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12
1. Follow the servicing instructions for
removing the “Bar and Disc Blades’ on this
page.
2. When the blade carrier is removed from the
crankshaft it can be place in a vice and the
chipper blade removed.
3. Either sharpen and balance out the old
blade, or fit a new one. The mower blade
should also be inspected at the same time.
4. Assemble in the reverse order, taking care
to align the keyway slot in the blade and the
blade driver.
BLADE REPLACEMENT TORQUE
SETTINGS:
Blade center bolt 45-50 Nm (33-37 ft.lb)
Four 6mm chipper
blade bolts
9-11 Nm (6.6-8 ft.lb)
Four 8mm chipper
blade bolts
20-22 Nm (15-16 ft.lb)
Tip mounting bolt 20-25 Nm (15-18 ft.lb)
CONTRACTOR COMMERCIAL MODELS
WHEEL TORQUE SETTING:
Four wheel M8 nyloc
nuts
8 – 9 Nm
(5.9 – 6.6 ft.lb)
ENGINE MAINTENANCE
Consult the engine booklet for the makers
instructions.
DRAINING THE OIL.
While most engines have a drain plug underneath
them, it will be found more convenient to remove
the oil dipstick and tip the mower on its side.
Collect the old oil in a suitable tray such as a two
litre ice cream container.
IGNITION.
Your engine has a breaker-less solid state ignition
system which requires no maintenance other
than occasional attention to the spark plug. We
recommend cleaning and re-gapping
every 50 hours with replacement every 100 hours
(see engine instruction booklet).
CAUTION
DO NOT SANDBLAST PLUGS as abra-
sive grains can enter the engine and
cause serious damage� USE ONLY THE
EXACT TYPE OF REPLACEMENT PLUG
specified in the engine instruction booklet�
AIR CLEANER.
A clean filter cartridge, correctly fitted, is
ESSENTIAL for long engine life. Service the filter
every 25 hours running (more often under adverse
conditions) according to the instructions in the
engine booklet.
MUFFLER.
A rusted or damaged muffler can permit
increased exhaust noise. Check the muffler
condition periodically and replace it only with a
genuine original equipment part.
DRIVE MAINTENANCE
ROTAROLA.
Every 25 hours -
Remove the outer chain cover and apply grease
to the chain.
Every 100 hours -
Remove the outer chain cover, disconnect the
outer chain at its connecting link, withdraw the
sprocket at the top end of the inner chain cover.
Remove the inner chain cover and apply grease
to the chain.
OTHER SELF PROPELLED MODELS.
Every 100 hours -
Remove each rear wheel by removing the hub
cap, and undoing the 8mm nyloc nut and washer
retaining the wheel to the axle. Remove the
circlip retaining the pinion, taking care not to over
stretch it, and remove the washer and
pinion. Apply grease to pawl y, pinion bore z,
and wheel gear {. Take care to replace the pawls
exactly as they were removed, and do not move
pinions to the opposite side of the mower.
GEARBOX.
The gearbox on these models is a sealed unit that
requires no maintenance. Just keep the outside
clean.
CLEANING
MAINTENANCE
THE FOLLOWING MAINTENANCE IS
REQUIRED EVERY 100 HOURS OR WEEKLY
IF USED COMMERCIALLY (REFERS ONLY TO
SELF-PROPELLED MOWERS)
Remove both the gearbox and drive belt covers.
Belt Cover
Gearbox
Cover
Clean out any debris within the drive belt cavity
and around the gearbox. Ensure that there is no
grass build up between the gearbox clutch arm
and travel stop.
WARNING!
Do not use a pressure washer
around the gearbox.
1. Check that the drive belt is tight and has the
correct tension. Adjust if necessary.
2. Check that the clutch arm reaches the travel
stop when the bail arm is released and
adjust if necessary. There should be a small
amount of inner wire slack in this position.
3. Replace the covers.
4. Remove both rear wheels and clean out any
debris. Grease the teeth on the gears and
reassemble.
IMPORTANT
Tighten the M8 nyloc nuts to 8 - 9 Nm.
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