Hayter Mowers 493F Mower Maintenance, Spark Plug Service, Keeping Engine Clean, Deck Housing

MOWER MAINTENANCE

Spark Plug Service

Use only Briggs & Stratton (Part number 19368) spark tester (1) to check for a spark as shown in the diagram.

(Refer fig.25)

Replace the spark plug every 100 hours or every season, whichever occurs first. A spark plug wrench is available from any authorised Briggs & Stratton service dealer.

Check the spark plug gap with a feeler gauge and set at 0.50mm. (Refer fig.26)

Keeping Engine Clean

Remove all grass and debris from the engine including the exhaust/exhaust guard, the air ways in the top cowl and the surrounding deck areas on a daily basis after use. Never spray the engine with water during cleaning. Water can contaminate the fuel. Always clean with a brush or compressed air. (Refer fig.27)

Grass and debris may clog the engine’s air cooling system especially after prolonged operation while cutting tall, dry grass. The internal cooling fins and surfaces may require cleaning to prevent overheating and engine damage. We recommended that this service be carried out by an authorised Hayter Service dealer.

Grassbag

Remove grass debris from the grassbag immediately

after use and check its condition for signs of damage. To prevent accidents replace a damaged grassbag immediately. (Refer fig.28)

Deck Housing

Remove grass debris from the top and underside of the deck housing immediately after use. (Refer fig.29)

Fertilisers and top dressings are particularly corrosive. Thoroughly clean the mower deck immediately after use on treated grass and store well away from corrosive materials.

Securing Nuts & Bolts

Regularly check that all securing nuts and bolts are tight. Replace missing or damaged items immediately.

Fig. 25 Fig. 26 Fig. 27 Fig. 28 Fig. 29

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