Grizzly G0641 owner manual Miter Saw Operations

Motor & Electrical (continued)

Symptom	Possible Cause		Possible Solution
Machine has vibra-	1.	Motor or component is loose.	1.	Inspect/replace stripped or damaged
tion or noisy opera-				bolts/nuts, and re-tighten with thread locking fluid.
tion.	2.	Blade is at fault.	2.	Tighten arbor bolt; replace warped, bent, or twisted
				blade; resharpen dull blade.
	3.	V-belts worn or loose.	3.	Inspect/replace V-belts with a new matched set
				(Page 29).
	4.	Pulley is loose.	4.	Re-align/replace shaft, pulley, setscrew, and key as
				required.
	5.	Motor mount loose/broken.	5.	Tighten/replace.
	6.	Machine is incorrectly mounted or sits	6.	Tighten/replace anchor studs in floor; relocate/shim
		unevenly.		machine.
	7.	Arbor pulley is loose.	7.	Re-tighten/replace arbor pulley with shaft and thread
				locking liquid.
	8.	Motor fan is rubbing on fan cover.	8.	Replace dented fan cover; replace loose/damaged
				fan.
	9.	Arbor bearings are at fault.	9.	Replace arbor housing bearings; replace arbor.
	10. Motor bearings are at fault.		10. Test by rotating shaft; rotational grinding/loose shaft
				requires bearing replacement.
Miter Saw Operations

Symptom		Possible Cause		Possible Solution
Blade is not aligned		1.	Blade is warped.	1.	Replace blade.
with table miter slot.		2.	Pivot arm assembly out of alignment.	2.	Adjust pivot arm assembly 45° to fence (Page 34).
Machine slows when		1.	Applying too much pressure to workpiece.	1.	Reduce blade lowering speed (Page 20).
operating.		2.	V-belts loose or worn.	2.	Re-tension/replace V-belts (Page 29).
Excessive vibration.		1.	Loose arbor nut.	1.	Tighten the arbor bolt.
		2.	Blade out of balance.	2.	Replace blade.
		3.	Arbor bearings worn.	3.	Replace arbor bearings.
Board binds or burns		1.	Blade is warped.	1.	Replace blade.
cuts.		2.	Dull blade.	2.	Sharpen/replace blade.
		3.	Feed rate too slow.	3.	Increase blade lowering/raising speed (Page 20)
Workpiece	moves	1.	Hold-downs are not properly adjusted.	1.	Properly adjust hold-downs to workpiece (Page 19).
during cutting.		2.	Blades begin cut before hold-downs clamp	2.	Adjust lowering speeds so that hold-downs clamp
			workpiece.		workpiece before blades begin the cut (Page 20).
Cuts are not 45°.		1.	Blade is warped.	1.	Replace blade.
		2.	Pivot arm assembly out of alignment.	2.	Adjust pivot arm assembly 45° with fence (Page
					34).
Excessive or	unac-	1.	Incorrect blade being used.	1.	Use 12" blades that are designed for miter cutting of
ceptable tear out.					wood products that typically have a high tooth count
					and a #6 tooth set.
		2.	Dull blade.	2.	Sharpen/replace blade.
		3.	Bakelite inserts or aluminum block in table	3.	Replace bakelite inserts (Part No. 135 & 135) or
			have been cut larger excessively larger than		aluminum block (Part No. 134) (see Page 41).
			blade kerf.
		4.	Blade lowering/raising speeds incorrect for	4.	Adjust blade lowering/raising speeds while mak-
			workpiece material.		ing test cuts on scrap piece of same material to be
					used for production run, using trial-and-error adjust-
					ments.
-32-					G0641 Double Miter Saw