Troubleshooting; 1 Troubleshooting Procedure; 2 Sharpening Test - Oregon 720-120 Original Instruction Manual

Auto chain grinder

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7 Troubleshooting

1 Make sure that the machine has sufficient power.

2 Read section 7.3, "Issues" and section 7.4, "Troubleshooting indicators" to find a description of the issue.

3 Perform the recommended corrective procedures.

4 Perform a sharpening test, see instruction in section 7.2, "Sharpening test."

5 If the problem persists after corrective procedures, contact your regional sales representative to reach

your service team.

WARNING Stop the machine immediately if it does not work correctly!

Always do a sharpening test:

• when the machine is new,

• to learn how to use the machine, or

• if the chain is not sharpened as expected.

Recommendation: Use an old chain for the test.

1 Insert a test chain into the machine and sharpen it according to the instructions in section 5,

"Operation."

2 Test the functions of the machine and study its motions.

3 Make sure that:

• the right (outer) and left (inner) cutters are sharpened to even lengths. Use a slide-gauge to

measure. If they are uneven, see steps 15 and 16 of section 5.2.5, "Make the grinding settings."

• the grinding depth on the chain is deep enough. If the grinding wheel is worn, it needs to be adjusted,

see step 14 of section 5.2.5, "Make the grinding settings". If it needs to be changed, see section 6.3.

"Change the grinding wheel and fit the grinding wheel guard."

4 Repeat the sharpening test until you see satisfactory test results, and the machine is running

trouble-free.

5 Remove the test chain.

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720-120

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