OPERATING INSTRUCTIONS
ADJUSTING TRIMMING LINE LENGTH
WARNING: Do not remove or alter the line cutting blade assembly. Excessive line length will make the clutch overheat. This may lead to serious personal injury or damage to the unit.
The Bump Head™ cutting attachment allows you to release trimming line without stopping the engine. To release more line, lightly tap the cutting attachment on the ground (Fig. 15) while operating the trimmer at high speed.
NOTE: Always keep the trimming line fully extended. Line release becomes more difficult as the cutting line becomes shorter.
Each time the head is bumped, about 1 inch
(25.4 mm) of trimming line is released. A blade
in the cutting attachment shield will cut the line to the proper length if excess line is released.
For best results, tap the Bump Head™ on bare ground or hard soil. If line release is attempted in tall grass, the engine may stall. Always keep the trimming line fully extended. Line release becomes more difficult as the cutting line becomes shorter.
NOTE: Do not rest the Bump Head™ on the ground while the unit is running.
Some line breakage will occur from:
•Entanglement with foreign matter
•Normal line fatigue
•Attempting to cut thick, stalky weeds
•Forcing the line into objects such as walls or fence posts
TIPS FOR BEST TRIMMING RESULTS
•For best trimming results, operate unit at full throttle.
•Keep the cutting attachment parallel to the ground.
•Do not force the cutting attachment. Allow the tip of the line to do the cutting, especially along walls. Cutting with more than the tip will reduce cutting efficiency and may overload the engine.
•Cut grass over 8 inches (200 mm) by working from top to bottom in small increments to avoid premature line wear or engine drag.
•Cutting from right to left improves the unit's cutting efficiency. Clippings are thrown away from the operator.
•Slowly move the trimmer into and out of the cutting area at the desired height. Move either in a
•Trim only when grass and weeds are dry.
•The life of your cutting line is dependent upon proper adherence of explained trimming techniques, what vegetation is cut, and where vegetation is cut.
For example, the line will wear faster when trimming against a foundation wall as opposed to trimming around a tree.
DECORATIVE TRIMMING
Decorative trimming is accomplished by removing all vegetation around trees, posts, fences and more.
Rotate the whole unit so that the cutting attachment is at a 30° angle to the ground (Fig. 16).
Fig. 16
MAINTENANCE AND REPAIR INSTRUCTIONS
MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal
NOTE: Some maintenance procedures may require special tools or skills. If you are unsure about these procedures take your unit to any
NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by any non- road engine repair establishment, individual or authorized service dealer.
WARNING: To prevent serious injury, never perform maintenance or repairs with unit running. Always service and repair a cool unit. Disconnect the spark plug wire to ensure that the unit cannot start.
FREQUENCY | MAINTENANCE REQUIRED | SEE | |
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Before starting engine | Fill fuel tank with fresh fuel | p. 4 | |
Check oil | p. 9 | ||
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Every 10 hours | Clean and | p. 10 | |
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1st change at 10 hours | Change oil | p. 10 | |
2nd change at 25 hours | Change oil | p. 10 | |
Every 25 hours thereafter | Clean spark arrestor | p. 13 | |
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10 hours on new engine | Check rocker arm to valve clearance and adjust | p. 11 | |
Every 25 hours | Check rocker arm to valve clearance and adjust | p. 11 | |
Every 25 hours | Check spark plug condition and gap | p. 12 | |
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