August 15, 1963
SUBJECT: OMC ACCESSORIES ENGINE CLEANER
OMC ACCESSORIES ENGINE CLEANER is an internal engine cleaner designed to clean
piston tops, ring grooves, and cylinder walls of engines that are moderately
coated with petroleum gum and varnish - without having to dismantle the powerhead.
The necessity for having a good internal engine
cleaner becomes evident when remembering that
under certain conditions it is possible for
pistons and cylinder walls to accumulate a
thin coating of petroleum gum or varnish. These
gum and varnish substances are rather sticky,
which, over a period of time and for no
apparent reason, result in excessive piston
drag and ring to piston seizure. The overall
result is sluggish engine performance as
evidenced by gradual R.P.M. loss. In extreme
cases, complete piston to bore seizure results,
particularly after periods of storage.
Therefore, when looking for a satisfactory
and time saving method to remove much of
this gum and varnish without having to tear
down the engine, OMC ACCESSORIES ENGINE
CLEANER is recommended. It should be noted,
however, that this is a CLEANER, not a pre-
ventative, and must be used in strict accord-
ance with the following procedure:
OMC ACCESSORIES ENGINE CLEANER
1. Run engine to normal operating temperature.
2. Remove spark plugs and set pistons so intake and exhaust ports are closed.
3. Tilt engine to horizontal position with spark plug holes up.
4. Cover top of pistons with OMC ACCESSORIES ENGINE CLEANER.
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5. Let stand in horizontal position for 30 minutes or longer (overnight in
extreme cases).
6. Turn engine over so spark plug openings face downward. Pull starter handle
several times so as to force fluid out thru spark plug openings.
7. Put engine in test tank, replace plugs (cleaned & regapped) and run engine
to normal operating temperature.
NOTE: Starting engine may be more difficult than normal because piston and
cylinder surfaces are wet with cleaner; particularly if the spark
plug electrodes are fouled or excessively coated with cleaner, carbon
and/or oil. To ease starting effort, clean and regap spark plugs
before starting engine.
8. Slowly run 2/3 of a pint can of ENGINE CLEANER through carburetor throat at
fast idle.
9. Increase speed and pour balance of cleaner in fast enough to stall engine.
10. Let stand for another 30 minutes or longer.
11. Start engine and run at advanced throttle for 5 minutes.
NOTE: For engines which are to be operated on a boat following the cleaning
operation, Step 11 completes the cleaning process. However, if engines
are to be placed in storage for ANY length of time, complete Step 12.
12. Fog engine thoroughly with OMC ACCESSORIES RUST PREVENTATIVE
CAUTION NOTE: Step 12 is extremely important to adequately protect
engines in storage and MUST NOT BE OMITTED after cleaning.
OMC ACCESSORIES ENGINE CLEANER is available in 1 pint and 1 gallon cans: Order
by part number as follows.
Part No. 171630 - case of twenty four 1 pint cans at $39.60 per case.
Part No. 171631 - case of four 1 gallon cans at $40.00 per case.
The 40% accessory discount applies to either purchase. Order only from your
Parts Distributor.
Suggested list price for the 1 pint can is $1.65 each, and for the 1 gallon can
is $10.00 each.
Sincerely,
JOHNSON MOTORS
Robert Compton
Administrative Assistant
RC:bk
NOTE: Post on your Miscellaneous index.
