Simplicity AGCO Allis 400 Series, Service & Repair Manual

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2 Troubleshooting
Mower Troubleshooting
Rider Troubleshooting Cont.
PROBLEM CAUSES REMEDIES
Rider drive belt slips. 1. Clutch is out of adjustment. See Adjustments Section.
2. Pulleys or belt greasy or oily. Clean as required.
3. Belt stretched or worn. Replace with correct belt.
4. Idler pulley pivot bracket Remove idler pulley, clean and lubricate.
“frozen” in declutched position.
Brake will not hold. 1. Brake is incorrectly adjusted. See Brake Adjustment.
2. Internal brake disc on See Brake Adjustment and
transaxle worn. Transmission Repair Sections.
Rider steers hard or 1. Steering linkage is loose. Check and tighten any loose connections.
handles poorly. See Steering Gear Adjustment.
2. Improper tire inflation. Check and correct.
3. Wheel bearings dry. Grease wheels and lubricate steering linkage
or steering linkage dry See Lubricating the Rider.
Drive belt does not stop when 1. Belt stops or belt tension See Adjustments Section.
clutch/brake pedal depressed. out of adjustment.
TROUBLESHOOTING THE MOWER
PROBLEM CAUSES REMEDIES
Mower will not raise. 1. Lift not properly attached Attach or repair.
or damaged.
2. Lift Cable Broken Replace cable.
Mower cut is uneven. 1. Mower not leveled properly. See Mower Adjustment.
2. Rider tires not inflated See Maintenance Section.
equally or properly.
Mower cut is rough looking. 1. Engine speed too slow. Set to full speed.
2. Ground speed too fast. Slow down.
3. Blades are dull. Sharpen or replace blades.
See Mower Blade Service.
4. Mower drive belt slipping Clean or replace belt as necessary.
because it is oily or worn.
5. Blades not properly fastened See Mower Blade Service.
to arbors.
Engine stalls easily with 1. Engine speed too slow. Set to full throttle.
mower engaged. 2. Ground speed too fast. Slow down.
3. Carburetor improperly adjusted. See Engine Manual.
4. Cutting height set too low. Cut tall grass at maximum cutting
height during first pass.
5. Discharge chute jamming Cut grass with discharge pointing toward
with cut grass. previously cut area.
Excessive mower vibration. 1. Blade mounting screws Tighten to 50-70 ft.lbs. (74 N.m.).
are loose.
2. Mower blades, arbors, Check and replace as necessary.
or pulleys are bent.
3. Mower blades are out Remove, sharpen, and balance blades.
of balance. See Mower Blade Service.
4. Belt installed incorrectly. Reinstall Correctly.
Excessive belt wear or breakage. 1. Belt tension too tight. Adjust belt tension.
2. Bent or rough pulleys. Repair or replace.
3. Using incorrect belt. Replace with correct belt.
Mower drive belt slips 1. Idler pulley spring broken or not Repair or replace as needed.
or fails to drive. properly attached.
2. Belt stops out of adjustment. Check belt stops.
3. Mower drive belt broken. Replace drive belt.