Murray EV3850x4NA Instruction Book page 18

TROUBLE
Engine difficult to start
or
Engine runs erratically Engine runs erratically
or or
Engine will not run at full Engine will not run at full
speed
Engine smokes
excessively
Cutting blade will not
rotate rotate
Blade will not cut properly Blade will not cut properly
Excessive vibration
F–041105C
TROUBLE SHOOTING CHART
CAUSE
Stale fuel
Clogged fuel filter
Dirt in fuel tank or out of fuel
Carburetor out of adjustment
Fouled spark plug
Dirty air filter
Plugged air filter
Debris interfering with blade
Loose blade
Defective V–belt
Defective quill bearings
Damage or worn blade
Loose parts
18
CORRECTION
Drain fuel tank. Fill with fresh
fuel.
Replace fuel filter
Clean fuel tank.
See Carburetor Adjustment
section.
Clean and set spark plug
gap.
Replace air filter.
Replace air filter.
Clean debris from blade.
Tighten blade nut.
Replace V–belt.
Replace the quill assembly.
Reverse the blade or replace
the blade.
Stop engine immediately.
Tighten all fasteners. If
vibration continues, take the
unit to an Authorized Service
Center.