Clarke 3402120, Operating & Maintenance Instructions

Page: 14 / 24

14
Adjustments
When the control lever is released, the engine will stop. The engine will only run with the Control
Lever held against the main handle. All carburettor adjustments are factory set and will not need
adjustment.
Storage
If the lawnmower is stored for longer than 30 days, the fuel tank and carburettor should be
drained to avoid the possibility of clogging up from fuel deposits. Ensure the engine is run until it
stops for lack of fuel.
If gasoline additive is used, ensure the engine is run in order to distribute the additive to all parts
of the fuel system, before storage. The lawnmower may then be stored for up to 24 months.
(Additive available from your Clarke dealer).
Replacing the Drive Belt (CLM20SP Machines Only)
The self-propulsion system of the CLM20SP lawnmower incorporates a drive belt which may,
after extensive use, require replacement. (Part numbers refer to the diagram on page 19).
1. Drain any remaining petrol from the lawnmower as described on page 13.
2. Turn the machine over and remove the cutting
blade (17) and blade boss (16) as described
on page 13.
3. Remove the two screws holding the plastic
drive cowling (15) and lift off the cowling.
Remove and discard the broken drive belt.
4. Undo and remove the two small bolts holding
the gearbox steady brack
et (56) to the
machine chassis and remove the bracket.
5. Tilt the axle assembly forward and loop the
replacement drivebelt (28) over the drive
pulley on the axle assembly.
6. Loop the other end of the belt around the drive
pulley (14) below the engine as shown in Fig
11.
7. Swing the axle assembly back to its original
position and replace the gearbox steady
bracket with its two retaining bolts. Only gentle
belt tension is required and this will be
achieved by this operation.
8. If greater belt tension is required due to
slippage of the belt, this can be achieved by
loosening the locknut and tightening the
adjusting bolt in the
steady bracket (56) as
shown in Fig 12.
9. Replace the plastic drive cowling before re-
fitting the cutting blade and blade boss as described on page 13.
Fig. 11
Fig. 12