Clutch Cable Adjustment; Lubrication; Cutterblade Removal; Cutterblade Assembly - Hayter Harrier 48/56 BBC 493F Owner's Handbook Manual

MOWER MAINTENANCE

Clutch Cable Adjustment

At any time the operator feels that the machine is loosing
drive:
1. Stop the engine.
2. Pull the machine backwards at the same time
progressively engage the clutch lever until the rear
rollers lock, at this point the clutch lever should be
60mm from the handlebar.
3. If the distance between the clutch lever and handlebar
is less than 60mm regulate the engagement position
with the black plastic cable adjuster. To regain the
60mm distance (Refer fig.30 & 31)
4. Note this is a temporary adjustment and at the nearest
opportunity a service should be carried out to ensure
the spring on the clutch cable attached to the gearbox
clutch is set correctly. This adjustment should be done
using the metal adjuster at the control with the plastic
adjuster reset fully wound in. When the spring is set
tighten the inner lock nut to secure position. (Refer
figs.32 & 33)

Lubrication

Lubricate the wheels, pivot points and linkages with
engine oil every 25 operating hours.
Apply a good quality medium grease to the inner control
Fig. 30 Fig. 31
60mm
cables at the point of entry and exit from their outer cas-
ing.

Cutterblade Removal

Drain the fuel by running the engine until the fuel tank
is empty and the engine stops. Remove the spark plug
lead and allow the engine to cool. Turn the mower on its
left hand side and ensure that the air cleaner side of the
engine is uppermost. (Refer fig.34)
Remove the two socket head screws (1), and Former
BBC blade (2) and plate clamp BBC (3). (Refer fig.35)
To prevent accidents never work on the cutterblade
unless the spark plug lead has been removed. The
cutterblade has sharp edges. ALWAYS wear strong
gloves to protect your hands when working on the
cutterblade. DO NOT rotate tools towards the cutting
edges to avoid the risk of injury should the tool slip.
ALWAYS use genuine Hayter replacement parts.
The condition of the cutterblade and its mounting
arrangement should be checked regularly for signs of
wear or damage. Ensure that the cutterblade is not bent
or cracked.
A damaged cutterblade that is out of balance will vibrate
excessively and may break. DO NOT use an unbalanced
cutterblade.
Fig. 32 Fig. 33
13mm
Clutch lever
extension
fully engaged
1
Clutch spring
Regularly check that the bolt securing the cutterblade is
tightened to the specified torque of 55Nm.
Replace the cutterblade every 2 years of sooner if
excessively worn or damaged.
To prevent injury it is wise to seek assistance when
turning the mower on its side.

Cutterblade Assembly

Assemble the two socket head screws (1), Former BBC
blade (2) and Plate clamp BBC (3). Tighten to a torque of
55Nm. (Refer fig. 35)
Fig. 34
Tighten the inner
nut when the cable
spring is set.
Metal
adjuster
12
Fig. 35
Cutterblade
1
2
3