Chapter 3 – Maintenance
Service manual AJP PR3/PR4 3 - 12
! WARNING !
If the air filter is not installed properly, dust
and dirt can enter the engine and cause
premature wear on the piston, cylinder and
valves.
Tightening torque: 12N.m (1.2Kgf.m)
Note:
If the bike is used regularly in areas of
high humidity or dusty, the procedures for
cleaning the air filter and the respective box
must be performed more frequently.
FUEL SUPPLY SYSTEM
Fuel
The PR3/PR4 models only consume
unleaded gasoline with a minimum of 95
octanes. Never use leaded petrol to avoid
destroy the catalyst and the exhaust system
of the motorcycle.
If the motorcycle remains immobilized or
stored for more than a month, drain the vat
float. Leave gasoline on the carburetor vat
without the motorcycle being used for long
periods of time, may cause obstruction of
jets, resulting in difficulties to put the engine
running or inadequate handling of the vehicle.
When the bike is washed, avoid direct
pressure water jets directly to the breather in
the cap of the fuel tank.
Fuel filter
The fuel filter is transparent, this allows to
see the presence of impurities inside. Always
replace the fuel filter at the intervals specified
in the Maintenance Schedule or more often if
necessary.
The fuel filter (1) is assembled between the
right frame beam and the carburetor, under
the seat.
It must be replaced whenever it is observed
the existence of dirt on the inside, because
the accumulation of any dirt can damage the
pump, restrict or block the flow of fuel
causing loss of power and engine
malfunction.
Fuel filler cap
Frequently inspect the correct operation of
the existing breather valve in the cap of the
fuel tank.
The air shall pass in one direction only, from
outside to inside.
Shaking the cap should be audible the ball
movement inside the breather valve.
