Rpm Performance Test - TOHATSU 40 Service Manual

SECTION 4

RPM PERFORMANCE TEST

Engines are equipped with RPM limiting function. If
full throttle RPM values cannot be obtained, see
RPM Limitation Test in Section 7.
Do not perform RPM test if engine shows signs of
overheating.
Perform this test with correct test propeller installed and with the
engine in a test tank.
1. Operate engine up to normal operating temperature.
2. Stop engine and install tachometer.
1
3. Start and run engine at NEUTRAL idle and verify specified RPM
is obtained. If test tank conditions permit, run engine in forward
gear at trolling and full throttle speeds and check for correct RPM:
NEUTRAL
Model Idle
RPM
40D
500
40D2
50D2
60B
70B
60C
70C
80A
90A
115A2
120A2
140A2
4. If test results vary, refer to Troubleshooting in this section.
4-10
NOTE
CAUTION
Trolling
Speed
RPM
900 750
900 750
900 750
900 750
900 750
900 750
900 750
900 750
900 700
900 700
900 700
900 700
900 700
Full Throttle
Speed
RPM
4500 - 5500
5000 - 5700
5000 - 5700
5150 - 5850
4900 - 5600
4900 - 5600
5150 - 5850
5150 - 5850
5000 - 5500
5000 - 5500
5200 - 5700
5000 - 5500
5200 - 5700
T1170
3-/ 4-Cylinder