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MAINTENANCE
(con’t)
SCHMIDT BELT-TIGHTENING DEVICE
(FOR GAS UNITS ONLY)
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).
GASOLINE ENGINE RPM SETTINGS
Model Top RPM Idle RPM Pump RPM
4090 Series 2950 1900 1025
1040 & 2040 Series 2775 1900 1175
6590 Series 3150 1900 1125
8422 & 8230 Series 3000 1900 900
NOTE: Engine RPM’s (High – Low Settings) are factory set for maximum efficiency. Adjusting RPM’s above
factory specification will void the warranty.
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