11
C. Service Maintenance Guide
D. Blade Adjustment
The care and adjustment of the blades is very important to the
efficient operation of the trimmer and especially to the long life of
the engine.
1. Place trimmer in vise, clamping on the frame bar. Be careful! Blades
are sharp!
2. Using a 7/16” wrench, loosen all blade locknuts and unscrew the
large head screws by two turns.
3. Starting with the screw nearest the gear housing, tighten the screw
until the blade guard of the single edge trimmer can just be moved
with finger pressure and a .0015" (1 1/2 thou.) feeler blade just slips
under the blade guard. Tighten the locknuts while holding the screw
stationary in its correct adjusted position.
4. Repeat Step 3 on the screws in turn until all are
correctly adjusted.
NOTE: Correct blade adjustment can only be achieved on
clean,
oiled blades.
Single Edge
COMPONENT/
SYSTEM
Air Filter
Choke Shutter
Fuel Filter
Fuel Cap Gasket
Fuel System
Spark Plug
Cooling System
Muffler Spark Arrestor
Cylinder Exhaust Port
Gear Housing
Recoil Starter Rope
Screws/Nuts/Bolts
MAINTENANCE
PROCEDURE
Inspect/Clean
Inspect/Clean
Inspect
Inspect/Replace
Inspect/Replace
Inspect/Clean
Inspect/Clean
Inspect/Clean/Replace
Inspect/Clean/Decarbon
Grease
Inspect/Clean
Inspect/Tighten/Replace
REQ’D SKILL
LEVEL
1
1
1
1
1
1
2
2
2
2
1
1
DAILY OR
BEFORE USE
I / C *
I / C
I ( 2 ) *
I / C
I / C *
I *
EVERY
REFUEL
I ( 2 ) *
3 MONTHS
OR 90 HOURS
I *
I *
I / C / R *
I / C / R *
I / C
I ( 1 )
YEARLY 600
HOURS
I / R *
R *
MAINTENANCE PROCEDURE LETTER CODES: I = INSPECT, R = REPLACE, C = CLEAN
IMPORTANT NOTE
- Time intervals shown are maximum. Actual use and your experience will determine the frequency of
required maintenance.
MAINTENANCE PROCEDURE NOTES:
(1) Apply "0" or "00" EP Grease every 25 hours of use.
(2) Low evaporative fuel tanks DO NOT require regular maintenance to maintain emission integrity.
* Replacement is recommended based on the finding of damage or wear during inspection.
This chart shows necessary EPA emission maintenance information for fuel tanks/systems and Exhaust Port Cleaning intervals.
†
Replacement will be required for commercial use after 600 hours. For customer use, cleaning every six months is required.
Cleaning includes rebuild kits.
IMPORTANT: Time intervals shown are maximum. Actual use and your experience will determine the frequency of required maintenance.
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