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1-8. Blade components
(1)
Blade, bolt and nut inspection
• Check for blade cracks, damage and wear.
Replace blades soon after the amount of wear
exceeds roughly half.
• Check for looseness, cracks, deformation, damage
and wear in blade fastening bolts and nuts.
(2)
Cutter shaft inversion
• The cutter shaft can be removed and reattached in the opposite left/right orientation to enable use
of the blades on the non-worn side.
The procedure must be done by a dealer or repair shop.
(3)
Blade replacement
• Both sides of the blades can be used. When blades
have become worn, they can be inverted or replaced
with new blades by following the steps below.
(1) Loosen and remove the lock nut.
(2) Remove the bolt and take out the blades.
(3) Check the lock nut and bolt for cracks, damage, wear
and deformation. If problems are found, contact your
dealer to order genuine Zenoah replacement parts.
(4) Reattach the blades and fasten the bolt and lock nut.
(5) Tighten the lock nut securely.
Fastening torque
17 to 25 N-m {1.7 to 2.5 kgf-m}
Blade components are important safety parts that must be replaced with new parts after at least
every 300 hours of operation or once per season. (The important safety parts are the parts
surrounded by in the diagram above.)
Always use genuine Zenoah parts when replacing parts. Tighten bolts and lock nuts securely after
replacement.
1-9. Cut height adjustment handle
Check that the handle turns smoothly and is effective at adjusting the cut height.
New blade
Blade ready for
replacement
(60% edge wear)
Lock nut
Holder
Blades
Bolt
DANGER