Yanmar SA Series Operation Manual page 163

3. Brakes
The problem is:
The rear brakes are
not working correctly
4. Steering
The problem is:
The steering is not
working
5. Body and Machinery
The problem is:
There is excessive
vibration
The engine is
running, but the
tractor does not move
17. TROUBLESHOOTING
The possible cause(s) are:
1. A problem in the brake
The possible cause(s) are:
1. A problem in the steering
2. A problem in the steering cylinder
The possible cause(s) are:
1. A problem in the engine
2. A problem in the transmission
1. A problem in the hydrostatic
transmission (HST)
2. A problem in the brake
Remedy:
1. Brake system
• Check whether the brakes are
adjusted correctly.
• adjust the brakes correctly
• Check whether the brake linkage is
worn out or damaged.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
• Check whether the brake disk is worn
out or damage.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
Remedy:
1. Steering
• Check whether the transmission
hydraulic oil level is low.
• add transmission hydraulic oil
• Check whether the wheel spindles
are damaged.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
2. Steering cylinder
• Check whether the steering linkage
requires lubrication.
• lubricate the steering linkage
• Check for excessive play in the
steering.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
Remedy:
1. Engine
• Check whether the idle speed is too
slow.
• adjust the idle speed
2. Transmission
• Check whether the drive shaft is worn
out.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
1. Hydrostatic transmission (HST)
• Check whether the hydrostatic
transmission is faulty.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
2. Brake system
• Check whether the brakes are
adjusted correctly.
• adjust the brakes correctly
17-10
SA221/324/424 Operation Manual