This sensor was designed specifically for non-contact detection of Harley® timing marks. It is installed into the motor's timing port by simply screwing the sensor into the port until it reaches the flywheel and then turning back1/4 turn and locking it into place. A .0125 inch air gap remains between the sensor and the flywheel. A strong electrical pulse is generated when the timing mark passes the center of the sensor which provides for incredible accuracy in setting ignition timing. The electrical pulse is fed into the Time Keeper which automatically determines which mark should be used for timing purposes and eliminates all other marks. The sensor is extremely rugged and is not affected by oil or heat and has no moving parts
Step 1. Install sensor
Step 2. Plug cable into sensor
Step 3. Attach inductive pickup to plug wire
Step 4. Plug sensor cables into the Time Keeper
Step 5. Start engine and follow timing instructions for your motor...

1980 and earlier
Timing is set using the full advance mark.
1. Run motor at specified RPM (see your Harley® owners manual)
2. Turn the Time Keeper™ degree dial to zero and adjust the ignition timing so the green light is flashing. (this indicates timing is set to the Full Advance timing mark)
Note: Time Keeper™ operating instructions explain in detail how to advance or retard timing from the full advance mark...

1981 and Later
Timing is set using the top dead center mark.
1. Run motor at specified RPM (see your Harley® owners manual)
2. Turn the Time Keeper™ degree dial until the green light is flashing (this indicates the number of degrees the ignition is firing BTDC)
3. If the ignition timing is not correct...set the degree dial to the desired setting and adjust the timing so the green light is flashing.

Tech Tips
Feel free to email or fax your tech tips to Phantom Cycle Inc

Checking Ignition Timing on the advance curve:
We suggest you also check the timing at full advance rpm with the VOES disabled and then with the VOES enabled.
1.) Clamp off or disconnect the VOES hose (motor not running)
2.) Start motor and measure the advance degrees at full advance rpm (refer to specs).
3.) Unclamp or reconnect the VOES hose with motor still running and remeasure advance degrees at full advance rpm.
If the measured degrees does not change from step2 to step3 then the VOES is not working properly. Follow H-D manual for VOES electrical test. Motors with pre-Timken main bearing: The timing sensor should be installed with the motorcycle leaning on its kickstand and the timing checked in this position. Otherwise damage may occur to the sensor. Timing Mark: If you have an aftermarket flywheel which has an insignificant timing mark, there is a drill kit available from Phantom Cycle Inc which allows you to easily create a timing mark within minutes, and there's no need to disassemble the motor. If your motor is currently disassembled, you can machine a timing mark prior to motor assembly. A stock Harley® TDC line is approximately .060 wide and .060 deep. The Time Keeper sensor will easily detect this mark.
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Commonized Crankshaft:
In 1981 the stock crankshaft was changed to what is known as the commonized crankshaft. The timing marks were also changed to a dot at the advanced location and a line at TDC. This is also found in some late 1980 motors. Note: (1980 and 1981 motors are shovel heads.)
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Early Delkron case sensors:
Early Delkron case motors use a timing plug that is 1/2 inch and 13 threads per inch. The sensor is screwed in until it contacts the flywheel and is backed out 1/6 of a turn. We have sensors available for the early Delkron case timing ports. Please contact Phantom Cycle Inc