2
10
MAINTENANCE
Maintenance Schedule
After First 5 Hours
• Change Engine Oil
Every 8 Hours or Daily
• Check Engine Oil Level
• Clean Muffler, Rewind Starter Finger Guard, and Controls
Every 100 Hours or Annually
• Clean/Inspect Muffler and Spark Arrester
• Change 6:1 Gear Reduction Oil (If Equipped)
• Change Non Integrated 2:1 Gear Reduction Oil (If Equipped)
Every 200 Hours or Annually
• Change Engine Oil
• Clean Air Filter †
Every 600 Hours or 3 Years
• Replace Air Filter
Annually
• Clean/Gap/Replace Spark Plug
• Clean/Replace In-Tank Fuel Filter ‡
• Clean Carburetor Sediment Bowl and Fuel Filter ‡
• Clean Air Cooling System †
• Check/Adjust Valve Clearance ‡
† Clean more often in dusty conditions or when airborne debris is
present.
‡ Not required unless engine performance problems are noted.
Change Engine Oil/Check Engine Oil Level
1. Place engine on a flat, level surface.
2. Remove spark plug wire from spark plug terminal.
Secure spark plug wire to prevent unintentional
contact with spark plug terminal.
3. Remove all dirt and debris from around the dipstick
tube.
4. See Figure 2. Remove dipstick (
A
) and wipe with a
clean, lint free cloth.
NOTE:
Proceed to step 10 if only checking engine oil
level.
5. Remove oil drain plug(s) with sealing washer(s) (
B
)
at base of engine and drain oil into an approved
container.
6. Install oil drain plug(s) with sealing washer(s) and
tighten to
140-200 lb-in
(15.8-22.6 N-m).
7. Remove oil fill cap (
C
) from valve cover.
8. Slowly pour
18-20 ounces
(532-591 ml) of
the recommended type of oil into the valve
cover opening. See
Section 1 - Safety and
General Information, General Information, Oil
Recommendations.
DO NOT overfill.
2
9. Allow a few seconds to elapse to allow oil to drain to
the crankcase.
10. Slowly insert dipstick until it bottoms in the dipstick
tube.
NOTE:
The most accurate oil level readings are
obtained when the engine is cold.
11. Slowly remove dipstick.
12. Verify that oil level (
D
) is on the cross hatch pattern at
or near the high mark.
NOTE:
Observe oil level on both sides of the dipstick.
The lower level of the two readings is the correct oil
level measurement.
13. Add oil as necessary until oil level is correct.
14. Install dipstick into dipstick tube.
Not for
Reproduction
Summary of Contents for Vanguard 10V300
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