EN–8
Note: When storing the unit or when setting
unit down between uses, place the unit
flat on the floor so it sits on its stand
instead of hanging it by the guard or
the cutting head (Fig. 13).
Adjusting The Trimming Line
Length
Your trimmer is equipped with a bump head that
allows the operator to release more trimming line
without stopping the engine. To release additional
line, lightly tap the trimming head on the ground
(Fig. 14 – Model 51903, Fig. 15 – Model 51906)
while operating the trimmer at high speed.
Note: Always keep the trimming line fully
extended. Line release becomes more
difficult as 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
weed guard will cut the line to the proper length if
excess line is released.
For best results, tap the head on bare ground or hard
soil. If line release is attempted in tall grass, the
engine may stall.
Decorative Trimming
Decorative trimming is accomplished by removing all
vegetation around trees, posts, fences, etc.
(Fig. 16 – Model 51903, Fig. 17 – Model 51906).
Maintenance
Maintenance Schedule
These required maintenance procedures should be performed at the frequency stated in the table to ensure that
your unit continues to meet the 1995 California emission regulations. They should also be included as part of any
seasonal tune-up.
Frequency Maintenance Required Refer to:
Before starting engine Fill fuel tank with correct oil and fuel mixture. Page 7
Every 10 hours Clean and re-oil air filter. Page 10
Every 25 hours Inspect and clean muffler. Page 12
Every 50 hours Check spark plug condition and gap. Page 11
Line Installation
The trimming line may be replaced by two different
methods — rewinding the existing reel or installing a
prewound reel.
Rewinding The Existing Reel
To rewind the existing reel you must:
1. Check for the correct line size.
2. Remove the existing reel and spring.
3. Wind the existing reel with the new line.
4. Reinstall the existing reel and spring.
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