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8-35
818. When coolant begins to flow out of the bolt
hole, tighten the cylinder head air bleed bolt
to the specified torque.
19. Start the engine and let it idle for ten minutes.
20. Rev the engine five times.
21. Pour additional coolant into the radiator until it is full. 22. Stop the engine and allow it to cool. If the
coolant level has dropped after the engine
has cooled, add sufficient coolant until it
reaches the top of the radiator, and then in-
stall the radiator cap.
23. Start the engine, and then check for coolant leakage.
TIPIf any leakage is found, have a Yamaha dealer
check the cooling system. 24. Install the footboard by installing the boltsand nuts, and then tighten them to the speci-
fied torques.
1. Cylinder head air bleed boltTightening torque:Cylinder head air bleed bolt:10 N·m (1.0 kgf·m, 7.4 lb·ft)
1
UB1662E0.book Page 35 Monday, April 17, 2017 11:39 AM
Page 156 of 172
8-67
8Engine overheating
WARNING
EWB02291Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by
hot fluid and steam blown out under pressure. Always put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap. TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the
recommended coolant as soon as possible. Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer check
and repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
UB1662E0.book Page 67 Monday, April 17, 2017 11:39 AM
Page 161 of 172

10-2
10
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
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:
Yamaha Friction Modified Plus Shaft Drive Oil (Part No.: ACC-SHFTL-PL-32)
Quantity:
0.52 L (0.55 US qt, 0.46 Imp.qt)Differential gear oil:Type:Yamaha Friction Modified Plus Shaft Drive Oil (Part No.: ACC-SHFTL-PL-32) or 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)
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
UB1662E0.book Page 2 Monday, April 17, 2017 11:39 AM
Page 164 of 172

10-5
10
Handlebar-mounted light:Bulb type:Halogen bulb (YFM70KPAJ, YFM70KPHJ, YFM70KPSJ,
YFM70KPXJ)Bulb voltage, wattage × quantity:Headlight:
12 V, 30.0/30.0 W × 2
Handlebar-mounted light: 12 V, 35.0/36.5 W × 1 (YFM70KPAJ, YFM70KPHJ,
YFM70KPSJ, YFM70KPXJ)
Tail/brake light: 12 V, 5.0/21.0 W × 1
Meter lighting: EL (Electroluminescent) (YFM70KPAJ, YFM70KPHJ,
YFM70KPSJ, YFM70KPXJ)
Neutral indicator light: LED
Fuel level warning light:
LED (YFM70KDHJ, YFM70KDXJ)
Reverse indicator light: LED
Coolant temperature warning light: LED
EPS warning light:
LED (YFM70KPAJ, YFM70KPHJ, YFM70KPSJ,
YFM70KPXJ)
Park indicator light:
LED
Four-wheel-drive indicator light: 12 V, 1.7 W × 1 (YFM70KDHJ, YFM70KDXJ)
Engine trouble warning light: LED High-range indicator light:
LED (YFM70KPAJ, YFM70KPHJ, YFM70KPSJ,
YFM70KPXJ)
Low-range indicator light: LED (YFM70KPAJ, YFM70KPHJ, YFM70KPSJ,
YFM70KPXJ)
Differential gear lock indicator light: LED (YFM70KPAJ, YFM70KPHJ, YFM70KPSJ,
YFM70KPXJ)
Fuses:Main fuse:40.0 A
Fuel injection system fuse:
15.0 A
EPS fuse: 40.0 A (YFM70KPAJ, YFM70KPHJ, YFM70KPSJ,
YFM70KPXJ)
Headlight fuse: 10.0 A (YFM70KDHJ, YFM70KDXJ)
15.0 A (YFM70KPAJ, YFM70KPHJ, YFM70KPSJ,
YFM70KPXJ)
Signaling system fuse:
10.0 A
Ignition fuse: 10.0 A
Auxiliary DC jack fuse: 10.0 A
Four-wheel-drive motor fuse:
10.0 A (YFM70KPAJ, YFM70KPHJ, YFM70KPSJ,
YFM70KPXJ)
Radiator fan motor fuse:
20.0 A
UB1662E0.book Page 5 Monday, April 17, 2017 11:39 AM
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12-1
12
INDEX
AAccessories and loading ................................................ 6-5
Accessories, DC jack ...................................................4-24
Air filter element, cleaning ............................................ 8-37
Axle boots .................................................................... 8-48BBattery .......................................................................... 8-53
Brake fluid, changing ...................................................8-44
Brake fluid level, checking ........................................... 8-43
Brake lever free play, checking the front ..................... 8-45
Brake lever, front .......................................................... 4-15
Brake levers, checking and lubricating ........................ 8-49
Brake light switches ..................................................... 8-48
Brake pads and friction plates, checking ..................... 8-42
Brake pedal and rear brake lever ................................. 4-16
Brake pedal, checking and lubricating ........................ 8-50
Brakes .......................................................................... 8-42
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................. 8-49
Carrier, front ................................................................. 4-21
Carrier, rear .................................................................. 4-22
Chassis fasteners ........................................................... 5-6
Cleaning ......................................................................... 9-1
Coolant ................................................................. 5-3, 8-29
Coolant temperature warning light ................................. 4-3DDifferential gear lock, indicators (YFM70KPXJ / YFM70KPAJ / YFM70KPHJ / YFM70KPSJ) ................ 4-5 Differential gear oil ............................................... 5-3, 8-27
Drive lever 2WD/4WD (YFM70K
DXJ / YFM70KDHJ) ... 4-13
Drive select lever .......................................................... 4-16
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 ......................................................... 4-9
Engine trouble warning light .......................................... 4-3
EPS warning light (for EPS model) ................................. 4-4FFinal gear oil ......................................................... 5-3, 8-24
Four-wheel drive icon (YFM70KPXJ / YFM70KPAJ / YFM70KPHJ / YFM70KPSJ) ........................................ 4-5
Four-wheel drive indica tor light (YFM70KDXJ /
YFM70KDHJ) ............................................................... 4-4
Four-wheel drive switch (On-Command 4WD)
(YFM70KPXJ / YFM70KPAJ / YFM70KPHJ /
YFM70KPSJ) ............................................................. 4-11
Fuel ...................................................................... 4-17, 5-3
Fuel level warning light (YFM70KDXJ / YFM70KDHJ) ............................................................... 4-3
Fuel tank cap ............................................................... 4-17
Fuses, replacing ........................................................... 8-57HHandlebar switches ....................................................... 4-8
Headlight beam, adjusting ........................................... 8-62
Headlight bulb, replacing ............................................. 8-59
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