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3-5. Ignition System (cont.)

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3-7. Inspection/Replacement of Stop Switch

1) Remove Plug cap, and remove Spark plug with supplied Wrench 13-16.

Note: If Spark plug is wet with fuel, wipe it off with a clean cloth and

dry Spark plug with power blower.

2) Remove carbon deposits on the center electrode and the ground

electrode of Spark plug using wire brush.

3) Adjust the spark gap to 0.6-0.7mm by inserting a 0.7mm Spark plug

gauge in the spark gap. (Fig. 12)

4) Check if the spark occurs in the spark gap as described below:

Install Plug cap on Spark plug, touch the threaded portion of the plug

to the engine block, and then pull Recoil starter rope.

5) If no spark occurs, check the electrical conduction as described above

in 1) of CHECKING PLUG CAP.

And if the conduction is normal, replace Spark plug by new one and

re-check for a spark in the spark gap.

INSPECTION OF SPARK PLUG

1) Remove Top handle cover by removing four 4x18 Tapping screws.

2) Using circuit tester, check the electrical conduction between the terminals.

Stop switch is normal if the terminals are not conducted with the engine

turnded on and conducted with the engine turned off. (Fig. 10)

INSPECTION

Fig. 15

Spark gap = the distance between the center

electrode and the ground electrode

Fig. 12

0.6 - 0.7mm

Center electrode

Ground electrode

3-6. Removal/Installation of Ignition Coil Complete

1) Before removing Ignition coil complete, remove Starter case, pull Plug cap off from Spark plug and pull the ground

(earth) wire off from the terminal on Ignition coil complete. (Fig. 13)

2) Remove two M4x20 Hex socket head bolts. Now Ignition coil complete can be removed. (Fig. 14)

Note: Be careful not to lose two Spacers through which the Hex socket bolts are inserted.

REMOVAL

1) Put Spacers and Ignition coil complete in place, and pretighten M4x20 Hex socket head bolts. Do not tighten the bolts

securely in this step. Insert a 0.3mm thickness gauge between Ignition coil complete and the magnet portion of Flywheel.

Ignition coil complete will stick to the magnet portion of Flywheel. Then tighten the bolts securely.

2) Remove the thickness gauge, then turn Flywheel to make sure that Ignition coil complete does not touch Flywheel.

INSTALLATION

Fig. 14Fig. 13

Ground (earth) wireGround (earth) terminal

M4x20 Hex socket head bolt (2pcs)

Spacer

(2pcs)

Flywheel

Switch

1 2 3 4 5 6 7 8 9 10 ... 19 20

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