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Stihl 4 Mix Repair Manual

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    Page 1 4-MIX® Troubleshooting and Repair Before any repair work is performed on a machine, a thorough evaluation should be made to determine what parts are actually in need of replacement or maintenance. The service manuals for STIHL 4-MIX® engines outline testing procedures as well as special tools that are needed to repair the equipment. The STIHL troubleshooting video and corresponding iCademy module are ideal checklists to use when performing repairs and will assist th e technician in performing...
    Page 2 Click to download the STIHL 4-MIX® Engine Check Worksheet . ; The STIHL 4-MIX® Engine Check Worksheet is a simple guide to verify any faults found in a logical and efficient manner. ; Worksheets are available for both 2-cycle and 4-MIX® engines. ; An accurate repair cost estimate can then be prepared. Throttle Operation Verify that the throttle works smoothly, and that the throttle interlock is working correctly. ; The throttle cable should be adjusted so that the throttle is...
    Page 3 6 5 4 3 2 1 The throttle cable should always be checked for proper adjustment when a new machine is set up for delivery and anytime a machine is in for service. 4282 Series – Throttle Cable Adjustment ; If the throttle is not opening all the way on a backpack blower, performance and engine cooling will suffer. ; To adjust the throttle cable on a 4-MIX® blower, turn the small screw that is located in the throttle trigger until the proper throttle opening is achieved....
    Page 4 ; If an incorrect spark plug is installed in a BR 600, the engine may quit after it warms up, or it may run poorly. It may also try to run-on when the ignition is switched off. ; Set the gap on all STIHL spark plugs at twenty thousands of an inch. ; The final verification of a faulty ignition module may have to be done by replacing it with a known good ignition module for comparison. FS 90, FS 100, FS 110, KM 110, FC 100, FC 110, HT 100, HT 101 , HL 100 FS 130, KM 130, HT 130, HT 131 BR...
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