Troubleshooting - MTD 520 Series Operator's Manual

NOTE: Make certain that the drive belt is
seated correctly and that it is riding smoothly
on the spindle sheaves and is not pinched
between them. Repeat Steps 1-3 to adjust if
the belt is pinched.
WARNING! Never operate the edger
without the spindle sheaves belt guard in
place.

Troubleshooting

Problem
Engine fails to start
Engine runs erratic
Engine overheats
Occasional skips
(hesitates) at high speed
Idles poorly
Excessive vibration
Drive-belt slips
Off-Season Storage
Observe the following when preparing the edger for
long-term storage:
1. Clean and lubricate the edger thoroughly as
instructed on page 8 in the Maintenance
section.
2. Refer to the Engine Operator's Manual for
engine manufacturers's storage instructions.
3. Coat the edger blade with chassis grease to
prevent rusting and corrosion.
Cause
1. Dirty air cleaner.
2. Engine needs to be primed. (If Equipped)
3. Fuel tank empty.
4. Stale fuel in gasoline tank.
5. Spark plug wire disconnected.
6. Spark plug fouled.
7. Engine flooded.
1. Spark plug wire loose.
2. Stale fuel in gasoline tank.
3. Vent in gas cap plugged.
4. Water or dirt in fuel system.
5. Dirty air cleaner.
1. Engine oil level low.
2. Air flow restricted.
3. Dirty air cleaner.
1. Spark plug gap too close.
1. Spark plug fouled, faulty, or gap too wide.
2. Dirty air cleaner.
1. Edger blade bent or damaged.
2. Blade spindle bent or damaged.
1. Belt worn or stretched.
4. Store the edger in a dry, clean area. Do not
store next to any corrosive materials, such as
lawn fertilizer.
5. Coat the edger, especially any springs and
bearings with a light oil or silicone spray.
NOTE: When storing any type of power
equipment in an poorly ventilated or metal
storage shed, care should be taken to
rustproof the equipment.
Remedy
1. Refer to the Engine Operator's Manual.
2. Push primer bulb two or three times.
3. Fill tank with clean, fresh gasoline.
4. Drain gasoline and refill tank with clean, fresh gasoline.
5. Connect the spark plug wire to the spark plug.
6. Clean, adjust gap or replace spark plug.
7. Refer to the Engine Operator's Manual.
1. Connect and tighten spark plug wire.
2. Drain gasoline and refill tank with clean, fresh gasoline.
3. Clear vent of any debris.
4. Drain fuel tank. Refill with fresh fuel.
5. Refer to the Engine Operator's Manual.
1. Fill crankcase with proper oil.
2. Clean area around and on top of engine.
3. Refer to the Engine Operator's Manual.
1. Adjust gap. Refer to the Engine Operator's Manual for
gap specifications.
1. Reset gap or replace spark plug.
2. Refer to the Engine Operator's Manual.
1. Replace edger blade.
2. Contact an authorized service dealer.
1. Replace belt.
S
ection
4 — S 9
ervice