613GC OPERATOR’S MANUAL

MAINTENANCE

CHAIN TENSIONER

IMPORTANT

The chain tensioner (Figure 1) can become clogged with concrete slurry during cutting. After each use thoroughly flush the chain tensioner with water. Then apply a liberal amount of grease.

Most Common Causes of Tensioner Damage:

Side cover nuts are not tight enough. Side cover nuts should be torqued to 20 ft-lbs (27Nm).

Chain tensioning is attempted without loosening the side cover nuts.

Concrete debris in tensioner pocket.

Chain

Tensioner

Figure 1

DRIVE SPROCKET

 

 

The drive sprocket (rim sprocket) is a wear item and should be

IMPORTANT

replaced every 2-3 diamond chains.

 

The needle bearing inside the splined adapter should be greased

 

IMPORTANT

regularly and should be replaced with each new clutch cup.

 

 

Clutch

Splined

Rim

A rim sprocket system (Figure 2) consists of a clutch cup w/

Cup

Adapter

Sprocket

 

 

splined adapter and a rim sprocket. When the rim sprocket

 

 

 

wears out, it is the only part that needs to be replaced. The

 

 

 

clutch cup w/ splined adapter is a wear item that needs

 

 

 

replacement after 3 to 5 rim sprockets have been used.

 

 

 

Inspect the rim the rim sprocket for wear. Replace the rim

 

sprocket if the drive teeth become pointed.

 

Check the drive sprocket bearing by spinning clutch cup.

 

Replace the bearing if it is worn out.

 

The needle bearing on the drive shaft must be greased

 

regularly, use high quality water-resistant bearing grease.

Figure 2

 

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Oregon 613GC manual Chain Tensioner, Drive Sprocket