ICS 633GC, Operator'S Manual

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633GC OPERATOR’S MANUAL
24
TROUBLESHOOTING
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SAW WON’T REACH FULL RPM - Air filter or spit-back screen is dirty. Clean per page 16.
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SLOW CHAIN SPEED – Chain tension too tight. Chain should always be able to be pulled around
the bar by hand. It is normal for the chain drive links to hang below the bar.
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POOR CUTTING SPEED - Diamonds may be “glazed over”. Make a few cuts in an abrasive material
such as a cinder block to expose the diamonds.
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PREMATURE CHAIN STRECH - Not enough water pressure. The minimum water pressure
required is 20 psi (1.4 bar). Insufficient water supply may result in excessive wear to the
diamond chain, which can lead to loss of strength and diamond chain breakage.
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CHAIN TENSIONER BREAKAGE - Side cover nuts are not tight enough. Torque to 20 ft-lbs
(27Nm).
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WATER NOT FLOWING - Water hose is kinked or supply is not turned on.
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WON’T START – Turn ignition switch on or possible broken spark plug.
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WON’T START – Low compression, less than 120 psi (8 bar). Possible incorrect fuel mixture.
Reference: new = 150 to 180 psi (10 to 12 bar)
used = 140 to 160 psi (9 to 11 bar)
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DIFFICULT TO START – Possible engine flooded. Turn ignition switch on, push choke in, hold
throttle on full with foot and pull starter rope until engine starts.
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DIFFICULT TO START – Possible fouled spark plug. Remove spark plug, clean with wire brush and
re-gap.
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CHAIN BREAKAGE – Chain installed backwards. Bumpers should lead segments into the cut.
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CHAIN BREAKAGE – Not enough feed pressure while cutting. Avoid letting the saw bounce and
chatter.