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MQ SP-3035 CONCRETE SAW — OPERATION AND PARTS MANUAL — REV. #3 (09/29/06) — PAGE 44
MQ SP-3035 CONCRETE SAW
Replacing the Jack Shaft Belt
WARNING
NEVER attempt to check or adjust the V-belt
tension with the engine running. Severe injury can
occur. Keep fingers, hands, hair, and clothing
away from all moving parts.
1. Remove the Belt Guards (see Figs. 26 & 29).
2. Loosen the Rotary Tensioner.
3. Remove the Spindle Belt (see above).
4. Remove and replace the Jack Shaft Belt.
5. Replace the Spindle Belt (see above).
6. Adjust the Rotary Tensioner.
Rotary Belt Tensioner
The Rotary Belt Tensioner system uses a 3/4”-headed bolt and either a 15/16” or 1” nut to set belt
tension. Adjust Tension Nut to apply tension to the belt. Ridges on the Tensioner Arm gauge the
amount of tension applied.
1. Loosen the Tensioner Lock Bolt Head.
2. Adjust the Tensioner Nut for proper belt tension. (This will be achieved at
approximately 1-1/2 ridges on the gauge.)
3. Tighten the Tensioner Lock Bolt Head.
Fig. 30 — Jack Shaft Belt and Rotary Belt Tensioner System
Tensioner Lock Bolt
Head
Jack Shaft Pulle
y
T
ensioner Pulley
Tensioner Base
The Tensioner Nut is
on opposite side