BTS 630, 635 10 Maintenance
Operator's manual 57
10.3.6 Checking/cleaning/replacing the spark plug
Performing preparations
1. Switch off the engine.
2. Let the machine cool off.
Removing the spark plug
1. Unscrew and remove the air cleaner cap.
2. Clean the air cleaner housing and the area around the spark plug thoroughly.
3. Pull off the spark plug cap from the spark plug.
Note: Do not pull the spark plug cap off the spark plug by the ignition cable.
4. Loosen the spark plug with a combination wrench.
5. Unscrew the spark plug manually.
CAUTION
Touching a hot spark plug can cause burns.
f Only remove the spark plug when the engine has cooled down.
Item Designation
1 Air cleaner cap
2 Spark plug cap
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