PAGE 20 — SP1G CONCRETE SAW • OPERATION MANUAL — REV. #3 (09/07/17)
INSPECTION
Figure 7. V-Belt Tension Check
4.
DO NOT
overtighten or undertighten the V-belt. Severe
damage can occur to the saw and engine crankshaft
if the belt is over-tensioned. A decrease of power to
the blade and poor performance will result if the belt
is under-tensioned (loose on pulleys).
V-belt Tightening
Figure 8. V-Belt Tension Adjustment
1. With V-belt guard removed, loosen the 4 engine
mounting hex screws (Figure 8).
2. Loosen the locking nut and jam nut on the V-belt tension
adjuster.
NOTICE
V-belt alignment must be rechecked after adjusting
belt tension.
ENGINE
MOUNTING
HEX SCREWS
JAM NUT
LOCKING NUT
ADJUSTING
HEX
SCREW
3. Tighten the adjusting hex screw while holding the
engine in place to maintain pulley alignment. A
screwdriver can be used as a lever at the rear belt
guard mounting boss to hold the back of the engine
while adjusting V-belt tension.
4. Retighten the locking nut and jam nut.
5. With V-belt held in proper alignment (engine parallel
with the frame), retighten the 4 engine mounting
hex screws. Verify that all hex screws are properly
tightened.
V-belt Removal and Replacement
If the V-belt becomes worn or damaged, replace it with
new one.
1. Remove the 3 hex screws holding the V-belt guard and
remove the guard.
2. Loosen the 4 engine mounting hex screws (Figure 8).
3. Loosen locking nut on the V-belt tension adjuster.
4. Loosen the tension on the V-belt by turning the tension
adjuster hex screw.
5. Push the engine forward to provide slack in the V-belt.
6. Remove the belt from the main engine pulley.
7. Remove the two arbor shaft hex screws allowing the
outside of the shaft to drop (Figure 9).
8. Remove the V-belt.
Figure 9. V-Belt Removal
9. Reinstall new V-belt.
10. Reinstall and tighten arbor shaft hex screws.
11. With V-belt held in proper alignment, retighten the 4
engine mounting hex screws. (Follow V-belt Tightening
procedure.)
12. Reinstall belt guard with 3 hex screws.
ARBOR SHAFT
HEX SCREW
ARBOR
SHAFT
