Hayter Mowers 563F, 493F manual Clutch Cable Adjustment, Lubrication, Cutterblade Removal

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

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.

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. 30	Fig. 31	Fig. 32
	60mm

1

13mm extension

Clutch spring

Fig. 33 Fig. 34

Clutch lever fully engaged

Tighten the inner

nut when the cable

spring is set.

Metal adjuster

Fig. 35

Cutterblade

1

3 2

12