Rpm Performance Test - TOHATSU NB-1000 Service Manual

SECTION 4

RPM PERFORMANCE TEST

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
2. Stop engine and install tachometer.
3. Start and run engine at NEUTRAL idle and verify specified RPM
is obtained. lf test tank conditions permit, run engine in forward
gear at trolling and full throttle speeds and check for correct RPM:
NEUTRAL
Model
RPM
2.5 / 3.5 1300
5 1000
8 / 9.8
9.9 / 15 / 18
25 / 30 1050
40
4. lf test results vary, refer to Troubleshooting in this section.
4-10
CAUTION
Trolling
Idle Speed
RPM
1100
850
950 750
950 800
900
950 850
Full Throttle
Speed
RPM
3800 - 5200 / 4200 - 5300
4500 - 5500
4500 - 5500 / 5000 - 6000
4500 - 5300 / 5200 - 5800 / 5200 - 5800
5000 - 6000 / 5150 - 5850
5200 - 5800
T1170
1-/ 2-Cylinder