Cutter Blade Adjustment; Long Term Storage; Troubleshooting Guide - Shindaiwa SBA-AH2422 Owner's/Operator's Manual

Cutter Blade Adjustment

WARNING!
The cutter blades are very
sharp! Always wear gloves when
working around the cutter assembly.
CAUTION!
Operating the trimmer with worn or
improperly adjusted cutters will reduce
cutter performance and may also
damage your unit.

Long Term Storage

Whenever the unit will not be used for
30 days or longer, use the following
procedures to prepare it for storage:
■
Clean external parts thoroughly.
■
Before storing the unit, repair or re-
place any worn or damaged parts.

Troubleshooting Guide

Cutting attachment
oscillates at engine idle.
Excessive vibration.
Attachment will not rotate.
Cutter performance of your unit depends
in great measure on cutter blade clearance.
Properly adjusted blades will oscillate freely
yet help prevent binding of cut material
between blades. Adjust blades as follows:
1. Loosen all blade locknuts at least one
full turn.
2. Tighten each blade shoulder bolt
firmly, and then loosen the shoulder
bolts 1/4 to 1/2 turn.
3. Working from the gearcase end, lock
each bolt in place by firmly tightening
its locknut while preventing the
shoulder bolt from turning.
■
Store the unit in a clean, dust-free area.
■
Lubricate gearcase.
■
Cover the blade with the blade cover.
Additional Problems
Engine idle too high.
Broken clutch spring or worn clutch
spring boss.
Loose attachment holder.
Warped or damaged attachment.
Loose gearcase.
Bent main shaft/worn or damaged
bushings.
Shaft not installed in powerhead or
gearcase.
Broken shaft.
Damaged gearcase.
When shoulder bolt adjustment is correct,
there should be a gap of 0.25–0.50 mm
between the cutter blades and the flat
washers, and the flat washer beneath each
bolt head should turn freely.
Guide Bar
Cutter Blades
Shoulder
Bolt
Set idle: 2,750 min
-1.
Replace spring/shoes as required,
check idle speed.
Inspect and retighten holders securely.
Inspect and replace attachment as
required.
Tighten gearcase securely.
Inspect and replace as necessary.
Inspect and reintall as required.
Return unit to dealer.
Locknut
AH231_38
Washer
(should turn
freely)
11