Page 50 of 86
Periodic maintenance an d a djustment
7-8
7 4. If the engine oil is at or below the
minimum level mark, add suffi-
cient oil of the recommended type
to raise it to the correct level.
5. Check the O-ring for damage, and replace it if necessary.
6. Insert the dipstick into the oil filler hole, and then tighten the oil filler
cap.
To chan ge the en gine oil
1. Start the engine, warm it up for several minutes, and then turn it
off.
2. Place an oil pan under the engine to collect the used oil.
3. Remove the engine oil filler cap, the engine oil drain bolt and its
gasket to drain the oil from the
crankcase.
4. Install a new gasket and the drain bolt, and then tighten the drain
bolt to the specified torque.
5. Refill with the specified amount of the recommended engine oil.
NOTICE
ECA11621
In or der to prevent clutch slip-
pa ge (since the en gine oil also
lu bricates the clutch), do not
mix any chemical add itives. Do
not use oils with a d iesel speci-
fication of “CD” or oils of a hi gh-
er quality than specified . In
a ddition, do not use oils la bele d
“ENERGY CONSERVING II” or
hi gher.
Make sure that no forei gn mate-
rial enters the crankcase.
6. Check the O-ring for damage, and replace it if necessary.
7. Install and tighten the engine oil filler cap.
8. 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.
9. Turn the engine off, and then check the oil level and correct it if
necessary.
1. Engine oil drain bolt
2. Gasket
Tightenin g torque:
Engine oil drain bolt: 20 N·m (2.0 kgf·m, 15 lb·ft)
12
Recommen ded en gine oil:
See page 9-1.
Oil chan ge quantity:
0.80 L (0.85 US qt, 0.70 Imp.qt)
1. O-ring
1
UBEG80E0.book Page 8 Friday, May 24, 2019 6:49 PM
Page 51 of 86
Periodic maintenance an d a djustment
7-9
7
EAU39835
Cleanin g the air filter element
The air filter element should be cleaned
as follows at the intervals specified in
the periodic maintenance and lubrica-
tion chart. Clean or, if necessary, re-
place the air filter element more
frequently if you are riding in unusually
wet or dusty areas.
To clean the air filter element
1. Remove the air filter case cover by removing the screws.
2. Pull the sponge material and the air filter mesh out. 3. Clean the mesh with solvent, and
then wipe the solvent off.
4. Clean the sponge material with solvent, and then squeeze the re-
maining solvent out. WARNING!
Use only a ded icated parts
cleanin g solvent. To avoi d the
risk of fire or explosion, do not
use gasoline or solvents with a
low flash point.
[EWA10432] NOTICE:
To avoi d damag ing the foam
material, han dle it g ently an d
carefully, an d d o not twist or
wrin g it.
[ECA10512]
5. 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.
1. Screw
2. Air filter case cover
1. Sponge material
1. Air filter mesh
UBEG80E0.book Page 9 Friday, May 24, 2019 6:49 PM
Page 82 of 86
Specifications
9-1
9
Dimensions:
Overall length:1305 mm (51.4 in)
Overall width:
595 mm (23.4 in)
Overall height: 795 mm (31.3 in)
Seat height: 555 mm (21.9 in)
Wheelbase:
925 mm (36.4 in)
Ground clearance: 135 mm (5.31 in)
Wei ght:
Curb weight:
58 kg (128 lb)
Maximum rider weight:
40.0 kg (88 lb)
Technical permissible mass (Maximum load +
Curb weight):
98 kg (216 lb)
Noise an d vi bration level:
Noise level (77/311/EEC):
76.7 dB(A) at 4250 r/min (TT-R50E)
Uncertainty of measurement:
3.0 dB(A) (TT-R50E)
Vibration on seat (EN1032, ISO5008): Will not exceed 0.5 m/s² (TT-R50E)
Uncertainty of measurement: 0.0 m/s² (TT-R50E)
Vibration on handlebar (EN1032, ISO5008):
Will not exceed 2.5 m/s² (TT-R50E)
Uncertainty of measurement: 0.6 m/s² (TT-R50E)
Engine:
Combustion cycle:
4-stroke
Cooling system: Air cooled
Valve train: SOHC
Number of cylinders:
Single cylinder
Displacement: 49 cm³
Bore × stroke:
36.0 × 48.6 mm (1.42 × 1.91 in)
Starting system:
Electric starter
Engine oil:
Recommended brand:
YAMALUBE
SAE viscosity grades:
10W-40
Recommended engine oil grade: API service SG type or higher, JASO
standard MA
Engine oil quantity: Oil change:
0.80 L (0.85 US qt, 0.70 Imp.qt)
Fuel:
Recommended fuel:Regular unleaded gasoline (Gasohol [E10]
acceptable)
Fuel tank capacity: 3.1 L (0.8 US gal, 0.7 Imp.gal)
Fuel reserve amount: 0.4 L (0.11 US gal, 0.09 Imp.gal)
Car buretor:
Type × quantity:
VM11 × 1
Drivetrain:
Gear ratio:
1st:
3.250 (39/12)
2nd:
1.737 (33/19)
3rd: 1.217 (28/23)
Front tire:
Type:
With tube
Size: 2.50-10 4PR
Manufacturer/model: CHENG SHIN/C183A
Speed rating:
100 km/h (62 mph)
Rear tire:
Type:With tube
Size:
2.50-10 4PR
Manufacturer/model: CHENG SHIN/C183A
Speed rating: 100 km/h (62 mph)
UBEG80E0.book Page 1 Friday, May 24, 2019 6:49 PM