Hayter Mowers 491G Operating the Mower / Maintenance Schedule, Friction Disc, Non Grassed Areas

OPERATING THE MOWER / MAINTENANCE SCHEDULE

Friction Disc

The cutterblade is driven by the engine via a friction disc to help prevent damage occurring to the engine crankshaft and cutting mechanism when a hidden obstruction or overload is encountered. (Refer fig.18)

Always stop the engine when a hidden obstruction or excessive vibration is encountered. Disconnect the spark plug lead and examine the cutting mechanism. ALWAYS replace a damaged cutterblade - Refer to “Maintenance”.

Non Grassed Areas

When moving the mower across non-grassed areas, stop the engine and set the mower to the maximum height of cut to protect the cutting mechanism. (Refer fig.19)

Daily Engine Detail (Refer fig.20)

-Check the oil level

-Remove grass debris from around the engine, exhaust/ exhaust guard, air ways in the top cowl, underside of the deck housing and from the grassbag and check for signs of damage.

-Check the condition of guards and safety devices.

-Check condition of cutterblade.

25 Hours Or Every Season

-Change the engine oil if continuously operating under heavy load or high ambient temperature.

-Service the air cleaner.

-Lubricate wheels, pivot points and linkages and grease the inner control cables at point of entry and exit from their outer casing.

-Check the clutch cable adjustment.

-Sharpen the cutterblade.

Maintenance Schedule

Follow the hourly or calendar intervals, whichever occurs first. More frequent service will be required if working for prolonged periods under dusty, dry conditions, or when airborne debris is present or after extensive operation

cutting tall, dry grass.

First 5 Hours

-After the very first five hours change the engine oil

-Adjust the autodrive clutch cable

50 Hours Or Every Season

Change the engine oil.

100 Hours Or Every Season

-Clean the engine cooling system. Clean more often under dusty conditions or when airborne debris is present or after prolonged operation whilst cutting tall, dry grass.

-Replace the spark plug.

Fig. 18	Fig. 19	Fig. 20
		2	3
			4
		1	5
		9
		8	6
			7

1.Air Cleaner

2.Fuel Cap

3.Start Grip

4.Cover

5.Oil fill/Dipstick

6.Exhaust Guard

7.Exhaust

8.Spark Plug / Lead

9.Carburettor

10