90-814676R1 DECEMBER 1996
POWERHEAD - 4-25
Cleaning and Inspection
Cylinder Block and Crankcase Cover
IMPORTANT: Crankcase cover and cylinder
block are a matched, line-bored assembly and
never should be mismatched by using a different
crankcase cover or cylinder block.
CAUTION
While honing and cleaning procedures are being
performed on cylinder block, all bleed system
components – hoses, fittings and check valve –
MUST BE REMOVED from cylinder block to pre-
vent damage from abrasive materials.
Cylinder Bore (Cleaning and
Inspection)
1. Inspect cylinder bores for scoring, scuffing or a
transfer of aluminum from piston to cylinder wall.
Scoring or scuffing, if NOT TOO SEVERE, can
normally be removed by honing. If a transfer of
aluminum has occurred, an acidic solution such
as “Tidy Bowl Cleaner” should be applied to the
areas of the cylinder bore where transfer of alu-
minum has occurred. After the acidic solution has
removed the transferred aluminum, thoroughly
flush the cylinder bore(s) to remove any remain-
ing acid. Cylinder walls may now be honed to re-
move any glaze and to aid in the seating of new
piston rings.
HONING PROCEDURE
a. When cylinders are to be honed, follow the
hone manufacturer’s recommendations for
use of the hone, cleaning and lubrication dur-
ing honing.
b. For best results, a continuous flow of honing
oil should be pumped into the work area. If
pumping oil is not practical, use an oil can.
Apply oil generously and frequently on both
stones and work.
CAUTION
When honing cylinder block, remove hone fre-
quently and check condition of cylinder walls.
DO NOT hone any more than absolutely neces-
sary, as hone can remove cylinder wall material
rapidly.
c. Localize stroking in the smallest diameter un-
til drill speed is constant throughout length of
bore. Maintain firm stone pressure against
cylinder wall to assure fast stock removal and
accurate results. Expand stones, as neces-
sary, to compensate for stock removal and
stone wear. Stroke at a rate of 30 complete
cycles per minute to produce best crosshatch
pattern. Use honing oil generously.
d. Thoroughly clean cylinder bores with hot wa-
ter 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, cylinder bore and bearings.
After cleaning, bores should be swabbed
several times with engine oil and a clean
cloth, then wiped with a clean, dry cloth. Cyl-
inders SHOULD NOT be cleaned with kero-
sene or gasoline. Clean remainder of cylinder
block to remove excess material spread dur-
ing honing operating.
2. Hone all cylinder walls JUST ENOUGH to de-
glaze walls.
3. Measure cylinder bore diameter (with an inside
micrometer) of each cylinder. Check for tapered,
out-of-round (“egg-shaped”) and oversized bore.
54704
a
a - Inside Micrometer
Summary of Contents for 30 JET 40 (4 CYL)
Page 5: ...1 50332 IMPORTANT INFORMATION GENERAL INFORMATION and SPECIFICATIONS ...
Page 25: ...A 2 54637 ELECTRICAL AND IGNITION IGNITION SYSTEM ...
Page 51: ...B 2 ELECTRICAL AND IGNITION BATTERY CHARGING SYSTEM and STARTING SYSTEM ...
Page 69: ...C 2 54663 ELECTRICAL AND IGNITION TIMING SYNCHRONIZING ADJUSTING ...
Page 76: ...D 2 23891 ELECTRICAL AND IGNITION WIRING ...
Page 96: ...3 FUEL SYSTEM AND CARBURETION ...
Page 128: ...4 54727 POWERHEAD ...
Page 179: ...A 5 54738 MID SECTION CLAMP SWIVEL BRACKET AND DRIVE SHAFT HOUSING ...
Page 188: ...B 5 50158 MID SECTION POWER TRIM DESIGN 1 ...
Page 193: ...51638 5B 4 MID SECTION 90 814676R1 DECEMBER 1996 Power Trim Flow Diagrams Design 1 ...
Page 194: ...51637 90 814676R1 DECEMBER 1996 MID SECTION 5B 5 Design 1 ...
Page 195: ...51639 5B 6 MID SECTION 90 814676R1 DECEMBER 1996 Design 1 ...
Page 196: ...51640 90 814676R1 DECEMBER 1996 MID SECTION 5B 7 Design 1 ...
Page 197: ...51641 5B 8 MID SECTION 90 814676R1 DECEMBER 1996 Design 1 ...
