Periodic Maintenance Schedule - Onan NHC Operator's Manual

PERIODIC MAINTENANCE SCHEDULE
Follow a regular schedule of inspection and servicing,
based on operating hours (see Periodic Maintenance
Schedule). Keep an accurate logbook of maintenance,
servicing, and operating time. Use the factory recom¬
mended Periodic Maintenance Schedule (based on
favorable operating conditions) to serve as a guide to
get long and efficient engine life. Regular service
periods are recommended for normal service and
operating conditions. For continuous duty, extreme
temperature, etc., service more frequently. For in¬
frequent use, light duty, etc., service periods can be
lengthened accordingly. Neglecting routine main¬
tenance can result in engine failure or permanent
damage.
For any abnormalities in operation, unusual noises
from the engine or accessories, loss of power,
overheating, etc., contact your nearest Onan Service
Center.
PERIODIC MAINTENANCE SCHEDULE
SERVICE THESE ITEMS
AFTER EACH CYCLE OF INDICATED HOURS
8
25 50 100 200
Inspect Engine Generally
X1
Check Oil Level X
Service Air Cleaner X2
Change Crankcase Oil X3 X2
Check Battery Electrolyte Level X
Clean Cooling Fins
X2
Replace Oil Filter X3
X2
Check or Replace Spark Plugs
X
Check Breaker Points
X
Replace Points and Condenser
X
Clean Breather Valve
X2
Replace Air Cleaner Element
X2
Check Valve Clearance
X3 X4
Compression Check
X4
Clean Carbon and Lead Deposits (Cylinder Head)
X4-5
X' - Check for fuel leaks. With engine running, visually and audibly check exhaust system for leaks.
X2 - Perform more often when running under severe operating conditions.
X3 - Initial break-in check only.
X4 - For detailed maintenance, contact an Onan Service Center or refer to the 940-0751 SERVICE MANUAL.
Xs - For engines running on unleaded fuel this interval may be extended to 400 hours.
AWARNING
Inhalation of exhaust gases can
result In serious personal injury or
death. Do NOT use the air cleaner or exhaust elbow
as a supporting step. Damage to these and connecting
parts might cause an exhaust leak.