Troubleshooting - Ariens Classic LM 21 Manual

PROBLEM
Engine will not
start
Engine is
difficult to
restart
Cut is poor
Grass does
not disperse
evenly
Mower does
not bag
clippings
Wheel drive
does not
engage (Self-
Propelled
models)

TROUBLESHOOTING

PROBABLE CAUSE
1. Fuel tank empty or low.
2. Spark plug wire loose or off.
3. Engine/Blade control cable
detached, broken, or not
adjusted properly.
1. Mower clogged with grass.
1. Worn blade.
2. Too much grass is being
removed per cutting.
3. Grass is too wet.
4. Mowing speed is too fast.
1. Too much grass is being
removed per cutting.
2. Grass is too wet.
3. Mowing speed is too fast.
1. Grass bag is overfilled.
2. Mulching plug is installed.
1. Wheel drive control not
engaged.
2. Drive belt out of position.
3. Drive belt worn or damaged.
4. Rear wheels at different
cutting heights.
5. Idler spring detached.
6. Wheel drive control cable
detached or broken.
7. Friction disc not adjusted
properly or damaged.
8. Bearings damaged.
9. Debris in gear set.
CORRECTION
1. Check fuel level. Fill tank if
2. Check connection.
3. Check cable. Adjust, repair
1. Clear clippings from under
1. Check blade (see CHECK
2. Raise cutting height.
3. Allow grass to dry.
4. Mow slower.
1. Raise cutting height.
2. Allow grass to dry.
3. Mow slower.
1. Empty grass bag and do not
2. Remove mulching plug.
1. Engage wheel drive control.
2. Check drive belt. Adjust as
3. Replace belt (see CHECK
4. Adjust rear wheels to same
5. Attach idler spring to notch
6. Check wheel drive control
7. Contact your Dealer.
8. Contact your Dealer.
9. Contact your Dealer.
GB - 25
necessary.
or replace as necessary.
mower. (Allow the mower to
clear clippings before
shutting off engine.)
MOWER BLADE on
page 18).
allow it to overfill.
necessary (see CHECK
DRIVE BELT on page 19).
DRIVE BELT on page 19).
cutting height (see CUTTING
HEIGHT ADJUSTMENT on
page 11).
on idler arm. Contact your
Dealer.
cable. Adjust or replace as
needed. See CHECK
WHEEL DRIVE CONTROL
on page 18.