Simplicity AGCO Allis 500 Series, Service And Repair Manual

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2 Troubleshooting
Troubleshooting Chart
WARNING
Before beginning any service work, turn the PTO
off,set the parking brake, turn the ignition switch
off, remove the key, disconnect the spark plug
wire, and disconnect the negative battery cable.
Never attempt to perform repairs while the engine
is running.
FAILURE TO COMPLY WITH THIS, AND OTHER,
SAFETY REQUIREMENTS CAN RESULT IN
SERIOUS PERSONAL INJURY.
TROUBLESHOOTING
The troubleshooting guide below lists some common
problems, their causes, and remedies.
See the repair information in the following sections for
instructions on how to perform most of these minor
repairs yourself. If you prefer, all of these procedures
can be performed for you by your local authorized deal-
er.
TROUBLESHOOTING THE TRACTOR
PROBLEM CAUSES REMEDIES SEE SECTION
Engine will not 1. Ground speed control lever Shift into neutral. N/A
turnover or start. not in neutral-start position.
2. PTO (electric clutch) switch Place in OFF position. N/A
in ON position.
3. Out of fuel. If engine is hot, allow it to cool, then refill 3
the fuel tank.
4. Engine flooded. Move throttle control out of CHOKE position N/A
5. Circuit breaker tripped. Wait one minute for automatic reset. 7
Replace if defective.
6. Battery terminals require Clean Battery. 3
cleaning.
7. Battery discharged or dead. Recharge or replace. 6
8. Wiring loose or broken. Visually check wiring & replace broken or 7
frayed wires. Tighten loose connections.
9. Solenoid or starter motor faulty. Repair or replace. 7
10.Safety interlock switch. Replace as needed. 7
11.Spark plug(s) faulty, fouled Clean and gap or replace. See Engine Manual
or incorrectly gapped.
12.Water in fuel. Drain fuel & refill with fresh fuel. N/A
13.Gas is old or stale. Drain fuel & replace with fresh fuel. N/A
14.Foot pedal not fully depressed. Depress pedal. N/A
Engine starts hard 1. Fuel mixture too rich. Clean air filter. See Engine Manual
or runs poorly. 2. Carburetor adjusted incorrectly. Adjust Carburetor. See Engine Manual
3. Spark plug(s) faulty, fouled, or Clean and gap or replace. See Engine Manual
incorrectly gapped.
Engine knocks. 1. Low oil level. Check/add oil as required. 3
2. Using wrong grade oil. See engine manual.
Excessive oil 1. Engine running too hot. Clean engine fins, blower screen and See Engine Manual
consumption. air cleaner.
2. Using wrong weight oil. See engine manual.
3. Too much oil in crankcase. Drain excessive oil. 3
Engine exhaust 1. Dirty air filter. Replace air filter. See Engine Manual
is black. 2. Throttle is in choke position. Move throttle out of CHOKE position. N/A
Engine runs, but 1. Ground speed control lever Shift in forward or reverse. N/A
tractor will not drive. in neutral.
2. Transmission release lever Move into “drive” position. N/A
in “push” position.
(Hydro models only)
3. Drive belt is broken. Replace Belt 5
4. Drive belt slips. Adjust clutch/brake, replace belt. 4, 5
5. Brake is not fully released. Adjust Brake. 4