engine YAMAHA BREEZE 2003 Workshop Manual

9-5
7. Clean the seat with a vinyl upholstery clean-
er 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 pro-
tective finish.
When finished, start the engine and let it idle
for several minutes.wWet brakes may have reduced stopping abili-
ty, increasing the chance of an accident.
Test the brakes after washing. Apply the
brakes several times at slow speeds to let
friction dry out the linings.
5VJ-9-60-09~11 3/26/02 9:18 PM Page 6

9-7
EBU00526B. STORAGE
Long term storage (60 days or more) of your
machine will require some preventive procedu-
res to guard against deterioration. After tho-
roughly cleaning the machine, prepare for stora-
ge as follows:
1. Fill the fuel tank with fresh fuel and add fuel
stabilizer (if available).NOTE:
Use of fuel stabilizer eliminates the need to
drain the fuel system. Consult a Yamaha dealer
if the fuel system is to be drained instead.2. Remove the spark plug, pour about one
tablespoon of SAE 10W30 or 20W40 motor
oil in the spark plug hole and reinstall the
spark plug. Ground the spark plug wire and
turn the engine over several times to coat
the cylinder wall with oil.
5VJ-9-60-09~11 3/26/02 9:18 PM Page 8

10-1
SPECIFICATIONS
Model YFA1
Dimensions:
Overall length 1,640 mm
Overall width 965 mm
Overall height 980 mm
Seat height 690 mm
Wheelbase 1,080 mm
Minimum ground clearance 145 mm
Minimum turning radius 2,900 mm
Basic weight:With oil and full fuel tank 144 kg
Engine:
Engine type Air-cooled, 4-stroke, SOHC
Cylinder arrangement Singlel cylinder, Forward-inclined
Displacement 124 cm
3
Bore × stroke 49 ×66 mm
Compression ratio 9.0 : 1
Starting system Electric starter
Lubrication system Wet sump
EBU00428
5VJ-9-60-09~11 3/26/02 9:18 PM Page 12

10-2
10
Model YFA1
Engine oil/transmission oil:
Type
Recommended engine oil/transmission API Service SE, SF, SG type or higher
oil classification:
Quantity
Engine oil:
Periodic oil change 1.25 L
Total amount1.45 L
Transmission oil: 0.6 L
cCBe sure to use motor oils that do not contain
anti-friction modifiers. Passenger car motor
oils (often labeled “ENERGY CONSERVING
II”)
contain anti-friction additives which will cause
clutch and/or starter clutch slippage, resulting
in reduced component life and poor engine
performance.
–20° 10° 20° 30° 40°
10W30
10W40
20W40
20W5050°C
0° –10°
5W30
15W40
5VJ-9-60-09~11 3/26/02 9:18 PM Page 13

10-3
Model YFA1
Air filter:
for engine Wet type element
for V-belt compartment Dry type element
Fuel:
Type Regular unleaded gasoline only
Fuel tank capacity 7.0 LFuel reserve amount 1.3 L
Carburetor:Type/manufacturer VM18SH/MIKUNI
Spark plug:
Type/manufacturer CR7HS/NGKGap 0.6–0.7 mmClutch type: Dry, centrifugal automatic
Transmission:
Primary reduction system Helical gear/Spur gear
Primary reduction ratio 43/14 ×40/17 (7.226)
Secondary reduction system Chain drive
Secondary reduction ratio 32/12 (2.666)
Transmission type/Reduction ratio V-belt automatic/2.30 – 0.82
Reverse (2.30 – 0.82) ×49/14 ×49/15 ×40/17
(61.874 – 22.059)
5VJ-9-60-09~11 3/26/02 9:18 PM Page 14