Stihl RZA 748 Instruction Manual - Page 37

Specifications

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Troubleshooting 8 Troubleshooting English PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION The mower does not 1. You are not sitting in the start or fails to keep operator's seat. running. 2. The mower is not charged. 3. The electrical connections are corroded or loose. 4. A fuse is blown. 5. A relay or switch is damaged. 1. Sit on the operator's seat. 2. Charge the mower. 3. Check the electrical connections for good contact. 4. Replace the fuse. 5. Contact an authorized STIHL servicing dealer. The mower pulls to the left or right (with both motioncontrol handles fully forward). 1. The tracking needs adjustment. 2. The tire pressure in the drive tires is not correct. 1. Contact an authorized STIHL servicing dealer to adjust the tracking. 2. Adjust the tire pressure. There is abnormal vibration. 1. Mowing blade(s) is/are bent or unbalanced. 2. A blade-mounting bolt is loose. 3. A blade spindle is bent. 1. Install new mowing blade(s). 2. Tighten the blade-mounting bolt. 3. Contact an authorized STIHL servicing dealer. The cutting height is 1. Blade(s) are not sharp. 1. Sharpen the blade(s). uneven. 2. Cutting blade(s) is/are bent. 2. Install new mowing blade(s). 3. The mower deck is not level. 3. Contact an authorized STIHL servicing 4. An anti-scalp roller (if applicable) dealer to level the mower deck side-to- is not set correctly. side position. 5. The mower deck pitch is wrong. 4. Adjust the anti-scalp roller. 6. The underside of mower deck is 5. Contact an authorized STIHL servicing dirty. dealer to adjust the front-to-rear pitch. 7. The tire pressure is not correct. 6. Clean the underside of the mower 8. A blade spindle is bent. deck. 7. Adjust the tire pressure. 8. Contact an authorized STIHL servicing dealer. The blades do not rotate. 1. The safety-interlock system prevents blades rotation. 2. The PTO switch is malfunctioning. 3. The grass is too thick for blade rotation. 4. The blade controller has errors. 1. Contact an authorized STIHL servicing dealer. 2. Contact an authorized STIHL servicing dealer. 3. Start the mower at an area without thick grass. 4. Contact an authorized STIHL servicing dealer. 9 Specifications Model No. RZA748 Gross mower weight (lbs) Length (in) 1538.8 lbs (698 kg) 77.5'' (196.9 cm) Height (in) 74.4'' (189.0 cm) Width (with discharge) (in) 61'' (154.9 cm) Deck width (in) 49'' (124.5 cm) Cutting width (in) 48'' (121.9 cm) RZA752 1571.9 lbs (713 kg) 77.5'' (196.9 cm) 74.4'' (189.0 cm) 65.4'' (166.1 cm) 53'' (134.6 cm) 52'' (132.1 cm) RZA760 1622.6 lbs (736 kg) 77.5'' (196.9 cm) 74.4'' (189.0 cm) 73.5'' (186.7 cm) 61'' (154.9 cm) 60'' (152.4 cm) 37

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37
English
Troubleshooting
8 Troubleshooting
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
The mower does not
start or fails to keep
running.
1. You are not sitting in the
operator's seat.
2. The mower is not charged.
3. The electrical connections are
corroded or loose.
4. A fuse is blown.
5. A relay or switch is damaged.
1. Sit on the operator's seat.
2. Charge the mower.
3. Check the electrical connections for
good contact.
4. Replace the fuse.
5. Contact an authorized STIHL servicing
dealer.
The mower pulls
to the left or right
(with both motion-
control handles fully
forward).
1. The tracking needs adjustment.
2. The tire pressure in the drive
tires is not correct.
1. Contact an authorized STIHL servicing
dealer to adjust the tracking.
2. Adjust the tire pressure.
There is abnormal
vibration.
1. Mowing blade(s) is/are bent or
unbalanced.
2. A blade-mounting bolt is loose.
3. A blade spindle is bent.
1. Install new mowing blade(s).
2. Tighten the blade-mounting bolt.
3. Contact an authorized STIHL servicing
dealer.
The cutting height is
uneven.
1. Blade(s) are not sharp.
2. Cutting blade(s) is/are bent.
3. The mower deck is not level.
4. An anti-scalp roller (if applicable)
is not set correctly.
5. The mower deck pitch is wrong.
6. The underside of mower deck is
dirty.
7. The tire pressure is not correct.
8. A blade spindle is bent.
1. Sharpen the blade(s).
2. Install new mowing blade(s).
3. Contact an authorized STIHL servicing
dealer to level the mower deck side-to-
side position.
4. Adjust the anti-scalp roller.
5. Contact an authorized STIHL servicing
dealer to adjust the front-to-rear pitch.
6. Clean the underside of the mower
deck.
7. Adjust the tire pressure.
8. Contact an authorized STIHL servicing
dealer.
The blades do not
rotate.
1. The safety-interlock system
prevents blades rotation.
2. The PTO switch is
malfunctioning.
3. The grass is too thick for blade
rotation.
4. The blade controller has errors.
1. Contact an authorized STIHL servicing
dealer.
2. Contact an authorized STIHL servicing
dealer.
3. Start the mower at an area without
thick grass.
4. Contact an authorized STIHL servicing
dealer.
9
Specifications
Model No.
RZA748
RZA752
RZA760
Gross mower weight (lbs)
1538.8 lbs (698 kg)
1571.9 lbs (713 kg)
1622.6 lbs (736 kg)
Length (in)
77.5'' (196.9 cm)
77.5'' (196.9 cm)
77.5'' (196.9 cm)
Height (in)
74.4'' (189.0 cm)
74.4'' (189.0 cm)
74.4'' (189.0 cm)
Width (with discharge) (in)
61'' (154.9 cm)
65.4'' (166.1 cm)
73.5'' (186.7 cm)
Deck width (in)
49'' (124.5 cm)
53'' (134.6 cm)
61'' (154.9 cm)
Cutting width (in)
48'' (121.9 cm)
52'' (132.1 cm)
60'' (152.4 cm)