engine YAMAHA VIKING 2017 Service Manual

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
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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.)
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8
4. Connect the negative lead of the jumpercable to the negative terminal of the
charged battery and the other end of the
negative lead to an unpainted metal sur-
face of the frame of the vehicle to be
started.
5. Start the engine. (Refer to “Starting the engine” on page 6-2.)
6. After the engine starts, disconnect the
negative lead of the jumper cable from
the frame and charged battery, and then disconnect the positive lead of the jump-
er cable from the charged battery and the
battery in the vehicle.
7. Install the hood.
EBU33100Fuse replacementThe main fuse, the fuel injection system fuse,
the EPS fuse, and the fuse box are located
under the hood. (See page 8-10 for hood re-
moval and installation procedures.)
1. Jumper cable negative lead
1
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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.
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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.
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EBU32720
CLEANING AND STORAGE
EBU32731CleaningFrequent, thorough cleaning of your vehicle
will not only enhance its appearance but will
improve its general performance and extend
the useful life of many components.1. Before cleaning the vehicle: a. Block off the end of the exhaust pipeto prevent water entry. A plastic bag
and strong rubber band may be used.
b. Make sure the spark plug and all filler caps are properly installed.
2. If the engine case is excessively greasy, apply degreaser with a paint brush. Do
not apply degreaser to the wheel axles.
3. Rinse the dirt and degreaser off with a garden hose. Use only enough pressure
to do the job. WARNING! Test the
brakes after washing. Apply the
brakes several times at slow speeds to
let friction dry the brakes. Wet brakes may have reduced stopping ability, in-
creasing the chance of an accident.
[EWB03471]

NOTICE: Excessive water pres-
sure may cause water seepage and
deterioration of wheel bearings,
brakes, transmission seals and electri-
cal devices. Many expensive repair
bills have resulted from improper high-
pressure detergent applications such
as those available in coin-operated car
washers.
[ECB00712]
TIPThe tailgate can be removed to make it easier
to clean the cargo bed. To separate the tail-
gate from the cargo bed, unhook the latches,
lift the left side of the tailgate and pull the tail-
gate to the left. 4. Once the majority of the dirt has been hosed off, wash all surfaces with warm
water and mild, detergent-type soap. An
old toothbrush or bottle brush is handy
for hard-to-get-at places.
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5. Rinse the vehicle off immediately with
clean water and dry all surfaces with a
clean chamois towel or soft, absorbent
cloth.
6. Clean the seats with a vinyl upholstery
cleaner to keep the covers pliable and
glossy.
7. Automotive-type wax may be applied to
all painted and chrome-plated surfaces.
Avoid combination cleaner-waxes. Many
contain abrasives which may scratch the
paint or protective finish. When finished,
start the engine and let it idle for several
minutes.EBU36120StorageLong term storage (60 days or more) of your
vehicle will require some preventive proce-
dures to guard against deterioration. Make
any necessary repairs before storing the vehi-
cle. After thoroughly cleaning the vehicle, prepare
for storage as follows:
1. Fill the fuel tank with fresh fuel and add the specified amount of Fuel Med Rx or
another high-quality fuel stabilizer prod-
uct. Follow the instructions on the prod-
uct label. Operate the vehicle for at least
5 minutes to distribute treated fuel
through the fuel system.
2. Remove the spark plug and pour one ta- blespoon of fresh engine oil into the cyl-
inder and then re-install the spark plug.
Remove the spark plug wire and ground
it. Operate the electric starter to turn the
engine over several times and coat the
cylinder walls with oil.
3. Lubricate all control cables.
Specified amount: 1 oz of stabilizer to each gallon of fuel (or
7.5 ml of stabilizer to each liter of fuel)
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EBU32750
SPECIFICATIONS
Dimensions:Overall length:3100 mm (122.0 in)
Overall width: 1570 mm (61.8 in) (YXM70VPHH, YXM70VPXH)
1625 mm (64.0 in) (YXM70VPSH)
Overall height: 1925 mm (75.8 in)
Wheelbase:
2135 mm (84.1 in)
Ground clearance: 300 mm (11.8 in)
Minimum turning radius: 4500 mm (177 in)Weight:Curb weight:649.0 kg (1431 lb) (YXM70VPHH, YXM70VPXH)
654.0 kg (1442 lb) (YXM70VPSH)Noise and vibration level:Noise level (77/311/EEC):83.0 dB(A) (YXM70VPXH_EUR/FRA/GBR)
Uncertainty of measurement:
3.0 dB(A) (YXM70VPXH_EUR/FRA/GBR)
A-weighted sound power level: 93.0 dB(A) (YXM70VPXH_EUR/FRA/GBR)
Uncertainty of measurement: 3.0 dB(A) (YXM70VPXH_EUR/FRA/GBR) Vibration on seat (EN1032, ISO5008):
Will not exceed 0.5 m/s² (YXM70VPXH_EUR/FRA/GBR)
Uncertainty of measurement: 0.0 m/s² (YXM70VPXH_EUR/FRA/GBR)
Vibration on handle (EN1032, ISO5008): Will not exceed 2.5 m/s² (YXM70VPXH_EUR/FRA/GBR)
Uncertainty of measurement:
0.2 m/s² (YXM70VPXH_EUR/FRA/GBR)
Engine:Engine type:Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
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
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Type:SAE 5W-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:2.20 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)Final gear oil:Type:SAE 80 API GL-4 Hypoid gear oil
Quantity: 0.40 L (0.42 US qt, 0.35 Imp.qt)Differential gear oil:Type:SAE 80 API GL-4 Hypoid gear oil Quantity:
0.18 L (0.19 US qt, 0.16 Imp.qt)
Coolant quantity:Coolant reservoir (up to the maximum level mark):
0.28 L (0.30 US qt, 0.25 Imp.qt)
Radiator (including all routes): 2.74 L (2.90 US qt, 2.41 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:Regular unleaded gasoline only
Fuel tank capacity:
36.7 L (9.69 US gal, 8.07 Imp.gal)Fuel injection:Throttle body:ID mark:1XD1 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 automaticTransmission:Secondary reduction system:Shaft drive
0 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
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Tail/brake light:12 V, 5.0/21.0 W × 2
Neutral indicator light: LED
Reverse indicator light:
LED
Coolant temperature warning light: LED
Engine trouble warning light: LED
Park indicator light:
LED
High-range indicator light: LED
Low-range indicator light: LED
Differential gear lock indicator light:
LED
EPS warning light: LED
Helmet/Seat belt indicator light: 14 V, 0.85 W × 2Fuses:Main fuse:
40.0 A
Fuel injection system fuse: 10.0 A
EPS fuse:
40.0 A
Headlight fuse: 15.0 A Signaling system fuse:
10.0 A
Ignition fuse: 10.0 A
Auxiliary DC jack fuse:
10.0 A
Backup fuse: 10.0 A
Four-wheel-drive motor fuse: 10.0 A
Radiator fan motor fuse:
25.0 A
EBU33221For Europe only
The figures quoted are emission levels and
are not necessarily safe working levels. Whilst
there is a correlation between the emission
and exposure levels, this cannot be used reli-
ably to determine whether or not further pre-
cautions are required. Factors that influence
the actual level of exposure of work-force in-
clude the characteristics of the work room,
the other sources of noise, etc. i.e. the num-
ber of machines and other adjacent process-
es, and the length of time for which an
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