Page 8 of 132
EBU17420
TABLE OF CONTENTS
SAFETY INFORMATION .............................. 1-1
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ............................ 2-1
DESCRIPTION .............................................. 3-1
Left view ..................................................... 3-1
Right view................................................... 3-1
Controls and instruments ........................... 3-2
INSTRUMENT AND CONTROL
FUNCTIONS .................................................. 4-1
Main switch ............................................... 4-1
Indicator light ............................................. 4-2
Handlebar switches ................................... 4-2
Throttle lever ............................................. 4-3
Throttle OverRide System ......................... 4-4
Speed limiter ............................................. 4-4
Clutch lever ............................................... 4-5
Brake lever ................................................ 4-5
Brake pedal ............................................... 4-5
Parking brake ............................................ 4-6
Shift pedal ................................................. 4-7
Kickstarter ................................................. 4-7
Fuel tank cap ............................................. 4-8Fuel ............................................................ 4-8
Fuel cock ................................................... 4-9
Starter (choke) ......................................... 4-11
Seat ......................................................... 4-11
Adjusting the front shock absorber
assemblies .............................................4-12
Adjusting the rear shock absorber
assembly ................................................4-13
PRE-OPERATION CHECKS ..........................5-1
Pre-operation check list ............................. 5-1
Fuel ............................................................ 5-4
2-stroke engine oil ..................................... 5-4
Transmission oil ......................................... 5-4
Front and rear brakes ................................ 5-4
Throttle lever .............................................. 5-5
Drive chain ................................................. 5-5
Tires ........................................................... 5-6
Measuring the tire pressure ....................... 5-7
Tire wear limit ............................................ 5-8
Chassis fasteners ...................................... 5-8
Instruments, lights and switches ................ 5-8
OPERATION...................................................6-1
Starting a cold engine ................................ 6-1
Starting a warm engine .............................. 6-2
Page 21 of 132
3-1
1
23
4
5
6
7
8
9
10
11
EBU17680
DESCRIPTION
EBU17690
Left view
EBU17700
Right view
1. Front shock absorber assembly
2. Fuel cock
3. Starter (choke)
4. Rear shock absorber assembly
5. Tail/brake light
6. Footrest
1
2
3
4
5
6
1. Seat
2. Fuel tank cap
3. Headlight
4. Brake pedal
5. Brake light switch
6. Kickstarter
1
2
3
456
Page 34 of 132
4-12
1
2
34
5
6
7
8
9
10
11
To install the seat
Insert the projections on the front of the seat into
the seat holders and push down on the seat at the
rear.
NOTE:
Make sure that the seat is securely fitted.
EBU18990
Adjusting the front shock absorber
assemblies
The spring preload can be adjusted to suit the rid-
er’s weight and the riding conditions.
Adjust the spring preload as follows.
Turn the adjusting ring in direction (a) to increase
the spring preload and thereby harden the suspen-
sion, and in direction (b) to decrease the spring
preload and thereby soften the suspension.
1. Seat lock lever
1
1. Projection
2. Seat holder
1
2
Page 35 of 132
4-13
1
2
34
5
6
7
8
9
10
11
NOTE:
A special wrench can be obtained at a Yamaha
dealer to make this adjustment.WARNING
EWB00400
Always adjust the shock absorber assemblies
on the left and right side to the same setting.
Uneven adjustment can cause poor handling
and loss of stability, which could lead to an ac-
cident.
EBU28240
Adjusting the rear shock absorber
assembly
The spring preload can be adjusted to suit the rid-
er’s weight and the riding conditions.
Adjust the spring preload as follows.
1. Loosen the locknut.
2. Turn the adjusting nut in direction (a) to in-
crease the spring preload and thereby harden
the suspension, and in direction (b) to de-
crease the spring preload and thereby soften
the suspension.
1. Spring preload adjusting ring
2. Position indicator
Spring preload setting:
Minimum (soft):
A
Standard:
B
Maximum (hard):
E
2
1
(a)
(b)
Page 37 of 132
4-15
1
2
34
5
6
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11
3. Tighten the locknut to the specified torque.
CAUTION:
ECB00080
Always tighten the locknut against the adjust-
ing nut, and then tighten it to the specified
torque.
WARNING
EWB00450
This shock absorber assembly contains highly
pressurized nitrogen gas. If the shock absorb-
er assembly is damaged, it could explode
causing injury or property damage. Shock ab-
sorber cylinder damage could also result in
poor handling which could cause an accident.
