clutch YAMAHA YBR250 2007 User Guide

6-21
6
PERIODIC MAINTENANCE AND MINOR REPAIR
EAU23100
Checking and lubricating the
cablesThe operation of all control cables and
the condition of the cables should be
checked before each ride, and the
cables and cable ends should be
lubricated if necessary. If a cable is
damaged or does not move smoothly,
have a Yamaha dealer check or replace
it.Recommended lubricant:Engine oil
EWA10720
Damage to the outer sheath may
interfere with proper cable operation
and will cause the inner cable to rust.
Replace a damaged cable as soon as
possible to prevent unsafe
conditions.
EAU23111
Checking and lubricating the
throttle grip and cableThe operation of the throttle grip should
be checked before each ride. In addition,
the cable should be lubricated at the
intervals specified in the periodic
maintenance chart.
EAU23140
Checking and lubricating the
brake and clutch levers
1
2
1. Brake lever
2. Lubrication point1. Clutch lever
2. Lubrication pointThe operation of the brake and clutch
levers should be checked before each
ride, and the lever pivots should be
lubricated if necessary.
cap 6.pmd 18/4/2007, 14:35
21

8-1
SPECIFICATIONS
8
Dimensions:Overall length:2025 mm (79.7 in)
Overall width: 745 mm (29.3 in)
Overall height:
1065 mm (41.9 in)
Seat height:
805 mm (31.7 in)
Wheelbase: 1360 mm (53.5 in)
Ground clearance:
190 mm (7.5 in)
Minimum turning radius:
2395 mm (94.3 in)Weight:With oil and fuel:154.0 kg (339 lb)Engine:Engine type:Air cooled 4-stroke, SOHC
Cylinder arrangement: Forward-inclined single cylinder
Displacement:
249.0 cm
3 (15.2 cu.in)
Bore x stroke:
74.0 x 58.0 mm (2.91 x 2.28 in)
Compression ratio: 9.80:1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Type:SAE20W40 or SAE20W50Recommended engine oil grade: API service SF, SG type or higher
Engine oil quantity:
Without oil filter element replacement 1.35 L (1.43 US qt) (1.19 imp. qt)
With oil filter element replacement
1.45 L (1.53 US qt) (1.28 imp. qt)Air filter:Air filter element:Wet elementFuel:Recommended fuel:Regular unleaded gasoline only
Fuel tank capacity:
19.2 L (5.07 US gal) (4.22 imp. gal)
Fuel reserve amount:
4.5 L (1.19 US gal) (1.00 imp. gal)
Fuel injection:Manufacturer:AISAN
Model/quantity: 1100-87F70/1Spark plug:Manufacturer/model:NGK/DR8EA
Spark plug gap:
0.6-0.7 mm (0.024 - 0.028 in)Clutch:Clutch type:Wet, multiple-discTransmission:Primary reduction system:Spur gear
Primary reduction ratio:
74/24 (3.083)
Secondary reduction system: Chain drive
Secondary reduction ratio:
44/15 (2.933)
Transmission type:
Constant mesh 5-speed
Operation: Left foot operation
Gear ratio:
1st:
36/14 (2.571)
2nd:
32/19 (1.684)
3rd:
cap 8.pmd 24/1/2007, 14:38
1