A Apply a thin coat of anti-seize compound to the spark plug threads

Refitting

Use a spark plug socket with a long extension to unscrew the spark plug

illustration). Recover the dust seal (wherefitted).

13 If compressed air is available, blow any dirt or foreign material away from the spark plug area before proceeding (a common bicycle pump will also work).

14 Remove the spark plug. Examination of the spark plugs will give a good indication of the condition of the engine. If the insulator nose of the spark plug is clean and white, with no deposits, this is indicative of a weak mixture or too hot a plug (a hot plug transfers heat away from the electrode slowly, a cold plug transfers heat away quickly).

15 If the tip and insulator nose are covered with hard black-looking deposits, then this is indicative that the mixture is too rich. Should the plug be black and oily, then it is likely that the engine is fairly worn, as well as the mixture being too rich. If the insulator nose is covered with light tan to greyish-brown deposits, then the mixture is correct and it is likely that the engine is in good condition.

16 Prior to installation, it's a good idea to coat the spark plug threads with anti-seize compound (see illustration). Also, it's often difficult to insert spark plugs into their holes without cross-threading them. To avoid this possibility, fit a short piece of 8 mm internal diameter rubber hose over the end of the spark plug (see illustration). The flexible hose acts as a universal joint to help align the plug with the plug hole. Should the plug begin to cross-thread, the hose will slip on the spark

22.10a Prise out the fasteners at the rear	22.10b... then lift the cover from place	22.12 Undo the screw (arrowed) and lift
of the plastic cover...		out the ignition coil

1•18 Maintenance procedures

plug, preventing thread damage. Tighten the plug to the torque listed in this Chapter's Specifications.

Дата добавления: 2014-12-23