Stanley Black & Decker DS11 user manual Troubleshooting, Problem Cause Remedy

TROUBLESHOOTING

PROBLEM	CAUSE	REMEDY
Excessive vibration and cuts rough.	Loose chain tension.	Retension the chain.
	Excessive feed force.	Reduce feed force.
Chain saw will not cut straight.	Operator feed force not applied	Move left hand closer to centerline of saw
	directly over centerline of saw.	bar.
	Accumulated saw bar wear and	Turn the saw bar over and dress rails
	uneven chain segment profile wear.	square. Replace the saw bar and chain.
Loss of power.	Drive sprocket slipping on	Adjust and tighten Trantorque® adapter,
	Trantorque® adapter.	(35 ft lbs/47 Nm).
Chain saw does not run.	Power source not functioning.	Check power source for proper flow and
		pressure (7–9 gpm/26–34 lpm @ 2000
		psi/140 bar).
	Coupler or hoses are blocked.	Remove obstruction.
	Mechanical failure.	Disassemble the chain saw and inspect for
		damage.
Chain saw runs backwards.	Pressure and return hoses reversed.	Connect for proper flow direction. Motor
		shaft must rotate clockwise.
Trigger is hard to press.	Pressure and return hoses reversed.	Connect to proper flow direction. Motor
		shaft must rotate clockwise.
	Back pressure too high.	Should not exceed 250 psi/17 bar @ 9
		gpm/34 lpm measured at the end of the
		chain saw’s operating hoses.
Fluid leakage around drive sprocket.	Motor shaft seal failure.	Replace as required.
Fluid leakage between the rear gear	Motor face seal failure.	Replace as required.
housing and the chain saw adaptor.
Fluid leakage between the valve	Oil tube seal failure.	Replace as required.
handle and the extension housing.
Fluid leakage between the extension	Oil tube seal failure.	Replace as required.
housing assembly and the chain saw
adaptor.
Chain saw cuts slow.	Insufficient hydraulic fluid flow or low	Adjust proper hydraulic fluid flow to proper
	relief valve setting.	gpm. For optimum performance, adjust
		relief valve to 2100–2250 psi/145–155 bar.
	Back pressure too high.	Should not exceed 250 psi/17 bar @ 9
		gpm/34 lpm measured at the end of the
		chain saw’s operating hoses.
	Loss of diamond segment side	Replace the chain.
	clearance.
	Hydraulic fluid mixed in water supply.	Check motor for leaks.
	Chain segment dulled because of	Redress segment by cutting in abrasive
	continuous use in hard material or	material (i.e., concrete, build-block, etc.).
	rebar.	NOTE: This indicates that the wrong
		chain is being used.
	Wrong chain for application.	Scale down to a lower numbered chain.
	Wire edged bar rails.	Dress rails square.
Excessive vibration and cuts rough.	Segment(s) broken or missing from	Remove and repair broken segment or
	chain.	replace chain.

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