Husqvarna SMB 70, SMB 70 E manual Band Wheel Adjustment, Drive Belt FIG

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MAINTENANCE

Band Wheel Adjustment

After the one-man saw has been used for a long period, the band wheel bearings will start to wear and change position. Meanwhile, the foundation’s working geometry will have stabili- sed. This means the parallelism of the band wheels may need to be adjusted.

Adjustment is performed as follows:

1.Ensure that the electric power has been disconnected. Unplug the electrical contact or short-circuit the petrol engine.

2.Loosen the belt tension by releasing the idler to the V-belt, so that the band wheel is free and can be rotated by hand.

3.The bandsaw blade should be fitted and adjusted.

4.Adjust the right-hand band wheel using the screw (F). The screw is locked with a lock nut, which should be loosened during adjustment.

5.Check the alignment of the bandsaw blade after adjustment by rotating the band wheel by hand.

6.See FIG. 61 for the correct position.

7.If the bandsaw blade is not aligned, adjust the right band wheel with the spacer located on the outside of the band wheel. The wheel is dismantled and the spacer is placed on the innermost part of the wheel axle and the wheel is then re-mounted. Repeat steps 2 to 5 until the bandsaw blade is aligned.

Drive Belt (FIG. 63)

The drive belt wears as the saw is used. The belt should be replaced after 200 hours of operation to avoid belt failure during operation. If the drive slips or the belts need to be frequently adjusted, this is a sign that the belts need to be replaced. To replace the belt, proceed as follows:

1.Unplug the electrical contact from the distri- bution box or short-circuit the petrol engine.

2.Loosen the belt guard.

3.Loosen the idler (A) completely with the locking lever (B).

4.Change the belt and then tighten the belt by pulling the handle (C) and tightening the idler

(A)and locking the idler with the locking lever

(B).When the belt is correctly tensioned, it should be possible to move it about 0.5 cm in each direction using one finger.

5.Attach the belt guard.

FIG. 61

FIG. 62

FIG. 63

English – 33

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Contents SMB SMB 70 E Table of Contents Introduction IntroductionSymbols KEY to SymbolsSafety Regulations Safety RegulationsPersonal Protective Equipment Fuel Safety One-man Sawmill Safety EquipmentSafety During Use PersonnelOne-man Sawmill Petrol Engine DescriptionTools and operator’s manual One-man Sawmill Electric Motor Description Height Setting FIG Carriage FIGFrame and FIG Handlebars FIG Cleaning Tank FIGBand Wheels FIG Bandsaw and Band Guide FIGRails Height Adjustment BLog Bolsters a Folding Stops CAdjustable Support Feet Rail StopRail Guard Safety Devices Installation InstallationInstallation Site UnpackingSetting up the Saw Carriage Saw CarriageAssembling the Saw Carriage Saw Carriage Adjustment Band Cleaning Tank FIG Propulsion Wire adjustmentPetrol Engine Electric MotorBandsaw Blade Scale FIG Fuel Fuel HandlingPetrol FuellingStarting a Cold Petrol Engine Starting and StoppingStopping a Petrol Engine Starting a Warm Petrol EngineStarting the Electric Sawmill Starting the Electric MotorStopping the Electric Motor Securing the Log USESawing Calculating the YieldStarting the Petrol Engine Edging Dismantling MaintenanceMaintenance Maintenance Drive Belt FIG Band Wheel AdjustmentChecking the Braking Function Saw Unit’s Height AdjustmentDaily Maintenance MaintenancePetrol Engine Technical DataNoise Levels EC Declaration of Conformity Only applies to Europe38 ´z+H66¶6R¨ English ´z+H66¶6R¨
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