2017 YAMAHA VIKING check engine

8-16
8
TIPBe sure to wipe off spilled oil on any parts af-
ter the engine and exhaust system have
cooled down. NOTICEECB00301In order to prevent clutch slippage (since
the engine oil also lubricates the clutch),
do not mix any chemical additives. Do
not use oils with a diesel specification of
“CD” or oils of a higher quality than
specified. In addition, do not use oils la-
beled “ENERGY CONSERVING II” or
higher. 
Make sure that no foreign material en-
ters the crankcase.
12. Start the engine, and then let it idle for
several minutes while checking it for oil
leakage. If oil is leaking, immediately turn
the engine off and check for the cause.
13. Turn the engine off, wait at least 10 minu-
tes, and then check the oil level and cor-
rect it if necessary.
14. Install the right rear panel by installing the
bolts and the quick fastener screws.
15. Lower the cargo bed.EBU36050Final gear oilCheck the oil level and change the final gear
oil at the intervals specified in the general
maintenance and lubrication chart.
Checking the final gear oil level 1. Park the vehicle on a level surface.
Recommended engine oil: See page 10-1.
Oil quantity: Without oil filter cartridge replacement:2.20 L (2.33 US qt, 1.94 Imp.qt)
With oil filter cartridge replacement: 2.30 L (2.43 US qt, 2.02 Imp.qt)
UB427BE0.book Page 16 Friday, February 5, 2016 2:14 PM

8-21
8
6. Check the oil filler bolt gasket for dam-age, and replace it if necessary.
7. Install the differential gear oil filler bolt and its gasket, and then tighten the bolt
to the specified torque.
8. Check for oil leakage. If oil leakage is found, check for the cause.EBU32990CoolantThe coolant level should be checked before
each ride.
Checking the coolant level
1. Park the vehicle on a level surface.
2. Check the coolant level in the coolant reservoir when the engine is cold as the
coolant level varies with engine tempera-
ture.
TIPThe coolant should be between the minimum
and maximum level marks. 3. If the coolant is at or below the minimumlevel mark, remove the coolant reservoir
cap, add coolant to the maximum level
mark, install the reservoir cap.
Tightening torque:Differential gear oil filler bolt:23 Nm (2.3 m·kgf, 17 ft·lbf)
1. Coolant reservoir cap
2. Maximum level mark
3. Minimum level mark
123
UB427BE0.book Page 21 Friday, February 5, 2016 2:14 PM

8-25
8
rect torque is one-quarter to one-half turn
past finger tight. Have the spark plug
tightened to the specified torque as soon
as possible.
3. Install the spark plug cap.
4. Lower the cargo bed.
EBU34811Cleaning the air filter elementThe air filter element should be cleaned every
20–40 hours. It should be cleaned and lubri-
cated more often if the vehicle is operated in
extremely dusty areas. Each time air filter ele-
ment maintenance is performed, check the air
inlet to the air filter case for obstructions. Check the air filter element rubber joint to the
throttle body and manifold fittings for an air-
tight seal. Tighten all fittings securely to avoid
the possibility of unfiltered air entering the en-
gine.
NOTICEECB02270Never operate the engine with the air filter
element removed. Doing so would allow
unfiltered air to enter, causing rapid en-
gine wear and possible engine damage.
Additionally, the fuel injection system
would be affected, resulting in poor engine
performance and possible overheating. 1. Remove the center passenger seat cush-
ion. (See page 4-15 for seat cushion re-
moval and installation procedures.)
2. Lift up the rubber damper, and then re- move the center passenger seat by re-
moving the bolts.
Tightening torque:Spark plug:13 Nm (1.3 m·kgf, 9.4 ft·lbf)
UB427BE0.book Page 25 Friday, February 5, 2016 2:14 PM

8-31
8
EBU32440V-belt case drain plugThe V-belt case drain plug is located under
the cargo bed. (See page 4-22 for cargo bed
lifting and lowering procedures.)
After riding in water deep enough to allow wa-
ter to enter the V-belt case, remove the drain
plug to drain any water from the case.
If water drains from the V-belt case after re-
moving the drain plug, have a Yamaha dealer
inspect the vehicle, as the water may affect
other engine parts.
EBU32450Cleaning the spark arrester
WARNING
EWB03370Hot exhaust system may cause burns. To
avoid burns or fires, make sure that the en-
gine is stopped and the exhaust system is
cool before cleaning the spark arrester. Do
not start the engine while cleaning the ex-
haust system. 1. Remove the tailpipe bolts.
1. Air duct check hose
1
1. V-belt case drain plug
1
UB427BE0.book Page 31 Friday, February 5, 2016 2:14 PM

