Yamaha SR400 Owner's Manual page 54

Periodic maintenance and adjustment
Tire air pressure (measured on cold
tires):
Up to 90 kg (198 lb) load:
Front:
1
175 kPa (1.75 kgf/cm
Rear:
200 kPa (2.00 kgf/cm
90 kg (198 lb) to maximum load:
2
Front:
200 kPa (2.00 kgf/cm
Rear:
3
225 kPa (2.25 kgf/cm
Maximum load*:
150 kg (331 lb)
4
* Total weight of rider, passenger, car-
go and accessories
5
WARNING
Never overload your vehicle. Opera-
tion of an overloaded vehicle could
6
cause an accident.
7
Tire inspection
8
9
10
1. Tire sidewall
11
2. Tire tread depth
The tires must be checked before each
12
ride. If the center tread depth reaches
the specified limit, if the tire has a nail or
glass fragments in it, or if the sidewall is
13
cracked, have a Yamaha dealer re-
place the tire immediately.
14
Minimum tire tread depth (front and
rear):
2
, 25 psi)
TIP
The tire tread depth limit may differ
2
, 29 psi)
from country to country. Always comply
with the local regulations.
2
, 29 psi)
2
, 33 psi)
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EWA10512
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Tire information
This model is equipped with tube tires.
Tires age, even if they have not been
used or have only been used occasion-
ally. Cracking of the tread and sidewall
rubber, sometimes accompanied by
carcass deformation, is an evidence of
6-16
1.6 mm (0.06 in)
WARNING
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the mo-
torcycle with excessively worn
tires decreases riding stability
and can lead to loss of control.
The replacement of all wheel-
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience.
It is not recommended to patch
a punctured tube. If unavoid-
able, however, patch the tube
very carefully and replace it as
soon as possible with a high-
quality product.
Ride at moderate speeds after
changing a tire since the tire
surface must first be "broken
in" for it to develop its optimal
characteristics.
EWA10572