Table of Contents Paragraph Page No. SAFETY PRECAUTIONS .............................................................. 1 GENERAL INFORMATION ........................................................... 2 ABOUT THE TIMING LIGHT ............................................................................ OPERATING SPECIFICATIONS ....................................................................... 2 5 OPERATION ..................................................................................
Safety Precautions Always observe safety precautions whenever working on a vehicle. DO NOT wear loose clothing, watches, rings or other jewelry when working on a vehicle. Always wear safety eye protection. Only work on a vehicle in a well-ventilated area. Put transmission in “park” (for automatic) or “neutral” (for manual). Set parking brake. Put blocks on drive wheels. Avoid moving fan blades or any potentially moving parts.
General Information ABOUT THE TIMING LIGHT This timing light is designed for use with all 12-volt negative-ground vehicles. The timing light may also be used on vehicles equipped with DIS (distributorless ignition systems). Operating Controls and Indicators — General (see Figure 1) 3 L F TA GI TACH T CE LIGIMIN • DW H G ELL•A DVAN T DW EL L DI ER CY LIND 2 + AD VA T NC E - A C H 4 1 Figure 1. Operating Controls and Indicators 1.
General Information 2 5 7 6 10 3 10 1 14 15 19 16 13 4 9 11 BATTERY VOLTAGE MODE 15 ADVANCE MODE 16 17 18 13 8 12 4 VOLTAGE/RPM MODE DWELL MODE Figure 2.
General Information 3. Function (F) Switch — Selects timing light operating mode (voltage/rpm, advance or dwell). 4. RPM Indicator — Displays when 2-cycle (DIS) or 4-cycle rpm mode is selected. 5. Cylinder/Advance Increment Switch 6. ■ Dwell Mode — Increments through available cylinder settings for dwell check. Enabled when dwell mode is selected. ■ Advance Mode — Increments through degrees of advance. Enabled when advance mode is selected.
General Information OPERATING SPECIFICATIONS ■ Power Requirements: 10 to 16 volts DC ■ Operating Temperature: 32 to 122°F (0 to 50°C) ■ Tachometer Range: 240 to 9,990 RPM ■ Timing Advance Range: 0 to +90° Operation APPLICATIONS This timing light is designed for use on most late model import or domestic vehicles equipped with conventional or electronic ignition systems, or with DIS (distributorless ignition systems).
Operation b. When the engine is started, the timing light enters the voltage/rpm mode; the Charging System Battery VOLTS indicator, Volts symbol and Ignition Mode symbol (either 2-cycle (DIS) or 4-cycle) will display. The LCD display will show charging system voltage and engine rpm. CHECKING DWELL ANGLE Dwell angle check is performed for vehicles equipped with conventional or electronic ignition systems. • a. b. Make sure timing light is properly connected as described in TIMING LIGHT CONNECTION.
Operation ■ Press Function (F) switch as needed to select voltage/rpm mode. The RPM Indicator will display when voltage/rpm mode is selected. The LCD display will show engine rpm. Adjust engine rpm as necessary. b. Adjust timing light barrel, as needed, to ensure proper illumination of timing marks. c. Refer to the vehicle's service manual to check and adjust timing. OBSERVE ALL SAFETY PRECAUTIONS. d. Press Flash switch. Timing light will stop flashing. e.
Operation d. With timing light directed at timing marks, press Cylinder/Advance Increment switch as needed to realign timing marks to initial timing or as instructed by manufacturer's specifications. Note degrees advance on LCD display and compare with manufacturer's specifications. e. Turn off ignition and disconnect timing light from engine. Vacuum Advance • Make sure timing light is properly connected as described in TIMING LIGHT CONNECTION. • Make sure initial timing is correct.
Operation TIMING ADJUSTMENT Refer to the vehicle’s service manual for procedures to adjust timing. DO NOT ATTEMPT TO ADJUST TIMING WITHOUT MANUFACTURER’S SPECIFICATIONS. TROUBLESHOOTING NOTE: If the timing light readout becomes inoperative or locks up during use, disconnect and reconnect the timing light's positive battery clamp from the battery to reset the unit. If the timing light fails to operate, make the following checks: a.
Warranty and Service LIMITED ONE YEAR WARRANTY The Manufacturer warrants to the original purchaser that this unit is free of defects in materials and workmanship under normal use and maintenance for a period of one (1) year from the date of original purchase. If the unit fails within the one (1) year period, it will be repaired or replaced, at the Manufacturer's option, at no charge, when returned prepaid to the Service Center with Proof of Purchase. The sales receipt may be used for this purpose.
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