55
English
11.4.7 Checking and replacing spark plugs
The engines available for this type of shredder are two-cylinder engines. This means that there
are two spark plugs. These can be found on the cylinder head.
The spark plug is a crucial part that will also determine the correct combustion in the engine.
Check the spark plug every 50 working hours.
Note:
Also read the engine manual.
The prescribed spark plugs by the manufacturer of the engine are:
B&S Vanguard:
CHAMPION XC92YC
Honda GX670:
NGK ZGR5A
• Switch the engine off and allow
it to cool for a while. Remove the key
from the ignition.
• Disconnect the two spark plug
caps from the spark plugs.
• Clean the area around the spark plug and
remove the spark plug from the cylinder
head. (A/F 13/16”)
• Use feeler gauges to check whether the
gap between the plug electrodes is 0.8 mm.
• If required, carefully bend the ground
electrode until the correct gap has been obtained.
• If the spark plug is wet or oil fouled, renew it.
• Replace the spark plugs every 200 working hours.
Caution:
Refi tting an used or a new spark plug must be effected with great
care to ensure that the cylinder head thread is not damaged.
• Torque the spark plug to 20 Nm.
0,8 mm