
TROUBLESHOOTING AND ELECTRICAL SYSTEM: 850 GAS
Test Procedures
2007-2008 XRT 800, 810 and 850 Maintenance and Service Manual
Page 12-23
12
3. Using a multimeter set to 20k ohms, measure the resistance of the secondary coil and spark plug cap
together.
3.1. Place the red (+) probe of the meter into the end of the spark plug cap that normally connects to
the spark plug and place the black (–) probe on a clean unpainted surface of the engine or frame
(Figure 12-20, Page 12-22)
.
3.2. If the resistance is between 12.0k - 14.0k ohms, the secondary coil and spark plug cap are within
acceptable limits; proceed to step 6 on page 12-25. If the resistance is not between 12.0k - 14.0k
ohms, the spark plug cap and secondary coil must be tested independently from each other.
4. Test the spark plug cap separately from the secondary coil.
4.1. Remove the rubber gasket (1) on the plug cap (2) by rolling back the gasket onto the spark plug wire
(3)
(Figure 12-21, Page 12-23)
.
4.2. Remove the cap from the wire by turning the cap counterclockwise three or four revolutions while
gently pulling it off the wire
(Figure 12-22, Page 12-23)
.
4.3. Using a multimeter set to 20k ohms, place the red (+) probe of the multimeter into the end of the
spark plug cap that normally connects to the spark plug and place the black (–) probe into the end
of the cap with the internal screw
(Figure 12-23, Page 12-24)
. If the resistance is not between 4.5k
- 6.0k ohms, the cap has failed and must be replaced. Proceed to the next step with the spark plug
cap still removed.
Figure 12-21 Ignition Coil and Cap
Figure 12-22 Spark Plug Cap Removal
CAP
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4
3
1
2
5
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