Blade Replacement
1. Stop engine. Unplug the spark plug wire. Clean
area around dust cover and pry debris out with a screw-
driver (Picture 1).
2. Through dust cover, place 14mm or 9/16” socket
wrench. On blade end of shaft, place 18mm or adjustable
wrench on blade nut (Picture 2).
3. Unscrew nut counter-clockwise (normal right hand
thread).
4. Remove one small washer, one large washer and two
blades (Picture 3). Before installing blade and washers,
clean all grit and grease. Assemble these parts clean and
dry. Fit large washer, new blades with spiggots of one blade
interlocking with holes on opposite blade, large washer,
two small washers, and nut. Tighten nut.
5. Clean plastic dust cap and housing; press back by gently
tapping into place. Clean inside blade cover of any built-
up dirt.
Loose Blade
Follow steps 1 and 2 of Blade Replacement and tighten nut
clockwise.
Picture 1
Picture 2
Picture 3
Picture 4
WARNING
USE ONLY MANTIS BLADES. OTHER BLADES
HAVE LARGER SIZE HOLES (1/2”) WHICH WILL
CAUSE OUT-OF-BALANCE VIBRATIONS WHICH
WILL DAMAGE UNIT AND CAUSE INJURY.
▲
!
▲
!
WARNING
DO NOT RUN ENGINE
WITHOUT BLADE TIGHTENED
TO BLADE SHAFT AS GEAR
DAMAGE WILL OCCUR.
▲
!
▲
!
Lubrication of Gears
There is usually sufficient grease to last at least 4 years or
100 hours of domestic use before topping it up. The grease
in the gear case should be filled up according to use by
adding light, free-flowing grease (available from Mantis,
P/N #9985) through screw hole marked “fill” (Picture 4).
Use a suitable filling gun or squeeze grease pack. Remove
screw marked “bleed.” Squeeze in 3-4 pumps of grease,
until it comes out of the bleed hole. Refit fill screw.
NOTE: Do not use light or heavy gear oil as
it might leak out. If gear case shows leakage,
tighten all screws or replace O-ring. Refill casing.
16
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General