FIG. 142

3. If you still do not get a good spark, remove the spark plug cap, check it for corrosion, and reinstall it, making sure it has good contact with the stranded metal wire in the center of the plug wire. Check for spark again.

4. If you still do not get a good spark, remove the gas tank and check the high voltage coil mounting bracket for sufficient grounding. Remove its two 10 mm nuts and bolts and scrape any paint or rust from both the frame mounting lug and the bracket on the coil. Use a wire brush or file if necessary. Replace the coil, using Loctite on the threads of the 10 mm bolts. Check the connectors on the blue and black leads for corrosion or moisture and reinstall them on their proper terminals, being sure they are a tight fit. Again check for spark.

5. If you still do not get a good spark, and your OSSA is fitted with an ignition switch, disconnect the blue wire on the back of the

FIG. 143

switch and support the end of it so it cannot touch any metal surfaces. Again try for spark. If you now get an acceptable spark, replace the ignition switch.

6. If you still do not get a good spark, several tests will need to be made with an ohmmeter.

7. First, disconnect the black and blue leads from the high voltage coil. Put one lead of the ohmmeter on one of the terminals of the coil and the other lead on the other terminal. (Fig. 143) Read the meter. Now reverse the leads. If either test showed lower than 16 ohms or more than 38 ohms, replace the coil.

8. Clip one of the leads of the ohmmeter to the blue wire coming from the magneto stator and the other lead to the black wire. (Fig. 144) Read the meter; then reverse the leads of the ohmmeter. On the Stiletto, TT and DMR, the reading in either direction should be no

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