Hayter MT313 Operator's Manual page 52

1.53
EVERY 500 HOURS
Check the engine overheat warning system: Turn the ignition key to the 'ignition on' position 'I'.
Disconnect the green/red wire terminal from the engine temperature switch and touch the metal terminal of
this wire onto a suitable earth point, ensuring that the metal surfaces make good contact. The horn will
sound, engine coolant temperature warning light will illuminate and the analogue gauge will also show
temperature increase to confirm correct operation. If the system is faulty, make repairs before operating the
mower.
Check the hydraulic oil overheat warning system: Turn the ignition key to the 'ignition on' position
'I'. Disconnect the blue/red wire terminal from the hydraulic tank temperature switch and touch the metal
terminal of the wire onto a suitable earth point, ensuring that the metal surfaces make good contact. The
horn will sound and the hydraulic oil temperature warning light will illuminate to confirm correct
operation. If the system is faulty, make repairs before operating the mower.
MAINTENANCE
Continued.
1.53
1. Temperature switch.
1. Temperature Switch
2. Hydraulic oil tank
995920KG200105