Massimo MSU 400, Owner'S Manual, Page: 160 / 179

Periodic Maintenance and Adjustment 8-59
1. Check the cooling fin of radiator for blocked by soil or dirt
2. Check the speed sensor of radiator for damage and
Check fan for failure
3. Check if antifreeze can meet the requirement stated in
the owner manual
6
Coolant boils.
4. Check the coolant loop for mixed with air
1. Check the battery ,which with low electricity may cause
the motor failure
2. Check the starting motor for damage
3. Check if the carburetor is in regular situation
4. Check if the ignition loop is in good condition
5. Check if the spark plug is fouled or burned
6. Check if the ignition signal is in good condition
7. Check if the air cleaner is blocked
8. Check if the oil circuit is smooth
7
Engine cannot start.
9. Check if the exhaust system is blocked