Do not tamper with or attempt to open the
cylinder assembly.
Do not subject the shock absorber assembly
to an open flame or other high heat.
Do not deform or damage the cylinder in any
way.
Do not dispose of a damaged or worn outshock absorber assembly yourself. Take the
shock absorber assembly to a Yamaha deal-
er for any service.
Tightening torque:
Locknut:
55 Nm (5.5 m·kgf, 40 ft·lbf)
Page 80 of 132
8-5
1
2
3
4
5
6
78
9
10
11
16
*
Shock absorber
assemblies
Check operation and correct if necessary.
Check for oil leakage and replace if necessary.
√√√
17
*
Steering shaft
Lubricate with lithium-soap-based grease.
√√√
18
*
Steering system
Check operation and repair or replace if damaged.
Check toe-in and adjust if necessary.
√√√√√
19
*
Carburetor
Check starter (choke) operation and correct if nec-
essary.
Check engine idling speed and adjust if neces-
sary.
√√√√
20
*
Crankcase breather
system
Check breather hose for cracks or other damage,
and replace if necessary.
√√√
21 Transmission oil
Change.
Check ATV for oil leakage, and correct if neces-
sary.
√ √√√
22
*
Autolube pump
Check operation and bleed if necessary.
√√√
23
*
Moving parts and
cables
Lubricate.
√√√√
24
*
Throttle lever hous-
ing and cable
Check operation and correct if necessary.
Check throttle cable free play and adjust if neces-
sary.
Lubricate throttle lever housing and cable.
√√√√√
25
*
Exhaust system
Check for leakage and replace gasket(s) if neces-
sary.
Check for looseness and tighten all screw clamps
and joints if necessary.
√√√
NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth 1 3 6 6 12
km
(mi)320
(200)1200
(750)2400
(1500)2400
(1500)4800
(3000)
hours 20 75 150 150 300
Page 121 of 132
9-1
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2
3
4
5
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7
89
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EBU25860
CLEANING AND STORAGE
EBU25900
Cleaning
Frequent, 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 to
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 de-
greaser to the chain, sprockets or wheel ax-
les.
3. Rinse the dirt and degreaser off with a garden
hose. Use only enough pressure to do the job.
CAUTION:
ECB00710
Excessive water pressure may cause water
seepage and deterioration of wheel bearings,
brakes, transmission seals and electrical de-
vices. Many expensive repair bills have result-ed from improper high-pressure detergent
applications such as those available in coin-
operated car washers.
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 bot-
tle brush is handy for hard-to-reach places.
5. Rinse the ATV off immediately with clean wa-
ter and dry all surfaces with a chamois, clean
towel or soft absorbing cloth.
6. Dry the chain and lubricate it to prevent it from
rusting.
7. Clean the seat with a vinyl upholstery cleaner
to keep the cover pliable and glossy.
8. 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.
Page 126 of 132
10-3
1
2
3
4
5
6
7
8
910
11
Manufacturer/model:
CHENG SHIN/C-874N
Loading:
Maximum loading limit:
100.0 kg (220 lb)
(Total weight of rider, cargo, accessories, and tongue)
Tire air pressure (measured on cold tires):
Recommended:
Front:
30.0 kPa (4.4 psi) (0.300 kgf/cm
2
)
Rear:
25.0 kPa (3.6 psi) (0.250 kgf/cm
2
)
Minimum:
Front:
27.0 kPa (3.9 psi) (0.270 kgf/cm
2
)
Rear:
22.0 kPa (3.2 psi) (0.220 kgf/cm
2
)
Maximum:
Front:
33.0 kPa (4.8 psi) (0.330 kgf/cm
2
)
Rear:
28.0 kPa (4.1 psi) (0.280 kgf/cm
2
)
Front wheel:
Wheel type:
Panel wheel
Rim size:
10 x 5.5AT
Rear wheel:
Wheel type:
Panel wheelRim size:
8 x 8.0AT
Front brake:
Type:
Dual disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 4
Rear brake:
Type:
Single disc brake
Operation:
Right foot operation
Recommended fluid:
DOT 4
Front suspension:
Type:
Double wishbone
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
180 mm (7.1 in)
Rear suspension:
Type:
Swingarm (monocross)
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
180 mm (7.1 in)
