User manual TECUMSEH AV520 QUICK REFERENCE

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Manual abstract: user guide TECUMSEH AV520QUICK REFERENCE

Detailed instructions for use are in the User's Guide.

[. . . ] Tecumseh Quick Reference Service Information Covers Engine and Transmission Product Form No. 695933 R 7/00 Introduction This booklet contains the quick reference and basic troubleshooting information previously found on Tecumseh wall charts and in the Technician's Handbooks. This booklet is designed to be used as a work bench quick reference guide when servicing Tecumseh engines and motion drive systems. Technician's Note: Tecumseh engines are manufactured to meet EPA and CARB standards. As a technician, it is unlawful to re-calibrate or replace a fuel nozzle or jet (bowl nut) with a part from any other carburetor that was not originally designed for that engine. All speed adjustments must remain within the limits that are specified for each engine and are not to exceed the maximum. [. . . ] If the alternator puts out the minimum A. C. voltage, replace the diode. 3 Amp D. C. Alternator System - Rectifier Panel This 3 amp system is readily identified by the rectifier panel in the circuit. The panel includes two diodes and a fuse for overload protection. The rectifier panel does not regulate the output of this system. CHECKING THE SYSTEM: Check the fuse to determine if it is good. A continuity light or ohmmeter can detect a faulty fuse. Replace with a six (6) amp fuse if necessary. Determine if the diodes are functioning properly. A continuity light may be used to check diodes (diag. When replacing the diode in the rectifier panel, locate the undercut on one end of the diode and match it to the detent on terminal clip of the rectifier panel. output of the rectifier panel as follows: Disconnect the battery lead from the terminal of the rectifier panel. voltmeter probe on the + battery terminal (diag. Connect negative lead to engine ground. Green - + 74 Minimum values should read: 2500 R. P. M. If these minimum readings are noted, the system is okay. Check for bad battery, ammeter, wiring, etc. If reading is less, proceed to make an A. C. With the battery lead disconnected from rectifier panel, probe the A. C. terminals with the voltmeter on the A. C. VOLTMETER Yellow Yellow FUSE PROBE + TO ENGINE GROUND - 75 (Continued on Next Page) 40 Minimum values should read: 2500 R. P. M. If less than above output, generating coil assembly is defective. NOTE: If there is no regulator in this system. [. . . ] 4) Washer Retainer Washer Brake Spring Starter Dog Dog Spring TYPE I 1 2 3 4 590740 590616 590617 590760 TYPE II Retainer Starter Dog Dog Spring Locking Tab 8 7 7 6 4 3 5 2 1 5 2 1 6 4 3 7 7 6 2 5 3 4 1 6 1 2 3 4 5 6 7 590599A 590600 590679 590601 590678 590680 590412 Spring Pin (Incl. 4) Washer Retainer Washer Brake Spring Starter Dog Dog Spring 1 2 3 4 5 6 7 590599A 590600 590696 590601 590697 590698 590699 Spring Pin (Incl. 4) Washer Retainer Washer Brake Spring Starter Dog Dog Spring 1 2 3 4 5 6 7 8 590409A 590755 590754 590753 590482 590680 590412 590757 Center Screw Washer Washer Washer Brake Spring Starter Dog Dog Spring Pulley 65 Tecumseh Flywheel Key Quick Reference Identification Chart Keys are drawn to full scale. 29410009 Steel 32589 Steel 611191 Steel 8446 Steel 650455 Steel 611054 Steel 610995 Steel 650496 Steel 610951 Steel 610961 Aluminum Alloy 30884 Steel 27902 Aluminum Alloy 611154 Aluminum Alloy 650592 Aluminum Alloy 611004 Aluminum Alloy 611107 Aluminum Alloy Crankshaft Timing Tabs 611014A Point Ignition Crankshaft Timing Tabs 611032 Solid State Ignition 66 Primer Bulb Identification Caution must be used when replacing carburetor primer bulbs. Using the wrong primer bulb could cause hard starting and operating problems. [. . . ]

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