8-33
8
EBU32460Valve clearanceThe correct valve clearance changes with
use, resulting in improper fuel/air supply or
engine noise. To prevent this, the valve clear-
ance must be adjusted regularly. This adjust-
ment however, should be left to a
professional Yamaha service technician.EBU32470BrakesReplacement of brake components requires
professional knowledge. Brake service
should be performed by a Yamaha dealer.
WARNING
EWB02572Operating with improperly serviced or ad-
justed brakes could lead to a loss in brak-
ing ability and an accident.
EBU32480Checking the front and rear brake padsEach brake pad is provided with wear indica-
tor grooves, which allow you to check the
brake pad wear without having to disassem-
ble the brake. To check the brake pad wear,
check the wear indicator grooves. If a brake
pad has worn to the point that the wear indi-
cator grooves have almost disappeared, have
a Yamaha dealer replace the brake pads as a
set.
The wheels need to be removed to check the
brake pads. (See pages 8-40, 8-42 for wheel
removal and installation procedures.)
UB427BE0.book Page 33 Friday, February 5, 2016 2:14 PM

8-56
8
EBU32710Troubleshooting chartsStarting problems or poor engine performanceCheck the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the battery.
Supply fuel.
The engine does not start.
Check the battery.
Operate the electric starter.4. Compression
There is compression.
There is no compression.
The engine does not start.
Have a Yamaha dealer check the vehicle.Have a Yamaha dealer check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug. Have a Yamaha dealer check the vehicle.
The engine does not start.
Check the compression.
Operate the electric starter.2. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.
DryWet
Operate the electric starter.
Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
The engine does not start.
Check the ignition.
UB427BE0.book Page 56 Friday, February 5, 2016 2:14 PM

8-57
8
Engine overheating
Wait for the engine to cool before removing the radiator cap. WARNING! If the engine is not
cool when removing the radiator cap, hot fluid and steam could blow out under pressure
and burn you.
[EWB03460]
Place a thick rag over the cap and remove the cap slowly to allow any re-
maining pressure to escape.
TIPIf it is difficult to get the recommended coolant, tap water can be used temporarily, provided that
it is changed to the recommende d coolant as soon as possible. Wait until the
engine has cooled.
Check the coolant level in the
coolant reservoir and/or radiator.
Level is OK.Level is low, check the
cooling system for leakage.
No
leakage.Leakage.
Ask a Yamaha dealer to inspect
and repair the cooling system.Add coolant. (See TIP.)
Restart the engine. If the engine overheats again, ask a
Yamaha dealer to inspect and/or repair the cooling system.
UB427BE0.book Page 57 Friday, February 5, 2016 2:14 PM

12-1
12
INDEX
AAccelerator pedal ......................................................... 4-12
Accelerator pedal, Pre-operation check ........................ 5-6
Air filter case/duct check hose, cleaning ..................... 8-30
Air filter element, cleaning ............................................ 8-25
Auxiliary DC jack .......................................................... 4-24
Axle boots .................................................................... 8-22BBasic guide for safe use ................................................. 7-1
Battery, Periodic maintenance ..................................... 8-42
Brake fluid level, checking ........................................... 8-34
Brake fluid, replacing ...................................................8-36
Brake light switch, adjusting ........................................ 8-38
Brake pedal .................................................................. 4-12
Brake pedal and accelerator pedal, lubrication ........... 8-38
Brake pedal, checking ................................................. 8-36
Brakes, Periodic maintenance ..................................... 8-33
Brakes, Pre-operation check ......................................... 5-3CCable, inspecting and lubrication ................................ 8-38
Cargo bed .................................................................... 4-21
Cleaning ......................................................................... 9-1
Control cables, Pre-operation check ............................. 5-8
Coolant, Periodic maintenance .................................... 8-21
Coolant, Pre-operation check ........................................ 5-6
Coolant temperature warning light ................................. 4-4
Cup holders .................................................................. 4-20DDifferential gear oil, Periodic maintenance .................. 8-19Differential gear, Pre-operation check ........................... 5-6
Doors ........................................................................... 4-15
Driver seat position ...................................................... 4-16
Drive select lever .......................................................... 4-14
Drive select lever operation and reverse driving ............ 6-3
EEngine break-in .............................................................. 6-1
Engine oil and oil filter cartridge, Periodic
maintenance .............................................................. 8-11
Engine oil, Pre-operation check ..................................... 5-5
Engine trouble warning light .......................................... 4-4
EPS warning light ........................................................... 4-5FFinal gear oil, Periodic maintenance ............................ 8-16
Final gear, Pre-operation check ..................................... 5-6
Fittings and fasteners, Pre-operation check .................. 5-7
Front and rear brake pads, checking ........................... 8-33
Front and rear shock absorber assemblies ................. 4-23
Fuel, Pre-operation check .............................................. 5-3
Fuel tank cap ............................................................... 4-14
Fuse, replacing ............................................................. 8-47GGlove compartment ..................................................... 4-18HHeadlight beam, adjusting ........................................... 8-52
Headlight bulb, replacing ............................................. 8-50
Helmet indicator light ..................................................... 4-5
High-range indicator light .............................................. 4-2
Hood ............................................................................ 8-10
Horn switch .................................................................. 4-12
UB427BE0.book Page 1 Friday, February 5, 2016 2:14 PM