70GPHK_EUR/FRA/GBR,
YFM70GPLK, YFM70GPXK_EUR/FRA/GBR)Engine:Combustion cycle:4-stroke
Cooling system: Liquid cooled
Valve train:
SOHC
Number of cylinders: Single cylinder
Displacement: 686 cm³
Bore × stroke:
102.0 × 84.0 mm (4.02 × 3.31 in)
Compression ratio: 10.0 : 1
Starting system: Electric starter
Lubrication system:
Wet sumpEngine oil:Recommended brand:YAMALUBE
SAE viscosity grades:
5W-30, 10W-30, 10W-40, 15W-40, 20W-40, 20W-50 Recommended engine oil grade:
API service SG type or higher, JASO standard MA
Quantity: Oil change: 2.00 L (2.11 US qt, 1.76 Imp.qt)
With oil filter removal: 2.10 L (2.22 US qt, 1.85 Imp.qt)
Final gear oil:Type:Yamaha Friction Modified Plus Shaft Drive Oil (Part No.:
ACC-SHAFT-PL-32) or SAE 80 API GL-4 Hypoid gear oil
Quantity: 0.20 L (0.21 US qt, 0.18 Imp.qt)Differential gear oil:Type:
Yamaha Friction Modified Plus Shaft Drive Oil (Part No.:
ACC-SHAFT-PL-32) or SAE 80 API GL-4 Hypoid gear oil0 10 30 50 70 90 110 130 ˚F
–20 –10 0 10 20 30 40 50 ˚CSAE 5W-30
SAE 10W-30
SAE 10W-40
SAE 15W-40
SAE 20W-40SAE 20W-50
UB4F60E0.book Page 2 Thursday, June 7, 2018 10:42 AM
Page 171 of 180

10-3
10
Quantity:0.21 L (0.23 US qt, 0.19 Imp.qt)Coolant quantity:Radiator (including all routes):
1.99 L (2.10 US qt, 1.75 Imp.qt)
Coolant reservoir (up to the maximum level mark): 0.24 L (0.25 US qt, 0.21 Imp.qt)Air filter:Air filter element:
Wet element
Air filter oil grade: Foam air-filter oilFuel:Recommended fuel:
Regular unleaded gasoline only
Minimum research octane: 91
Fuel tank capacity: 18 L (4.8 US gal, 4.0 Imp.gal)
Fuel reserve amount:
4.0 L (1.06 US gal, 0.88 Imp.gal)Throttle body:ID mark:B4F100Spark plug (s):Manufacturer/model:NGK/CPR7EA-9
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)
Drivetrain:Primary reduction ratio:1.000
Secondary reduction ratio:
10.142 (41/21 x 17/12 x 20/15 x 33/12)
Final drive: Shaft
Clutch type: Wet, centrifugal, shoe
Transmission type:
CVT automatic with reverse
Gear ratio: Transmission ratio:
2.380–0.700 : 1
Reverse gear: 2.000 (23/14 x 28/23)
Low range: 1.938 (31/16)
High range:
1.148 (31/27)Front tire:Size:AT26 x 8-12 (YFM70GPAK, YFM70GPHK, YFM70GPXK)
AT27 x 10-14 (YFM70GPLK)
Manufacturer/model: MAXXIS/MU01 (YFM70GPLK)
MAXXIS/MU05Y (YFM70GPAK, YFM70GPHK,
YFM70GPXK)
UB4F60E0.book Page 3 Wednesday, April 25, 2018 11:52 AM
Page 177 of 180

12-1
12
INDEX
AAccessories and loading ................................................ 6-5
Accessories, DC jack ................................................... 4-27
Air filter element, cleaning ........................................... 8-37
Axle boots .................................................................... 8-48BBattery ......................................................................... 8-52
Battery voltage warning light ......................................... 4-3
Brake fluid, changing ................................................... 8-45
Brake fluid level, checking ........................................... 8-44
Brake lever, front ......................................................... 4-16
Brake levers, checking and lubricating ........................ 8-49
Brake pads, checking the front and rear ..................... 8-43
Brake pedal and rear brake lever ................................. 4-16
Brake pedal, checking and lubricating ........................ 8-50
Brake pedal free play, adjusting .................................. 8-47
Brakes .......................................................................... 8-42
Brakes, front and rear .................................................... 5-3
Brake/tail light .............................................................. 8-61CCables, checking and lubricating ................................ 8-49
Carrier, front ................................................................. 4-25
Carrier, rear .................................................................. 4-25
Chassis fasteners .......................................................... 5-8
Cleaning ......................................................................... 9-1
Coolant .................................................................5-3, 8-29
Coolant temperature warning light ................................ 4-3DDifferential gear oil ................................................5-3, 8-27Drive select lever ......................................................... 4-17
Drive select lever and driving in reverse ........................ 6-2
EEngine break-in .............................................................. 6-4
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge .................................. 8-20
Engine stop switch ...................................................... 4-11
Engine trouble warning light .......................................... 4-3
EPS warning light .......................................................... 4-4FFinal gear oil ......................................................... 5-3, 8-25
Four-wheel drive/differential gear lock icon .................. 4-4
Four-wheel drive switch (On-Command 4WD) ............ 4-12
Front and rear brake lever free play, checking ............ 8-46
Fuel ....................................................................... 4-19, 5-3
Fuel tank cap ............................................................... 4-18
Fuses, replacing .......................................................... 8-56HHandlebar switches ..................................................... 4-10
Headlight beam, adjusting ........................................... 8-60
Headlight bulb, replacing ............................................. 8-58
High beam indicator light ............................................... 4-2
High-range indicator light .............................................. 4-2
Horn switch .................................................................. 4-11IIdentification numbers ................................................. 11-1
Indicator lights and warning lights ................................. 4-2
Instruments, lights and switches ................................... 5-8
UB4F60E0.book Page 1 Wednesday, April 25, 2018 11:52 AM