Toro Z149 Z Master 74411 Operator's Manual page 52

Problem
Machine does not drive.
Abnormal vibration.
Uneven cutting height.
Possible Cause
1. By pass valve is not
closed tight.
2. Drive or pump belt is
worn, loose or broken.
3. Drive or pump belt is off
a pulley.
4. Broken or missing idler
spring.
5. Hydraulic uid level is
low or too hot.
1. Cutting blade(s) is/are
bent or unbalanced.
2. Blade mounting bolt is
loose.
3. Engine mounting bolts
are loose.
4. Loose engine pulley,
idler pulley, or blade
pulley.
5. Engine pulley is
damaged.
6. Blade spindle is bent.
7. Motor mount is loose or
worn.
1. Blade(s) not sharp.
2. Cutting blade(s) is/are
bent.
3. Mower is not level.
4. Underside of mower is
dirty.
5. Tire pressure is not
correct.
6. Blade spindle bent.
52
Corrective Action
1. Tighten the by pass
valve.
2. Change the belt.
3. Change the belt.
4. Replace the spring.
5. Add hydraulic uid to
reservoir or let it cool
down.
1. Install new cutting
blade(s).
2. Tighten the blade
mounting bolt.
3. Tighten the engine
mounting bolts.
4. Tighten the appropriate
pulley.
5. Contact an Authorized
Service Dealer.
6. Contact an Authorized
Service Dealer.
7. Contact an Authorized
Service Dealer.
1. Sharpen the blade(s).
2. Install new cutting
blade(s).
3. Level the mower
from side-to-side and
front-to-rear.
4. Clean the underside of
the mower.
5. Adjust the tire pressure.
6. Contact an Authorized
Service Dealer.