7troubleshooting – Toro GROUNDSMASTER 345 User Manual
Page 9
TORO GM 345
Ford VSG-411 Gas Engine
Notes
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7
Troubleshooting:
High and Low Idle Checks.
The idle settings are important for the proper operation and long life of the machine.
Affects of incorrect idle speeds:
1. High idle too slow:
•
Low power. (engine not running at full speed)
•
Slow transport speed. (hydrostatic transmission input shaft speed too slow)
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Poor Quality of cut. (Blade RPM and tip speed too slow)
2. High idle too fast:
•
Internal engine damage. (Excessive engine RPM can damage crankshaft and bearings)
•
Hydrostatic transmission damage. (insufficient lubrication for high input shaft speeds)
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Engine overheating.
3. Low idle too slow:
•
Hydrostatic transmission damage.(lack of lubrication)
Checking Idle Speeds
1. Run the engine until it reaches normal operating temperature.
2. Move the throttle lever to the low idle position.
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Low idle should be 1500 ± 100.
3. Open the throttle to the high idle position.
•
High idle should be 3200 ± 100.
NOTE: If high or low idle is incorrect, refer to the Operators manual for correct adjustment procedures.