SECTION 4
4-10
1-/ 2-Cylinder
RPM PERFORMANCE TEST
CAUTION
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.
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:
4. lf test results vary, refer to Troubleshooting in this section.
Model
NEUTRAL
Idle
RPM
Trolling
Speed
RPM
Full Throttle
Speed
RPM
2.5 / 3.5 1300 1100 3800 - 5200 / 4200 - 5300
5 1000 850 4500 - 5500
8 / 9.8 950 750 4500 - 5500 / 5000 - 6000
9.9 / 15 / 18 950 800 4500 - 5300 / 5200 - 5800 / 5200 - 5800
25 / 30 1050 900 5000 - 6000 / 5150 - 5850
40 950 850 5200 - 5800
2
T1170
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