Checking Belt Tension - GO-DEVIL Surface Drive Operation Manual And Installation Manual

CHECKING BELT TENSION

Checking Belt Tension on the Surface Drive does not require removal of the rear access
panels. An inspection hole on the side of the frame is provided to inspect and check
belt tension from outside of the frame.
Belt tension should be checked every 30-50 hours of run time as described below
and readjusted if necessary.
1. Locate the black hole plug on the side of the frame behind the engine.
2. Carefully slip a knife blade behind the plug flange and pry it out of the hole.
3. Use a flashlight to look inside the hole and locate the belt. When using the
tension tester, force must be applied to the belt by pushing the tester in the
center of the belt width. The inspection hole may or may not be centered on the
belt width.
4. Touch the tester against the center of the belt
width as shown to the right. To measure
deflection, slide the outer o-ring ¼" from the belt
housing. Use the inch scale on the tester to set
the o-ring.
5. Next, push the tester against the belt inward ¼"
until the o-ring touches the belt housing. Be sure
to use the inch scale and not the metric scale
on the tester.
6. Remove the tester from the hole and view the
sliding "O" ring location on the force scale. The
force applied to deflect the belt is indicated by
the location of the bottom of the "O" ring on the
force scale.
7. Repeat steps 4-6 several times or until you
achieve the same result for each measurement.
8. If the measured force falls below specs shown
below, re-tension the belt as described on the following page (15).
Standard 16" Transom Models
Force = 11-15 lbs.
Deflection = 1/4"
20" High Transom Models
Force = 9-13 lbs.
Deflection = 1/4"
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