Craftsman 351.214300 - Manual (Page 13)

TROUBLESHOOTING (CONTINUED)
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Motor running too hot 1. Blade tension too great
2. Blade too coarse for work
(typical when cutting pipe)
3. Blade too fine for work (typical
when cutting slick or soft material)
4. Excessive dirt and chips
1. Reduce tension on blade
2. Use blade with finer teeth
3. Use blade with coarser teeth
4. Clean thoroughly; vacuum motor and speed
change mechanism
Saw will not start 1 . Key switch not on
2 . Not plugged in
3. Loose electrical connections
4. Thermal overload relay tripped
5. Fuse blown
1 . Tu rn key to on
2 . Plug into supply
3. Have qualified electrician check electrical
connections
4. Reset relay, see “Grounding Instructions’’
5. Check and replace fuse
Speed difficult adjust 1 . Motor not running
2 . Worn/Broken V-belt(s)
1 . Turn saw on
2 . Check/Replace V-belts for Repair Part,
See Figure 17.
Blade does not heat
up when weld button
is pressed 1. No power to welder
2. Weld pressure adjustment not reset
3. Weld pressure adjustment set to “0”
4. Blade or jaws dirty, rusty or oily
5. Loose connection to weld switch,
limit switch, transformer,
or welder jaws
6 . Burnt transformer
1. Check power at receptacle
2. Adjust weld pressure properly
3. Adjust weld pressure properly
4. Clean blade and jaws
5. Check; tighten if necessary
6 . Replace
Misaligned weld 1. Dirt or scale on jaws or blades
2. Blade ends not cut square
3. Blade ends not correctly
aligned when clamped in jaws
4. Worn jaws
1. Clean jaws and blades
2. Cut ends square
3. Clamp blades against jaw alignment surface
4. Replace
Blade ends overlap 1. Improper weld pressure
2. Blade ends aligned incorrectly
1. Reduce weld pressure
2. Align blades properly
Incomplete weld 1 . Weld pressure adjusted incorrectly
2 . Improper clamping
3. Defective limit switch
4. Movable jaw sticking
1 . See “Blade Welding”
2 . See “Mounting Blade”
3. Replace
4. Clean and oil jaw dovetails on inside
of cabinet
Weld breaks when used 1 . Weld not annealed correctly
2. Weld ground too thin
3. Incomplete weld
1. See “Blade Annealing”
2 . Grind weld to thickness of blade
3. See Incomplete Weld section (above)
Blade melts when welding 1. Weld pressure adjusted incorrectly
2. Inaccurate moveable jaw retraction
3. Movable jaw sticking
1. Increase weld pressure
2. Allow sufficient time for tool to cool down;
see “Blade Welding”
3. Clean and oil jaw dovetails on inside
of cabinet
Brittle welds 1. Weld not annealed correctly
2. Dirt, oil or flash on blade or jaws
1. See “Blade Annealing”
2. Clean blade and jaws
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