2017 YAMAHA GRIZZLY 350 engine

8-47
8
EBU25754Troubleshooting chart
Check 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.
The engine does not start.
Check the ignition.
Operate the electric starter.4. Compression
There is compression.
There is no compression.
The engine does not start. Have a Yamaha dealer check the ATV.Have a Yamaha dealer check the ATV.
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 ATV.
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.Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
DryWet
Open the throttle halfway and operate
the electric starter.
UB1463E0.book Page 47 Thursday, August 4, 2016 2:12 PM

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EBU25861
CLEANING AND STORAGE
EBU25882CleaningFrequent, thorough cleaning of your ATV will not
only enhance its appearance but will improve its
general performance and extend the useful life of
many components.1. Before cleaning the ATV: a. Block off the end of the exhaust pipe toprevent 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! Wet brakes may have re-
duced stopping ability, increasing the
chance of an accident. Test the brakes af-
ter washing. Apply the brakes several
times at slow speeds to let friction dry out
the linings.
[EWB02312]
NOTICE: Excessive wa-
ter pressure may cause water seepage and deterioration of wheel bearings,
brakes, transmission seals and electrical
devices. Many expensive repair bills have
resulted from improper high-pressure de-
tergent applications such as those avail-
able in coin-operated car washers.
[ECB00712]
4. Once most 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-reach pla-
ces.
5. Rinse the ATV off immediately with clean wa- ter and dry all surfaces with a chamois, clean
towel or soft absorbing cloth.
6. Clean the seat with a vinyl upholstery cleaner to keep the cover 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 mar the paint or protec-
tive finish. When finished cleaning, start the
engine and let it idle for several minutes.
UB1463E0.book Page 1 Thursday, August 4, 2016 2:12 PM

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EBU25934StorageShort-term
Always store your ATV in a cool, dry place and, if
necessary, protect it against dust with a porous
cover. NOTICE: Storing the ATV in a poorly ven-
tilated room or covering it with a tarp while it is
still wet, will allow water and humidity to seep
in and cause rust. To prevent corrosion, avoid
damp cellars, stables (because of the presence
of ammonia) and areas where strong chemi-
cals are stored.
[ECB00722]
Long-term
Before storing your ATV for several months: 1. Follow all the instructions in the “Cleaning” section of this chapter.
2. Turn the fuel cock lever to “OFF”.
3. Drain the carburetor float chamber by loosen- ing the drain bolt; this will prevent fuel depos-
its from building up. Pour the drained fuel into
the fuel tank.
4. Fill up the fuel tank and add fuel stabilizer (if available) to prevent the fuel from deteriorat-
ing. 5. Perform the following steps to protect the cyl-
inder, piston rings, etc. from corrosion.a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place the spark plug on the
cylinder head so that the electrodes are
grounded. (This will limit sparking during
the next step.)
d. Turn the engine over several times with the starter. (This will coat the cylinder wall
with oil.)
e. Remove the spark plug cap from the spark plug, and then install the spark plug and
the spark plug cap.
6. Lubricate all control cables and the pivoting points of all levers and pedals.
7. Check and, if necessary, correct the tire air pressure, and then block up the ATV so that
all of its wheels are off the ground. Alterna-
Specified amount:
7.5 ml of stabilizer to each liter of fuel (or 1
oz of stabilizer to each gallon of fuel)UB1463E0.book Page 2 Thursday, August 4, 2016 2:12 PM

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EBU25962
SPECIFICATIONS
Dimensions:Overall length:1984 mm (78.1 in)
Overall width: 1085 mm (42.7 in)
Overall height:
1120 mm (44.1 in)
Seat height: 827 mm (32.6 in)
Wheelbase: 1233 mm (48.5 in)
Ground clearance:
245 mm (9.6 in)
Minimum turning radius: 3000 mm (118 in)Weight:Curb weight:
238.0 kg (525 lb)Noise and vibration level:Noise level (77/311/EEC):77.6 dB(A) (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: 0.2 m/s² (EUR, FRA, GBR) Vibration on handle (EN1032, ISO5008):
2.8 m/s² (EUR, FRA, GBR)
Uncertainty of measurement: 0.7 m/s² (EUR, FRA, GBR)
Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement: Single cylinder
Displacement: 348 cm³
Bore × stroke:
83.0 × 64.5 mm (3.27 × 2.54 in)
Compression ratio: 9.2 : 1
Starting system: Electric starter
Lubrication system:
Wet sumpEngine oil:Recommended brand:YAMALUBE
UB1463E0.book Page 1 Thursday, August 4, 2016 2:12 PM

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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:Yamaha Friction Modified Plus Shaft Drive Oil (Part No.:
ACC-SHFTL-PL-32) or SAE 80 API GL-4 Hypoid gear oil
Quantity: 0.23 L (0.24 US qt, 0.20 Imp.qt)
Air filter:Air filter element:Wet elementFuel:Recommended fuel:Regular unleaded gasoline only
Fuel tank capacity: 13.5 L (3.56 US gal, 2.97 Imp.gal)
Fuel reserve amount:
3.3 L (0.87 US gal, 0.73 Imp.gal)Carburetor:Type × quantity:
BSR33 x 1Spark plug (s):Manufacturer/model: NGK/DR8EA
Spark plug gap: 0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:Wet, centrifugal automaticTransmission:Secondary reduction system:
Shaft drive
Secondary reduction ratio: 41/21 × 24/18 × 33/9 (9.545)
Transmission type: V-belt automatic
Operation:
Left hand operation
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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INDEX
AAccessories and loading ................................................ 6-6
Air filter element, cleaning ........................................... 8-18BBattery ......................................................................... 8-37
Brake fluid, changing ................................................... 8-29
Brake fluid level, checking ........................................... 8-27
Brake lever free play, checking the front ..................... 8-29
Brake lever, front ........................................................... 4-5
Brake levers, checking and lubricating ........................ 8-35
Brake light switches ..................................................... 8-34
Brake pads and shoes, checking ................................ 8-26
Brake pedal and rear brake lever ................................... 4-6
Brake pedal, checking and lubricating ........................ 8-36
Brakes .......................................................................... 8-26
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................ 8-35
Carburetor, adjusting ................................................... 8-23
Carrier, front ................................................................. 4-14
Carrier, rear .................................................................. 4-14
Chassis fasteners .......................................................... 5-6
Cleaning ......................................................................... 9-1DDrive select lever ........................................................... 4-7
Drive select lever and driving in reverse ........................ 6-3
Drive select lever safety system cable, adjusting ........ 8-26EEngine break-in .............................................................. 6-4Engine, cold start ........................................................... 6-1
Engine idling speed ..................................................... 8-23
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge .................................. 8-11
Engine, starting a warm ................................................. 6-3
Engine stop switch ........................................................ 4-3
FFinal gear oil ......................................................... 5-3, 8-15
Fuel ......................................................................... 4-8, 5-3
Fuel cock ..................................................................... 4-10
Fuel tank cap ................................................................. 4-8
Fuses, replacing .......................................................... 8-40HHandlebar switches ....................................................... 4-3
Headlight beam, adjusting ........................................... 8-43
Headlight bulb, replacing ............................................. 8-42
Horn switch .................................................................... 4-4IIdentification numbers ................................................. 11-1
Indicator lights and warning light ................................... 4-2
Instruments, lights and switches ................................... 5-6LLabel locations ............................................................... 1-1
Light switch ................................................................... 4-4MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................ 8-5
Maintenance chart, emission control system ................ 8-3
Model label .................................................................. 11-1
UB1463E0.book Page 1 Thursday, August 4, 2016 2:12 PM