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MAINTENANCE
D-6 D-6
RANGER 9 RANGER 9
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TABLE D.2
ONAN ENGINE MAINTENANCE SCHEDULE
FREQUENCY MAINTENANCE REQUIRED
Daily or Before
Starting Engine • Fill fuel tank.
• Check oil level.
• Check air cleaner for dirty
2
, loose, or damaged parts.
• Check air intake and cooling areas, clean as necessary
2
.
Every 25 Hours • Service precleaner element
2
.
Every 50 Hours • Service air cleaner element
2
.
• Change oil
1
.
Every 100 Hours • Check spark plug condition and gap.
• Remove cooling shrouds and clean cooling areas
2
.
• Change oil filter.
Note 1: Change oil every 25 hours when operating under heavy load in high ambient temperatures.
Note 2: Clean more often under dusty conditions or when airborne debris is present.
TABLE D.3
ENGINE MAINTENANCE PARTS
Part Part Number - Onan
Oil Filter Onan 122-0645
FRAM PH3614
Fuel Filter Onan 149-2005
FRAM G1
Air Cleaner Element Onan 140-2628-01
FRAM CA140PL
Air Cleaner Precleaner Onan 140-1496
Spark Plugs Onan 167-0263
Champion
®
RS14YC
(.025” gap - .64 mm)