Maintenance
Drive Belt Adjustment
Maintenance 25doc101703 3-9
3
3.10 Drive Belt Adjustment
WARNING! Do not for any reason adjust the engine drive
belts or belt support bracket with the engine running. Doing
so may result in serious injury.
See Table 3-2. Check the drive belt tension after the first 20 hours, and every 50 hours
thereafter. See the table below for drive belt tension specifications for your model sawmill.
1. Remove the two belt covers located underneath the engine.
2. Loosen the drive belt turnbuckle jam nuts. Turn the turnbuckle counterclockwise (as
viewed from the top) to tighten the belt, clockwise to loosen the belt.
See Figure 3-6.
3. After tensioning the drive belt, check throttle cable tension and adjust if necessary. The
throttle cable should be tensioned just enough so that the engine revs as soon as the
clutch/brake handle is engaged. The throttle linkage should NOT affect engine RPM while
the clutch/brake handle is disengaged. NOTE: A properly adjusted throttle will extend the
cable spring 1/4" to 3/8" (6.4 - 9.5 mm) when running and have a slight amount of slack in
the cable when idling. Always be sure to check the drive belt support after adjusting drive
belt tension.
Engine/Motor Belt Tension
G15 7/16” (11mm) deflection with 8 lbs. of deflection force
TABLE 3-2
FIG. 3-6
50
Turn turnbuckle
counterclockwise
to tighten
drive belts
Jam nut (2)
SM0055B
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