JAWA 250 TRAVEL Operating Instructions Manual - page 14
14
Air Filter
Clean the air filter cartridge washing in benzene and squeeze dry. Then apply a special spray-on air
filter oil, or an engine oil/petrol mix in the ratio 1:1 and squeeze out excess before refitting (Fig. 11).
3 SERVICING BATTERIES
The electrolyte level should be checked once a month. If it is below the mid-point between the upper
and lower level marks, top up with distilled water so that the level reaches the upper mark. Never refill
with acid! (Fig. 10)
The battery must be kept clean and dry, connecting cables must be protected against damage, and
the breather hose kept free from kinks.
In the event that the motorcycle had not been in use for a long period and the user notices that the
headlight is weak and the level of sound emitted by the horn is feeble the specific gravity of the
electrolyte may have decreased to the following levels:
YUASA batteries in areas with tropical or moderate climates to values lower than 1.20 kg/l
AWS battery in areas with a tropical climate to values lower than 1.18 kg/l; in areas with milder
climates to less than 1.21 kg/l.
for other types of batteries according to manufacturer's recommendations.
Recharging is appropriate if the motorcycle has not been used for more than a month. Remove
battery from the vehicle and check the volume of electrolyte. If necessary, fill the battery with distilled
water to the upper level. Optimum charging current is 0.9 A and the battery temperature during
charging should not exceed 55 degrees C.
The battery is fully charged when all the cells gas evenly and density values are no longer increasing.
Specific gravity of the electrolyte should reach values shown above after charging.
If necessary, top up the electrolyte after charging by adding distilled water. Generally, the charging
current (amps) ought to be no higher than one-tenth of battery capacity (Ah).
4th ADJUSTMENT
ADJUSTING MOTOR
TMEC type 250cc
Adjustment timing
You can check this but not adjust it, since it is a fixed setting. Checking is performed by stroboscope
while the engine is running (in approved workshop).
Adjusting the valve clearances is a high-precision operation, so it should be entrusted to a
professional JAWA service.
JAWA 250/597 Travel:
intake
valve
: 0,07mm
exhaust
valve
: 0,07mm
ATTENTION!
Proper valve adjustment will affect the performance and reliability of the engine. Therefore, we
recommend setting valves for the first time after 500 km and then after 6,000 km.
Adjusting the carburettor
These carburettors have two components that can be adjusted and they are the following:
1
st
: the idle screw on the right-hand side of the motorcycle (see Figure 8)
2
nd
: the choke (the engine cold start device) which is located on the left handlebar (Fig. 9).