CP7605 OPERATING INSTRUCTIONS Dwell/Tach/Voltmeter FOR 12 VOLT ELECTRONIC OR CONVENTIONAL IGNITION SYSTEMS • OPERATING INSTRUCTIONS • SAFETY RULES • TUNE-UP PROCEDURES • REPAIR PARTS
SAFETY GUIDELINES TO PREVENT ACCIDENTS THAT COULD RESULT IN SERIOUS INJURY AND/OR DAMAGE TO YOUR VEHICLE OR TEST EQUIPMENT, CAREFULLY FOLLOW THESE SAFETY RULES AND TEST PROCEDURES SAFETY EQUIPMENT Fire Extinguisher Never work on your car without having a suitable fire extinguisher handy. A 5-lb or larger CO2 or dry chemical unit specified for gasoline/chemical/electrical fires is recommended. Fireproof Container Rags and flammable liquids should be stored only in fireproof, closed metal containers.
ACCESSORIES FUNCTIONS, CONNECTIONS AND ACCESSORIES Fig. 3 See Figure 2. of the instrument. DESCRIPTION The Model CP7605 Dwell/Tach/Voltmeter has a clearly labeled function switch and meter as shown in the Master Hookup diagram, Figure 1 below. 1. METER This meter displays the following scales: • Volts 0-16 • RPM 0-2000 (8 cylinder) 0-4000(4cylinder – multiply 3.
Fig. 6 Fig. 9 Primary Tach Connection — GREEN Clip Primary Tach Connection — GREEN Clip 2. BLACK CLIP – Connect to Vehicle Ground. SPADE TERMINAL ADAPTER GREEN CLIP GREEN CLIP BASIC SYSTEM CHECK – Charging Voltage 1. GREEN CLIP – Connect to the Positive (+) Battery terminal. 3. FUNCTION SELECTOR – Volts 4. Start engine and allow it to warm up completely. Operate it at curb idle. 5. With all accessories off observe the 16 volt scale on the analyzer. 6. Normal Result – 13.2 to 15.
scribed under DWELL/TACH/BREAKER POINT RESISTANCE MEASUREMENTS Start the engine and allow it to warm up (upper radiator hose hot.) NOTE: When testing a vehicle with dual points, alternately block one set of points open with a piece of insulating material while the other set is being tested. Operate the engine at curb idle OR the RPM specified by the vehicle emission control label or the vehicle service manual for measuring dwell. 5. Turn the ignition key ON. If the meter reads voltage, (12.5 - 13.
procedures in your vehicle service manual require the engine to run at a specific RPM during the test. Your instrument provides excellent monitoring capabilities for this purpose. Model CP7605 Replacement Parts Key No. Part No. 1 2 3 4 5 6 7 8 9 — 400-857 270-117 38-726 450-133 180-300 38-1342 1-1086 1-1085 400-855 2-219301 Description Case, bottom Screw, Case self-tap.
