Periodic maintenance an d a djustment
7-11
7 4. Apply oil of the recommended
type to the entire surface of the
sponge material, and then
squeeze the excess oil out.
TIP
The sponge material should be wet but
not dripping.
5. Insert the sponge material into theair filter case. NOTICE: Make
sure that the spon ge material is
properly seate d in the air filter
case. The en gine shoul d never
b e operated without the spon ge
material installe d, otherwise the
piston(s) an d/or cylin der(s) may
b ecome excessively worn.
[ECA15622]
6. Install the air filter case cover by
installing the screw.
7. Install the seat.
EAU41222
Cleanin g the spark arrester
The spark arrester should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
WARNING
EWA10981
Always let the exhaust system
cool prior to touchin g exhaust
components.
Do not start the en gine when
cleanin g the exhaust system.
1. Remove the tailpipe by removing
the screw, and then pulling it out
of the muffler.
2. Tap the tailpipe lightly, and then use a wire brush to remove any
carbon deposits from the spark
arrester portion of the tailpipe and
inside of the tailpipe housing.
Recommen ded oil:
Yamaha foam air filter oil or other
quality foam air filter oil
1. Tailpipe
2. Screw
3. Muffler
1
2
3
U2SA83E0.book Page 11 Monday, July 11, 2016 2:35 PM
Specifications
9-2
9
Spark plug(s):
Manufacturer/model:
NGK/BP4HS (PW50_ZAF)
NGK/BPR4HS
(PW50_AUT/BEL/CHE/CYP/CZE/DEU/DN
K/ESP/FIN/FRA/GBR/GRC/IRL/ITA/NLD/
NOR/POL/PRT/SVK/SVN/SWE/TUR,
PW50H, PW50H2)
Manufacturer/model: DENSO/W14FP-L (PW50_ZAF)
Spark plug gap: 0.6–0.7 mm (0.024–0.028 in)
Clutch:
Clutch type:
Wet, centrifugal, shoe
Drivetrain:
Primary reduction ratio:1.909 (63/33)
Final drive:
Shaft
Secondary reduction ratio: 6.218 (19/15 x 54/11)
Chassis:
Frame type:
Backbone
Caster angle: 25.5 °
Trail: 50 mm (2.0 in)
Front tire:
Type:With tube
Size: 2.50-10 4PR
Manufacturer/model:
BRIDGESTONE/M29
Manufacturer/model: IRC/Z MARK II (PW50_ZAF, PW50H,
PW50H2)
Speed rating: 100 km/h (62 mph)
Rear tire:
Type:
With tube
Size: 2.50-10 4PR
Manufacturer/model: BRIDGESTONE/M29 Manufacturer/model:
IRC/Z MARK II (PW50_ZAF, PW50H,
PW50H2)
Speed rating: 100 km/h (62 mph)
Tire air pressure (measure d on col d
tires):
Front:
100 kPa (1.00 kgf/cm², 15 psi)
Rear: 100 kPa (1.00 kgf/cm², 15 psi)
Front wheel:
Wheel type: Panel wheel
Rim size: 10 x 1.50
Rear wheel:
Wheel type:
Panel wheel
Rim size: 10 x 1.50
Front brake:
Type:
Mechanical leading trailing drum brake
Rear brake:
Type:
Mechanical leading trailing drum brake
Front suspension:
Type:Telescopic fork
Spring: Coil spring
Shock absorber:
Hydraulic damper
Wheel travel: 60 mm (2.4 in)
Rear suspension:
Type:
Unit swing
Spring: Coil spring
Shock absorber: Hydraulic damper
Wheel travel:
50 mm (2.0 in)
Electrical system:
Ignition system:CDI
U2SA83E0.book Page 2 Monday, July 11, 2016 2:35 PM
