TOHATSU 40 Service Manual page 326

PT/T Component Troubleshooting
Use this section to troubleshoot problems internal to the PT/T unit.
Complete all Preliminary Service Checks before
troubleshooting problems internal to the PT/T unit.
Identify the symptom below which best describes the problem at
hand and follow the specified Service Checks in the order
indicated:
Symptoms
Unit does not move UP.
UP operation stops halfway.
Unit does not hold UP position
when motor stops.
UP operation is slow.
Unit does not move DOWN.
DOWN operation stops
halfway.
DOWN operation is slow.
Unit does not hold trim
position during or after
forward running.
Unit does not hold trim
position during reverse
running.
Service Check 1 - Manual Valve
Disassemble the manual valve and check for wear or damage to
applicable components:
• Valve end surface.
• O-rings and seal washers.
• Bottom surface of valve mounting hole.
3-/ 4-Cylinder
NOTE
40 / 50 PT/T
Upward Trim/Tilt Problems
1, 2, 3, 4, 8, 9, 11,
12, 14
3, 4, 9, 11, 12, 14
1, 6, 11, 14
1, 3, 4, 8, 9, 11,
12, 14
Downward Trim/Tilt Problems
2, 5, 8, 9, 14
8, 9, 14
1, 5, 8, 9, 14
Thrust-Related Trim/Tilt Problems
1, 4, 6, 8, 11, 12,
14
1, 5, 7, 8, 11, 13,
14
POWER TRIM/TILT
Service Checks
Old Style PT/T
1, 2, 3, 4, 8, 9, 10,
12, 14
3, 4, 9, 10, 11,
12, 14
1, 4, 6, 10, 12, 14
1, 3, 4, 8, 9, 10
12, 14
2, 5, 8, 9, 14
5, 8, 9, 14
1, 5, 8, 9, 14
1, 4, 6, 8, 10, 12,
14
1, 7, 8, 11, 13, 14
New Style PT/T
1, 2, 3, 5, 9, 10,
12, 14
5, 9, 10, 11, 12, 14
1, 9, 10, 12, 14
1, 3, 5, 9, 10,
12, 14
1, 3, 5, 9, 14
5, 9, 14
1, 3, 5, 9, 14
1, 9, 10, 12, 14
1, 9, 11, 13, 14
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