8
1. POWER HEAD - Includes the Engine, Clutch, Fuel System, Ignition System and Recoil Starter.
2. GRIP - Rear (right hand) handle.
3. THROTTLE TRIGGER LOCKOUT - This lever must be held during starting. Operation of the throttle trigger is
prevented unless throttle trigger lockout lever is engaged.
4. STOP SWITCH - "SLIDE SWITCH" mounted on top of the Throttle Trigger Housing. Move switch FORWARD to
RUN, BACK to STOP.
5. UPPER DRIVE SHAFT ASSEMBLY - Includes the Rear (Right Hand) Grip Assembly, Front (Left Hand) Handle
Assembly, Upper Flexible Drive Cable, Drive Shaft Assembly Coupler and Power Head.
6. FRONT HANDLE/BARRIER BAR - The Front (loop) handle is loosely assembled to the Drive Shaft assembly and
must be positioned for proper control and operator comfort. The Barrier Bar is used to restrict rearward movement of
the unit.
7. DRIVE SHAFT COUPLER - Includes Locator Pin and Clamping Knob.
8. NYLON CUTTING ATTACHMENT - Contains replaceable nylon trimming line that advances when the trimmer head
is tapped against the ground while the head is turning at normal operating speed.
9. CUT-OFF KNIFE - Automatically trims line to the correct length: 5" after head is tapped on the ground. If trimmer is
operated without a cut-off knife the line will become too long, the engine will overheat and engine damage may occur.
10. PLASTIC DEBRIS SHIELD ASSEMBLY - Included in plastic bag (co-pack). MUST be installed on unit before use,
see Assembly Instructions. Shield assembly includes the Cut-Off Knife and Safety Decal. Mounts on the Gear
Housing Assembly just above the cutting attachment. Helps protect the operator by deflecting debris produced
during the trimming operation. This shield must be replaced with the steel shield for blade use.
11. LOWER DRIVE SHAFT ASSEMBLY - Includes the Debris Shield Assembly, Gear Housing Assembly, Lower Flexible
Drive Cable, Nylon Cutting Attachment and Safety Decal.
12. THROTTLE TRIGGER - Spring loaded to return to idle when released. During acceleration, press trigger gradually for
best operating technique.
13. SPARK PLUG - Provides spark to ignite fuel mixture.
14. SPARK ARRESTOR - CATALYTIC MUFFLER / MUFFLER -The muffler or catalytic muffler controls exhaust noise
and emission. The spark arrestor screen prevents hot, glowing particles of carbon from leaving the muffler. Keep
exhaust area clear of flammable debris.
15. FUEL TANK - Contains fuel and fuel filter.
16. RECOIL STARTER HANDLE - Pull recoil starter handle slowly until starter engages, then quickly and firmly. When
engine starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
17. FUEL TANK CAP - Covers and seals fuel tank opening.
18. CHOKE - The choke control is located on the top of the air filter case. Move choke lever to "Cold Start" (
) to
close choke for cold start. Move choke lever to "Run" (
) position to open choke.
19. AIR CLEANER - Contains replaceable filter element.
20. PURGE BULB -Pumping purge bulb before starting engine draws fresh fuel from the fuel tank priming the carburetor
for starting. Pump purge bulb until fuel is visible and flows freely in the clear fuel tank return line. Pump purge bulb an
additional 4 or 5 times.
Summary of Contents for SRM-251SB
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Page 31: ...GRASS TRIMMER BRUSH CUTTER OPERATOR S MANUAL 31 NOTES ...
