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does not move or move it slightly, indicating that the timer switch is broken. As shown in Figure 6 split out timer fire selector assembly, open the shell, S4 observed dynamic and static contact mild ablation. Sanding with fine sandpaper to smooth the contact, then alcohol wipe clean with sharp tweezers move the contacts to the stationary contacts gently twist it, increase dynamic and static contact contact pressure, the contact resistance is detected with a multimeter 0Ω, description switch has been repaired, can be put into use. If the switch is badly damaged
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