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To tighten belt tension, proceed as follows:
1. Loosen locknuts for engine hold-down bolts only until washers beneath
spin freely.
2. Rotate 1/2" adjusting bolt clockwise until desired tension is reached.
(See Figure 4).
3. Retighten locknuts to secure engine.
DRIVE PULLEYS
Drive pulleys must be properly aligned and drive
belt tension set to specification. Improper pulley
alignment and belt tension can cause motor overloading,
excessive vibration and premature belt and/or bearing
failure. (See Figure 5).
Model
4090 Series
1040 & 2040 Series
6590 Series
8422 & 8230 Series
NOTE: Engine RPM's (High – Low Settings) are factory set for maximum efficiency. Adjusting RPM's above
factory specification will void the warranty.
MAINTENANCE
(con't)
SCHMIDT BELT-TIGHTENING DEVICE
(FOR GAS UNITS ONLY)
GASOLINE ENGINE RPM SETTINGS
Top RPM
2950
2775
3150
3000
- 12 -
Idle RPM
1900
1900
1900
1900
Pump RPM
1025
1175
1125
900
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