Webb 1938185001, Original Instructions Manual

An air filter in poor condition will reduce
the performance and life of the engine
while making it harder to start. 
Regular checks are therefore essential,
especially when using the mower in dusty 
conditions. Check and clean the  air filter 
every 25 hours of use or more often if 
the engine is used in a dusty 
environment.

Clean the cover and inside of the air filter
box with a clean lint-free cloth. Apply a
uniform layer of oil to the outside of the
cartridge filter with a brush (you can use
clean engine oil). Insert the filter cartridge
into its housing and replace the filter lid,
ensuring that each component is in place
and properly installed.  If the filter cartridge
is damaged or is very dirty, replace it using
a genuine part.

The first oil change should be carried out
after the first 5 hours of mower use. 
Thereafter, change the oil after every 25
hours use or at least once a year. 
Leave the engine running outdoors for
several minutes to warm the oil and
make it more fluid. 

To adjust the tension of the cable
trasmission, increase or reduce the 
length of adjustment device using
the spanner 

(fig. 19)

. Check the

effectiveness of the transmission and 
resistance of the lever. 

Once a proper adjustment has been
reached, secure the adjustment device
by tightening the lock nuts. 

If the transmisison cable is too tight,
it will be difficult to move the drive
lever towards the handlebars. 
Conversely, if the transmission cable is
not tight enough, the transmission will
function poorly and lack power.

In its transmission-engaged position
(fig. 18), the mower’s brake lever is
pushed fully towards the handlebar.
An incorrectly-adjusted transmission
cable can cause premature wear to the
mower’s drive system.

Remove the spark plug cap and
unscrew the oil level dipstick. 
Place a suitable container beneath the
mower’s oil filler pipe and tilt the mower
onto its side with the air filter and
carburettor uppermost. 
Allow the oil to drain completely into
the container. Return the mower
onto its four wheels and fill the
engine with new oil.

The oil level should be between the
minimum and maximum oil level marks
on the dipstick 

(fig.21)

.  Add oil if

necessary and repeat the above
checking process. Running the engine
without oil or with too little oil can
cause serious engine damage.

Position the mower on a firm, level
surface. Unscrew the oil level dipstick
(fig.20) and wipe dry. Insert the dipstick
until it reaches  the filler neck, but do not
screw in. Remove the dipstick and check
the oil level holding the dipstick horizontal. 

Remove the air filter cover lid and carefully
remove the foam filter cartridge. 
Clean the cartridge in a small bowl of
warm water containing a few drops of 
washing-up liquid until it is perfectly clean
and free from all traces of grease and dust.
Rinse the filter cartridge in clean water and
then squeeze gently to remove most of the
water. Let it air dry until it is completely dry.

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INSTRUCTION MANUAL