MASSEY FERGUSON MF 135 Operator's Manual page 67

8. Clogged air cleaner.
9. Fuel shut-off rod linkage incorrect.
10. Faulty pump timing.
Excessive Fuel Consumption
1. Faulty injectors.
2. Pump timing incorrect.
3. Fuel pressure line leakage.
4. Burned , worn or sticking valves.
5. Worn pistons, rings or sleeves.
6. Improver valve adjustment, worn or
bent push rods.
7. Engine overheating.
8. Clutch slippage.
9. Brakes dragging.
10. Excessive exhaust back-pressure.
11. Faulty cooling system thermostat.
12. Clogged air cleaner or air pipe.
Erratic Misfire
1. Faulty injectors.
2. Weak or broken valve springs.
3. Sticky valves.
4. Excessive air in system.
5. Plugged fuel filter.
6. Water in fuel.
Injection Pump Idle Speed Incorrect
1. Idle speed stop screw adjusted incor-
rectly. Reset stop screw 725 to 775 rpm.
2. Improper pump timing. Have your
MF Dealer time your injection pump.
Engine Will Not Stop
1. Fuel shut-off rod linkage incorrect.
Readjust linkage.
2. Improper pump fun ctioning . Have
your MF Deale r check.
Engine Knock
1. Faulty injectors.
2. Timing advanced. Have your MF
Dealer correctly time the injecti on pump .
TROUBLE-SHOOTING GASOLINE
TRACTOR
Engine Cranking Failure
1. Dual range shift lever not in "neu-
tral" position.
2. Loose, grounded, shorted or broken
wiring. Check connections on all switches,
solenoid, starting motor and battery.
3. Discharged battery.
4. Inoperative starting motor.
Engine Cranks but Will Not Start -
Ignition Spark Failure
1. Loose, grounded, shorted or broken
ignition wiring. Check connections on igni-
tion switch, ammeter, coil, distributor and
spark plugs.
2. Mechanical failure of spark plugs --
cracked or broken porcelain, incorrect gap
setting, electrodes fouled.
3. Distributor failure. Inspect cap for
cracks, carbon traces and condition of wire
terminals. Wipe clean of dirt and moisture.
Inspect rotor, breaker points, condenser
and wiring connections.
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