Mariner Mercury 105/140 JET, Руководство по обслуживанию

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4A-26 - POWERHEAD 90-824052R3 JUNE 2002
d. Localize stroking in the smallest diameter
until drill speed is constant throughout length
of bore. Expand stones, as necessary, to
compensate for stock removal and stone
wear. Stroke at a rate of 30 complete cycles
per minute to produce best cross-hatch
pattern. Use honing oil generously.
e. Thoroughly clean cylinder bores with hot
water and detergent. Scrub well with a stiff
bristle brush and rinse thoroughly with hot
water. A good cleaning is essential. If any of
the abrasive material is allowed to remain in
the cylinder bore, it will cause rapid wear of
new piston rings and cylinder bore in addition
to bearings. After cleaning, bores should be
swabbed several times with engine oil and a
clean cloth, then wiped with a clean, dry cloth.
Cylinders should not be cleaned with
kerosene or gasoline. Clean remainder of
cylinder block to remove excess material
spread during honing operation.
2. Hone all cylinder walls just enough to de-glaze
walls.
3. Measure cylinder bore diameter (with a snap
gauge micrometer) of each cylinder, as shown
below. Check for tapered, out-of-round (egg-
shaped) and oversize bore.
51846
135 and 150 (carbureted) Models
Models Cylinder Block
Finish Hone
135 and 150 with a Stan-
dard Piston 3.125 in.
(79.375mm)
135 and 150 with a .015 in.
(0.381mm) Oversize Piston 3.140 in.
(79.756mm)
135 and 150 with a .030 in.
(0.762mm) Oversize Piston 3.155 in.
(80.137mm)
175, XR6, Magnum III, 150 EFI and 200 Models
Models Cylinder Block
Finish Hone
175, XR6, Mag. III, 150 EFI
and 200 with a Standard
Piston
3.501 in.
(88.93mm)
175, XR6, Mag. III, 150 EFI
and 200 with a .015 in.
(0.381mm) Oversize Piston
3.516 in.
(89.31mm)
4. If a cylinder bore is tapered, out-of-round or worn
more than .003 in. (0.076 mm) from standard
“Cylinder Block Finish Hone” diameter (refer to
chart, preceding), it will be necessary to re-bore
that cylinder(s) to .015 in. (0.381mm) or .030 in.
(0.762mm) oversize or re-sleeve and install
oversize piston(s) and piston rings during reas-
sembly.
NOTE: The weight of an oversize piston is approxi-
mately the same as a standard size piston; therefore,
it is not necessary to re-bore all cylinders in a block
just because one cylinder requires re-boring.
5. After honing and thoroughly cleaning cylinder
bores, apply light oil to cylinder walls to prevent
rusting.