Gearcase; General Cleaning And Tightening; Blade Sharpening - Maruyama B420L Manual Del Propietario U Operador

Gearcase

Maintenance Interval
The gearcase should be checked for lubrication after
each 30 hours of use.
Gearcase Lubrication
Bearing Lube
(P/N 211337)
Gearcase
Remove the cutting attachment and the boss adapter.
Clean any dirt and debris from the area between the
boss adapter and the gearcase. Remove the grease plug
from the side of the gearcase.
While rotating the attaching shaft, inject lithium-base
bearing lube (P/N 211337) through the plug hole until
the gearcase is full. Reinstall the boss adapter and
grease plug.

General Cleaning and Tightening

WARNING
POTENTIAL HAZARD
• When engine is running, cutting head is
rotating and other parts are moving.
WHAT CAN HAPPEN
• Contact with rotating cutting head or
other moving parts could cause serious
personal injury or death.
HOW TO AVOID THE HAZARD
• A lway s t u r n o f f you r T r i m m er /
Brushcutter before you clean or perform
any maintenance on it.
The MARUYAMA Trimmer/Brushcutter will provide
maximum performance for many, many hours if it is
maintained properly. Good maintenance includes
regular checking of all fasteners for correct tightness,
and cleaning the entire machine.
Grease Plug
Plug Hole
Attaching Shaft
Boss Adapter

Blade Sharpening

IMPORTANT: Replace any blade that is worn,
wraped, cracked or otherwise damaged in any
way.
IMPORTANT: Sharpen every tooth evenly so
the blade rotates smoothly. If you sharpen a
blade with a grinder, do not overheat the blade,
and do not quench a hot blade in water to cool
it. Never leave a sharp radius or groove when
grinding or filing.
Four-tooth Blade
Sharpen with a single-cut flat file.
0.118" (3 mm)
Eight-tooth Blade
Sharpen with a single-cut flat file and a round file.
0.275" – 0.315" (7 – 8 mm)
— US-24 —
0.079" – 0.118" (2 – 3 mm)
0.394" (10 mm)
0.059" – 0.098"
(1.5 – 2.5 mm) Radius