MAINTENANCE
nReinstall the chain cover assembly, bushing and guide bar nut. Tighten the guide bar nut finger tight only. The
bar must be free to move for tension adjustment. | LIFT THE TIP OF | |
NOTE: When replacing the chain cover assembly assure | THE GUIDE BAR | |
UP TO CHECK FOR | ||
that the adjusting pin is in the chain tension pin hole and | ||
SAG | ||
that the chain cover assembly fits flush to the housing. | ||
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NOTE: Chain tensioning knob has two markings: “+” |
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tightens the tension of chain and |
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sion. |
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n Remove all the slack from the chain by turning the chain |
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tensioning knob “+” until the chain seats snugly against |
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the bar with the drive links in the bar groove. |
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n Lift the tip of the guide bar up to check for sag. Release | Fig. 30 | |
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the tip of the guide bar and turn the chain tensioning |
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knob 1/2 turn “+”. Repeat this process until sag does not |
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exist. |
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n Hold the tip of the guide bar up and tighten the guide bar |
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nut securely. |
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n Chain is correctly tensioned when there is no sag on the |
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underside of the guide bar, the chain is snug, but it can |
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be turned by hand without binding. |
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NOTE: If chain is too tight, it will not rotate. Loosen the |
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guide bar nut slightly and turn chain tension knob 1/4 turn |
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SCRENCH | ||
bar nut securely. Assure that the chain will rotate without | ||
binding. | Fig. 31 | |
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