Cub Cadet Challenger 700

Periodic Maintenance and Adjustment 8-63
Table5: Solution of Common Problems in Engine System
S/N
Problems
Solutions
1
Power or performance is
falling.
1. Check and clean the core of air cleaner.
2. Check muffler for partial blockage and clean spark arrestor.
2
Popping noise in engine.
1. Check air cleaner and emission lines for leaks.
2. Check the connection joint of exhaust pipe with engine or
muffler for leaks.
3. Check the grade of gasoline to see if it’s too low.
3
Engine is difficult to start
at low temperatures.
1. Check if the battery voltage goes down when the
temperature goes down.
2. If the temperature is under -18℃, place the vehicle in
warmer place for starting.
4
Coolant boils.
1. Check cooling fan of radiator for blockage by soil or dirt.
2. Check the speed sensor of radiator for damage and check
the fan for failure.
3. Check if antifreeze meets the requirements stated in the
owners manual
5
Engine cannot start.
1. Check the battery. A low battery can cause motor not to
start or run poorly
2. Check the starting motor for damage.
3. Check if the spark plug is fouled or burned.
4. Check if the air cleaner is blocked.