Mercury Marine Heavy Duty 899846001 - Manual (Page 47)

REPAIRS
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The repair kit which comes with the boat is a one part glue
operation and should be used for emergency minor repair. For a
permanent repair, a two part adhesive for PVC fabric should be
used. This two part adhesive and patching materials for PVC fabric
are available from Mercury Marine.
Small tears and punctures in the air chambers which are
1 cm (0.393 in.) or less, can be repaired in an emergency. Larger
areas, or if the patch will overlap a seam, should be patched by a
professional repair technician at an inflatable repair station.
Contact your local Mercury dealer for the nearest inflatable repair
station.
For the best results when gluing, the relative humidity should be
less than 60%, ambient air temperature should be between
18 °C to 25 °C (65 °F to 77 °F) and not in direct sunlight.
Cut out a patch large enough to overlap the damaged area by
38 mm (1.5 in.) on all sides. Center the patch over the damaged
area, and with a pencil trace the outline of the patch. Apply masking
tape around the perimeter of the outlined patch area to ensure a
tight and clean glue line.
Clean the patch area on the boat as well as the backside of the
patch with M.E.K. (methyl ethel ketone) patching solvent and
cleaner. Keep solvent off skin. After applying the solvent, you will
notice that the area will become tacky. This tackiness ensures
good glue adhesion.
ONE PART GLUE (EMERGENCY REPAIRS ONLY)
Follow the directions on the cement tube.
TWO PART ADHESIVE
Mix a batch of adhesive according to the mixing directions provided
with the two part adhesive. Keep adhesive off skin. When the
adhesive is fully mixed, it must sit for a short time to activate the
catalyst. Failure to do so will create poor fabric adhesion.