Page 198: ...51642 90 814676R1 DECEMBER 1996 MID SECTION 5B 9 Design 1 ...
Page 199: ...51643 5B 10 MID SECTION 90 814676R1 DECEMBER 1996 Design 1 ...
Page 228: ...C 5 50158 MID SECTION POWER TRIM DESIGN II ...
Page 233: ...51644 5C 4 MID SECTION 90 814676R1 DECEMBER 1996 Power Trim Flow Diagrams Design II ...
Page 234: ...51645 90 814676R1 DECEMBER 1996 MID SECTION 5C 5 Design II ...
Page 235: ...51646 5C 6 MID SECTION 90 814676R1 DECEMBER 1996 Design II ...
Page 236: ...51647 90 814676R1 DECEMBER 1996 MID SECTION 5C 7 Design II ...
Page 237: ...51648 5C 8 MID SECTION 90 814676R1 DECEMBER 1996 Design II ...
Page 238: ...51649 90 814676R1 DECEMBER 1996 MID SECTION 5C 9 Design II ...
Page 239: ...51650 5C 10 MID SECTION 90 814676R1 DECEMBER 1996 Design II ...
Page 268: ...D 5 51486 MID SECTION POWER TRIM DESIGN 3 ...
Page 298: ...E 5 55331 MID SECTION POWER TRIM DESIGN 4 ...
Page 345: ...F 5 MID SECTION MANUAL TILT SYSTEM DESIGN I II III ...
Page 349: ...90 814676R1 DECEMBER 1996 MID SECTION 5F 3 Manual Tilt Flow Diagrams Design 1 51651 ...
Page 350: ...5F 4 MID SECTION 90 814676R1 DECEMBER 1996 Design 1 51652 ...
Page 351: ...90 814676R1 DECEMBER 1996 MID SECTION 5F 5 Design 1 51653 ...
Page 352: ...5F 6 MID SECTION 90 814676R1 DECEMBER 1996 Design 1 51654 ...
Page 353: ...90 814676R1 DECEMBER 1996 MID SECTION 5F 7 Design 1 51655 ...
Page 354: ...5F 8 MID SECTION 90 814676R1 DECEMBER 1996 Manual Tilt Flow Diagrams Design 2 51656 ...
Page 355: ...90 814676R1 DECEMBER 1996 MID SECTION 5F 9 Design 2 51657 ...
Page 356: ...5F 10 MID SECTION 90 814676R1 DECEMBER 1996 Design 2 51658 ...
Page 357: ...90 814676R1 DECEMBER 1996 MID SECTION 5F 11 Design 2 51659 ...
Page 358: ...5F 12 MID SECTION 90 814676R1 DECEMBER 1996 Design 2 51660 ...
Page 359: ...90 814676R1 DECEMBER 1996 MID SECTION 5F 13 Manual Tilt Flow Diagrams Design 3 51661 ...
Page 360: ...5F 14 MID SECTION 90 814676R1 DECEMBER 1996 Design 3 51662 ...
Page 361: ...90 814676R1 DECEMBER 1996 MID SECTION 5F 15 Design 3 51663 ...
Page 362: ...5F 16 MID SECTION 90 814676R1 DECEMBER 1996 Design 3 51664 ...
Page 363: ...90 814676R1 DECEMBER 1996 MID SECTION 5F 17 Design 3 51665 ...
Page 383: ...G 5 MID SECTION MANUAL TILT SYSTEM DESIGN 4 ...
Page 420: ...A 6 50508 LOWER UNIT GEAR HOUSING ...
Page 450: ...JET DRIVE LOWER UNIT B 6 ...
Page 452: ...LOWER UNIT 6B 1 90 814676R1 DECEMBER 1996 Notes ...
Page 471: ...7 A 50331 OUTBOARD MOTOR INSTALLATION ATTACHMENTS OUTBOARD MOTOR INSTALLATION ATTACHMENTS ...
Page 496: ...B 7 50505 OUTBOARD MOTOR INSTALLATION ATTACHMENTS TILLER HANDLE AND CO PILOT ...
Page 510: ...C 7 54845 OUTBOARD MOTOR INSTALLATION ATTACHMENTS REWIND STARTER ...
Page 520: ...8 50444 OIL INJECTION SYSTEM ...
Page 523: ...50444 8 2 OIL INJECTION SYSTEM 90 814676R1 DECEMBER 1996 Oil Injection Flow System ...