26
1
2
3
MD2010, MD2020
MD2030, MD2040
2
1
1
2
4
3
5
Drive belt. Adjusting and replacing
WARNING!
Always turn the engine off before
starting maintenance work.
IMPORTANT!
Tighten screw (
1
) to 50-60 Nm.
Check and adjust as necessary after operating the
engine when the belts are warm.
It should be possible to depress a belt at the correct
tension approx. 10 mm between the pulleys using
normal thumb pressure. To adjust slacken off the
screws (
1
and
2
) and if necessary also screw (
3
) on
2010, 2020. Tension the belt, adjust to the correct
tension and tighten the screws. Check the tension.
To replace the belt slacken off screws (
1
and
2
) and if
necessary screw (
3
) on the 2010 and 2020. Press the
generator in towards the cylinder block so that the belt
can be removed. Clean off the pulley grooves. Install
the new belt. Adjust as above. Check belt tension
again after a few hours’ operation.
Idling. Adjustment
For engine idling speed: Please refer to the Technical
Data chapter. A lower engine speed can cause the
engine to stall and a higher engine speeds can cause
extra stresses to the drive/reverse 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 the 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 or working on 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 the locknut. Repeat
step 1.
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