Exmark Vantage VT740EKC604; - Manual (Page 48)

Troubleshooting
Problem Possible Cause Corrective Action
1. Engine load is excessive 1. Reduce the ground speed.
2. Air cleaner is dirty. 2. Clean or replace the air cleaner element.
3. Oil level in the crankcase is low. 3. Add oil to the crankcase.
4. Cooling fins and air passages for the
engine are plugged.
4. Remove the obstructions from the cooling
fins and air passages.
5. Vent hole in the fuel cap is plugged. 5. Clean or replace the fuel cap.
6. Dirt in fuel filter. 6. Replace the fuel filter.
Engine loses power
7. Dirt, water, or stale fuel is in the fuel
system.
7. Contact an Authorized Service Dealer.
1. Engine load is excessive 1. Reduce the ground speed.
2. Oil level in the crankcase is low. 2. Add oil to the crankcase.
Engine overheats
3. Cooling fins and air passages for the
engine are plugged.
3. Remove the obstructions from the cooling
fins and air passages.
1. Tire pressure in drive tires not correct. 1. Adjust tire pressure in the drive tires. Mower pulls left or right (with levers fully
forward).
2. Tracking needs adjustment. 2. Adjust the tracking by turning the LH
adjustment rod in the direction that the
mower needs to be adjusted to. Rotate the
adjustment rod in 1/4 turn increments
until the mower tracks correctly.
1. Bypass valve is not closed tight. 1. Tighten the bypass valve.
2. Drive or pump belt is worn, loose or
broken.
2. Change the belt.
Machine does not drive.
3. Drive or pump belt is off a pulley. 3. Change the belt.
1. Blade(s) not sharp. 1. Sharpen the blade(s).
2. Cutting blade(s) is/are bent. 2. Install new cutting blade(s).
3. Mower deck is not level. 3. Level mower deck from side-to-side and
front-to-rear.
4. Underside of mower is dirty. 4. Clean the underside of the mower.
5. Tire pressure in drive tires not correct. 5. Adjust tire pressure in the drive tires.
6. Blade spindle bent. 6. Contact an Authorized Service Dealer.
Uneven cutting height.
7. Tips of adjacent blades are at an uneven
cutting height. Blades tips should be even
within 3/16 inch which is approximately
one blade thickness.
7. Replace blades, spindles and (or) check
for damage to mower deck.
1. Cutting blade(s) is/are bent or unbalanced. 1. Install new cutting blade(s).
2. Blade mounting bolt is loose. 2. Tighten the blade mounting bolt.
3. Engine mounting bolts are loose. 3. Tighten the engine mounting bolts.
4. Loose engine pulley, idler pulley, or blade
pulley.
4. Tighten the appropriate pulley.
5. Engine pulley is damaged. 5. Contact an Authorized Service Dealer.
6. Blade spindle is bent. 6. Contact an Authorized Service Dealer.
Abnormal vibration
7. Belt is damaged. 7. Install new belt.
1. Drive belt is off pulley. 1. Check belt for damage; replace if
necessary. Install drive belt and check
adjusting shafts and belt guides for correct
position.
2. Deck belt is worn, loose or broken. 2. Install new deck belt.
3. Deck belt is off pulley. 3. Install deck pulley and check the idler
pulley, idler arm and spring for correct
position and function.
4. Broken or missing idler spring. 4. Replace the spring.
Blades do not rotate.
5. Damaged electric clutch. 5. Contact an Authorized Service Dealer.
48