TROUBLESHOOTING AND ELECTRICAL SYSTEM: 850 GAS
Test Procedures
2007-2008 XRT 800, 810 and 850 Maintenance and Service Manual
Page 12-21
12
4. This test will find most bad RPM Limiters. Some of them may bench test okay but fail under a load due
to heat while operating. Another method of testing is to replace the RPM Limiter and then run the engine.
If the engine runs properly, keep the new RPM Limiter in the circuit.
TEST PROCEDURE 15 – IGNITION COIL
See General Warning on page 1-1.
The following test procedures will properly detect a coil that has failed in most cases; however, in rare cases,
some ignition coils can fail to operate at normal (warmer) operating temperatures. If the ignition coil has tested
okay in the vehicle and on the bench, but fails to operate reliably, replace the coil with a known good coil and
operate the engine for several minutes to ensure that the coil functions at normal operating temperature. If the
new coil functions properly, keep the new coil in the circuit.
Test Procedure 15A – Ignition Coil – In Vehicle Test
1. Disconnect the battery cables as instructed.
See WARNING “To avoid unintentionally starting...” in
General Warning on page 1-2.
2. Using a multimeter set to 200 ohms, measure the primary coil resistance.
2.1. Disconnect both of the bullet terminals at the RPM limiter
(Figure 12-18, Page 12-21)
. Place the
red (+) probe of the meter on the male bullet terminal of the wire connecting to the ignition coil under
the fan housing, and place the black (–) probe on a clean unpainted surface of the engine or frame
(Figure 12-19, Page 12-22)
.
2.2. If the resistance is not between 0.6 - 1.7 ohms, bench test the ignition coil.
See Test Procedure
15B – Ignition Coil – Bench Test on page 12-25.
Figure 12-18 RPM Limiter
1. Brown Wire 2. Black Wire 3. Female Bullet Terminal 4. White/Black Kill Circuit Wire 5. Ignition Coil Black Wire
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1
2
4
3
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