Onan CCKB Engine

                             PERIODIC SERVICE GUIDE

    Regularly scheduled maintenance is the key to lower operating costs and
longer service life for the unit. The following schedule can be used as a
guide. However, actual operating conditions under which a unit is run should be
the determining factor in establishing a maintenance schedule. When operating
in very dusty or dirty conditions, some of the service periods may have to be
reduced. Check the condition of the crankcase oil, the filters, cooling fins,
etc., frequently until the proper service time periods can be established.

    For any abnormalities in operation, unusual noises from engine or
accessories, loss of power, overheating, etc., contact your nearest Onan
Service Center.

PERIODIC MAINTENANCE SCHEDULE

                                    AFTER EACH CYCLE OF INDICATED HOURS
    SERVICE THESE ITEMS                8     25    50     100   200

Inspect Engine Generally               x-1
Check Oil Level                        x
Service Air Cleaner                           x-2
Change Crankcase Oil                          x-3   x-5    x-2
Check Battery Electrolyte Level                     x
Clean Cooling Fins                                  x
Replace Oil Filter (if used)                  x-3          x-2
Replace Spark Plugs                                        x
Check Breaker Points                                       x
Clean Breather Valve                                             x-2
Replace Air Cleaner Element                                      x-2
Check Valve Clearance                               x-3
Compression Check                                   x-3          x
Remove Carbon and Lead Deposits                                  x-4

x-1 - With engine running, visually and audibly check exhaust system For leaks.
x-2 - Perform more often in extremely dusty conditions.
x-3 - Initial break-in check only.
x-4 - For detailed maintenance, contact an Onan Service Center.
x-5 - Engines without oil filter.

    FOR MAJOR SERVICE AND OVERHAUL CONTACT YOUR NEAREST ONAN SERVICE CENTER.