Download Print this page

Cub Cadet 979 Operator's Manual page 16

21" self-propelled mower
Hide thumbs Also See for 979:

Advertisement

Refer to engine manual for correct engine storage
instructions.
Coat mower's cutting blade with chassis grease to
prevent rusting.
Store mower in a dry, clean area. Do not store next
to corrosive materials, such as fertilizer.
NOTE: When storing any type of power equipment in a
poorly ventilated or metal storage shed, care should be
taken to rust-proof the equipment.
Using a light oil or
silicone, coat the equipment, especially cables and all
moving parts.
SECTION8: TROUBLESHOOTING
Problem
Cause
Engine fails to start
1.
Blade control handle disengaged.
1.
2.
Spark plug wire disconnected.
2.
3.
Fuel tank empty or stale fuel.
3.
4.
Blocked fuel line.
4.
5.
Faulty spark plug.
5.
6.
Engine flooded
6.
Engine runs erratic
1.
Spark plug wire loose.
1.
2.
Blocked fuel line or stale fuel.
2.
3.
Vent in gas plugged.
4.
Water or dirt in fuel system.
5.
Dirty air cleaner.
6.
Carburetor out of adjustment.
1.
Engine oil level tow.
2.
Air flow restricted.
3.
Carburetor not adjusted properly.
1.
Spark plug gap too close.
3.
4.
5.
6.
1.
2.
3.
1.
Remedy
Engage blade control handle.
Connect wire to spark plug.
Fill tank with clean, fresh gasoline.
Clean fuel line.
Clean, adjust gap, or replace.
Wait a few minutes to start engine.
Connect and tighten spark plug wire.
Clean fuel line; fill tank with clean, fresh
gasoline
Clear vent.
Drain fuel tank. Refill with fresh fuel.
Clean air cleaner.
Adjust carburetor.
Fill crankcase with proper oil.
Remove blower housing and clean.
Adjust carburetor.
Adjust gap to .030".
Engine overheats
Occasional skip (hesitates
at high speed
Idles poorly
1.
Spark plug fouled, faulty or gap too
1.
Reset gap to .030" or replace spark
wide.
plug.
2.
Carburetor improperly adjusted.
2.
Adjust carburetor.
3.
Dirty air cleaner.
3.
Clean air cleaner.
Excessive vibration
1.
Cutting blade loose or unbalanced.
1.
Tighten blade and adapter. Balance
blade.
2.
Bent cutting blade.
2.
Replace blade.
Mower wilt not mulch gras,_ 1.
Wet grass.
1.
Do not mow when grass is wet; wait
until later to cut.
2.
Excessively high grass.
2.
Mow once at a high cutting height, then
mow again at desired height or make a
narrower cutting path.
3.
Dull blade.
3.
Sharpen or replace blade.
Uneven cut
1.
Wheels not positioned correctly.
1.
Place all four wheels in same height
position.
2.
Dull blade.
2.
Sharpen or replace blade.
Wheels will not propel
1.
Belt not installed properly.
1.
Check belt for proper pulley installation
and movement.
2.
Debris clogging drive operation.
2.
Clean out debris with engine off.
NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.
16

Advertisement

loading