24
Maintenance
This chapter describes how to carry out the above maintenance. Read the instructions carefully before starting
work. Maintenance intervals are contained in the chapter above. Maintenance schedule
WARNING! Read the safety precautions for maintenance and service in the chapter: Safety Precautions,
before starting work.
WARNING! Unless otherwise specified all maintenance and service must be carried out with the engine
stopped. Stop the engine before the engine compartment cover is opened or removed. Immobilize the en-
gine by removing the ignition key, turning off the power supply with the main switch and locking it in the
OFF position.
Engine, general
Air Cleaner (ACL)*. Cleaning
Remove air cleaner (ACL). Carefully blow clean using
compressed air. Take care that no contaminants enter
the engine.
* Applies to the 2040 and later versions of the 2020 and 2030.
Idling. Adjustment
Idling speed should be 850 ± 25 rpm. A lower idling
speed can cause the engine to stall and a higher
speed increases the stresses on the drive/reverse
gear when shifting.
Adjust with the engine at operating temperature as
follows:
1* Set the control lever in the neutral position. Check
that gap (1) is approx. 3 mm. Adjustment: Slacken
off the locknut (2) and adjust until the correct gap
is obtained with screw (3). Tighten locknut.
* This point does not apply to boats with double control
positions.
2 Start engine and allow to idle with gear selector in
neutral.
WARNING! Approaching a running engine is
dangerous. Watch out for rotating components
and hot surfaces.
3 Slacken off locknut (4). Adjust engine speed with
adjustment screw (5). Tighten locknut. Repeat
step 1.
1
2
4
3
5
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