(Supersedes LO 9-2805-259-12, 15 February 1990)
16 JANUARY 1992
ENGINE, GASOLINE, 20 HP,
MILITARY STANDARD MODELS
MODEL 4A084-2, NSN 2805-00-952-3926)
MODEL 4A084-3, NSN 2805-00-872-5972)
MODEL 4A084-4, NSN 2805-01-276-5947)
References: TM 9-2805-259-14, C9100-IL and FM 9-207
REPORTING OF ERRORS
You can improve this publication by calling attention to errors and by recommending improvements and
stating your reasons for the recommendations. Your letter or DA Form 2028, Recommended Changes to
Publications and Forms, should be mailed directly to Commander, US Army Troop Support Command,
ATTN: AMSTR-MMTS, 4300 Goodfellow Boulevard, St. Louis, MO 63120-1798. A reply will be furnished
directly to you.
This LO is for crew/operator(C) or organizational (O) maintenance. Lube intervals (on-condition or hard time) and task
hour times are based on normal hours of operation. Change the intetvals if your lubricants are contaminated or if you
are operating the equipment under adverse operating conditions. Lube more during constant use and less during
periods of low activity. Adequate preservation precautions must be taken during inactive periods. Use correct grade of
lubricant for seasonal temperature expected.
WARNING - Dry cleaning solvent PD-680 used to clean parts is potentially dangerous to personnel and property.
Avoid repeated and prolonged skin contact. Do not use near open flame or excessive heat. Flash point of solvent is
100F - 138F (38C - 60C).
Clean parts with dry cleaning solvent PD-680 and dry before lubricating.
Before you start your lube service.
a. Use wrong type/grade lubricant.
a. Clean parts before lubricating.
b. Use too much lubricant.
b. Use the lubrication order as your guide.
The 20 HP military standard gasoline engine is not enrolled in the Army Oil Analysis Program (AOAP) HARD TIME
DISTRIBUTION STATEMENT A - Approved for public release; distribution is unlimited.
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