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the carburettor.
4. Clean the paper filter as follows: Knock it light-
ly against a flat surface. If the filter is very dirty,
change it.
5. Assemble in the reverse order.
Petroleum-based solvents such as kerosene must
not be used for cleaning the paper filter as these
can destroy the filter.
Do not use compressed air for cleaning the paper
filter. The paper filter must not be oiled.
COOLING AIR INTAKE
The engine is air-cooled. A blocked cooling sys-
tem can damage the engine. The engine should be
cleaned at least once a year or every 100 hours run-
ning.
Remove the fan casing. Clean the cooling fins on
the cylinder, the fan and the rotating protective
grille (fig 18). Glean more frequently if mowing
dry grass.
SPARKING PLUG
An oily and sooty sparking plug with burnt elec-
trodes makes the engine difficult to start.
Clean the plug with a wire brush (do not sand-
blast) and reset the spark gap to 0.75 mm.
Replace the sparking plug if the electrodes are bad-
ly burnt. For replacing a sparking plug, a sparking
plug sleeve AC and torsion pin AD are provided in
the plastic bag containing accessories.
The engine manufacturer recommends: Champion
J19LM.
CARBURETTOR
The carburettor is positioned at the factory and ad-
justment should not be necessary.
If the carburettor after all has to be adjusted, con-
tact a service station.
ADJUSTING POWER TAKE - OFF
If the v-belt on the double belt pulley slips when
the power take-off is engaged it can be tensioned
by screwing in the nut K on the power take-off rod
(fig 19).
CHANGING DRIVE BELTS
Always use genuine belts. They fit exactly and last
longest.
When changing a v-belt, lift up one side of the ma-
chine (with carburettor upwards) and place a crate
or similar under the front wheel. Do not forget to
block the other front wheel so that the machine
cannot roll. Turn the rear wheels to the slewed po-
sition.
N.B. If the machine has to be tilted more than 45°
the battery must be removed.
DRIVE BELT ENGINE - DOUBLE BELT
PULLEY
1. Loosen the belt yoke L on the engine belt pulley
and turn it aside (fig 20).
2. Loosen and remove the belt guide M on the dou-
ble belt pulley.
3. Loosen and remove the belt guide N on the pow-
er take-off tensioning roller.
4. Remove the v-belt.
5. Place on the new v-belt and assemble in the re-
verse order.
6. The belt yoke L on the engine belt pulley should
be 3 - 5 mm from the v-belt when the belt is ten-
sioned.
DRIVE BELT ENGINE - TRANSMISSION
1. Loosen the belt yoke L on the engine belt pulley
and turn it aside (fig 20).
2. Lift off the lower v-belt.
3. Loosen the tensioning roller O on the clutch
arm.
4. Remove the v-belt.
5. Place on the new v-belt and assemble it in the re-
verse order. Fitting is facilitated if the pedal is
pressed down.
6. Adjust the clutch rod (se “Adjusting clutch”).
7. The belt yoke L on the engine belt pulley should
be 3 - 5 mm from the v-belt (lower) when the belt
is tensioned.
ADJUSTING CHAIN
Classic - 2000 - Senator:
If the chain is too slack it can be tensioned by
screwing down the nut P on the turnbuckle. Do not
tension the chain too hard (fig 21A).
President:
If the chain is too slack, it can be tensioned by un-
doing the bolt P. Push the chainwheel downwards
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